函数调用逻辑
广告过滤内部调用逻辑，涉及到多个函数多个参数：
disable_ads_filter_logic
disable_ads_filter_logic.coffee
禁用广告过滤时，多次调试
目前的发现的逻辑是：
---
【1】即使是 oad 的 initplayback ，正常返回response，也会返回错误
(1) case 1:
请求：
NSURLRequest requestWithURL:cachePolicy:timeoutInterval
URL=https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=be5e83dddc65db9b&initcwndbps=1127500&mt=1657589100&ack=1&cpn=j3M40XDCGhcG1Jgj&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
cachePolicy=0
timeoutInterval=60.000000
响应：
NSHTTPURLResponse initWithURL:statusCode:HTTPVersion:headerFields:
url=https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=be5e83dddc65db9b&initcwndbps=1127500&mt=1657589100&ack=1&cpn=j3M40XDCGhcG1Jgj&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
statusCode=200
HTTPVersion=(null)
headerFields={
"alt-svc" = "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"";
"cache-control" = "public, max-age=86400";
"client-protocol" = quic;
"content-type" = "application/vnd.yt-ump";
"cross-origin-resource-policy" = "cross-origin";
date = "Tue, 12 Jul 2022 01:52:01 GMT";
expires = "Wed, 13 Jul 2022 01:52:01 GMT";
server = "gvs 1.0";
vary = Origin;
"x-content-type-options" = nosniff;
}
但还是会报错：
NSError errorWithDomain:code:userInfo:
errDomain=com.google.ios.hamplayer
code=6000
userInfo={
HAMErrorDetails = "cronet=10|internal=-356|quic=85";
HAMErrorURLRequest = "<NSMutableURLRequest: 0x282833ae0>
{
URL: https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=be5e83dddc65db9b&initcwndbps=1127500&mt=1657589100&ack=1&cpn=j3M40XDCGhcG1Jgj&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
}";
HAMRequestNumberLoadTaskKey = 1;
}
以及：
NSError ml_mediaErrorWithCode:underlyingError:
arg1=708
underlyingError=
Error Domain=com.google.ios.hamplayer
Code=6000 "(null)"
UserInfo={
HAMErrorDetails=cronet=10|internal=-356|quic=85
HAMRequestNumberLoadTaskKey=1
HAMErrorURLRequest=<NSMutableURLRequest: 0x282833ae0>
{
URL: https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=be5e83dddc65db9b&initcwndbps=1127500&mt=1657589100&ack=1&cpn=j3M40XDCGhcG1Jgj&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140 }} -> mmewc=Error Domain=YTMediaError Code=708 "(null)" UserInfo={NSUnderlyingError=0x283bda940 {Error Domain=com.google.ios.hamplayer Code=6000 "(null)" UserInfo={HAMErrorDetails=cronet=10|internal=-356|quic=85, HAMRequestNumberLoadTaskKey=1, HAMErrorURLRequest=<NSMutableURLRequest: 0x282833ae0> { URL: https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=be5e83dddc65db9b&initcwndbps=1127500&mt=1657589100&ack=1&cpn=j3M40XDCGhcG1Jgj&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
}
}
(2) case 2:
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
URL=https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=38d955056e41c6f3&initcwndbps=1195000&mt=1657590782&ack=1&cpn=SKSZKIy7lZZ2pxor&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
cachePolicy=0
timeoutInterval=60.000000
响应：
NSHTTPURLResponse initWithURL:statusCode:HTTPVersion:headerFields:
url=https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=38d955056e41c6f3&initcwndbps=1195000&mt=1657590782&ack=1&cpn=SKSZKIy7lZZ2pxor&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
statusCode=200
HTTPVersion=(null)
headerFields={
"alt-svc" = "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"";
"cache-control" = "public, max-age=86400";
"client-protocol" = quic;
"content-type" = "application/vnd.yt-ump";
"cross-origin-resource-policy" = "cross-origin";
date = "Tue, 12 Jul 2022 02:00:07 GMT";
expires = "Wed, 13 Jul 2022 02:00:07 GMT";
server = "gvs 1.0";
vary = Origin;
"x-content-type-options" = nosniff;
}
也还是会报错：
NSError errorWithDomain:code:userInfo:
errDomain=com.google.ios.hamplayer
code=6000
userInfo={
HAMErrorDetails = "cronet=10|internal=-356|quic=85";
HAMErrorURLRequest = "<NSMutableURLRequest: 0x2828fc1b0> {
URL: https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=38d955056e41c6f3&initcwndbps=1195000&mt=1657590782&ack=1&cpn=SKSZKIy7lZZ2pxor&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
}";
HAMRequestNumberLoadTaskKey = 1;
}
以及：
NSError HAMErrorWithCode:userInfo:
reqUrl=https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=38d955056e41c6f3&initcwndbps=1195000&mt=1657590782&ack=1&cpn=SKSZKIy7lZZ2pxor&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
以及：
NSError ml_mediaErrorWithCode:underlyingError:
arg1=708
underlyingError=
Error Domain=com.google.ios.hamplayer
Code=6000 "(null)"
UserInfo={
HAMErrorDetails=cronet=10|internal=-356|quic=85
HAMRequestNumberLoadTaskKey=1
HAMErrorURLRequest=<NSMutableURLRequest: 0x2828fc1b0> {
URL: https://rr2---sn-phvo-jpqe.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&msp=1&odeak=1&odepv=1&osfc=1&id=38d955056e41c6f3&initcwndbps=1195000&mt=1657590782&ack=1&cpn=SKSZKIy7lZZ2pxor&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140
}
}
【2】即使是 ctier=L 的 videoplayback，在 前几次请求（rn=1、rn=2等）时，正常返回response，也会报错
(1) rn=1 的 ctier=L
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
URL=https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657613405&ei=_dfMYqC2IuGajQTGv7PYAw&ip=162.253.45.206&id=o-AIjeweHrLqp_Pz6Ozv20T5JprNQBR0HmN6o8txqvBehU&source=youtube&requiressl=yes&mh=GE&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnlk&ms=au,rdu&mv=m&mvi=2&pl=22&ctier=L&initcwndbps=1213750&svpuc=1&sabr=1&mt=1657591502&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgVsPJepnUO4V9FcfXV3OqVZtNkVp5xDAw-jIIOVaPqpUCID1hXsWyAMG-_A41aRCm2HF5eqtfDTt5IJs_ATne2Jfz&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgTJgONnp0_iio87Dj5f9DciH8TzxX_zPCs1clwp4poqACIDPhiXjWBAuAs9GAhBSD11lyHobe7EfWyHSV4Eoixwhh&cpn=aFN2DnMpoKgorDiB&rn=1
cachePolicy=0
timeoutInterval=60.000000
也还是会报错：
NSError errorWithDomain:code:userInfo:
reqUrl=https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657613405&ei=_dfMYqC2IuGajQTGv7PYAw&ip=162.253.45.206&id=o-AIjeweHrLqp_Pz6Ozv20T5JprNQBR0HmN6o8txqvBehU&source=youtube&requiressl=yes&mh=GE&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnlk&ms=au,rdu&mv=m&mvi=2&pl=22&ctier=L&initcwndbps=1213750&svpuc=1&sabr=1&mt=1657591502&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgVsPJepnUO4V9FcfXV3OqVZtNkVp5xDAw-jIIOVaPqpUCID1hXsWyAMG-_A41aRCm2HF5eqtfDTt5IJs_ATne2Jfz&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgTJgONnp0_iio87Dj5f9DciH8TzxX_zPCs1clwp4poqACIDPhiXjWBAuAs9GAhBSD11lyHobe7EfWyHSV4Eoixwhh&cpn=aFN2DnMpoKgorDiB&rn=1
以及：
NSError HAMErrorWithCode:userInfo:
reqUrl=https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657613405&ei=_dfMYqC2IuGajQTGv7PYAw&ip=162.253.45.206&id=o-AIjeweHrLqp_Pz6Ozv20T5JprNQBR0HmN6o8txqvBehU&source=youtube&requiressl=yes&mh=GE&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnlk&ms=au,rdu&mv=m&mvi=2&pl=22&ctier=L&initcwndbps=1213750&svpuc=1&sabr=1&mt=1657591502&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgVsPJepnUO4V9FcfXV3OqVZtNkVp5xDAw-jIIOVaPqpUCID1hXsWyAMG-_A41aRCm2HF5eqtfDTt5IJs_ATne2Jfz&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgTJgONnp0_iio87Dj5f9DciH8TzxX_zPCs1clwp4poqACIDPhiXjWBAuAs9GAhBSD11lyHobe7EfWyHSV4Eoixwhh&cpn=aFN2DnMpoKgorDiB&rn=1
(2) rn=2 的 ctier=L
正常响应，但也报错：
NSHTTPURLResponse initWithURL:statusCode:HTTPVersionLheaderFields:
url=https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657613405&ei=_dfMYqC2IuGajQTGv7PYAw&ip=162.253.45.206&id=o-AIjeweHrLqp_Pz6Ozv20T5JprNQBR0HmN6o8txqvBehU&source=youtube&requiressl=yes&mh=GE&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnlk&ms=au,rdu&mv=m&mvi=2&pl=22&ctier=L&initcwndbps=1213750&svpuc=1&sabr=1&mt=1657591502&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgVsPJepnUO4V9FcfXV3OqVZtNkVp5xDAw-jIIOVaPqpUCID1hXsWyAMG-_A41aRCm2HF5eqtfDTt5IJs_ATne2Jfz&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgTJgONnp0_iio87Dj5f9DciH8TzxX_zPCs1clwp4poqACIDPhiXjWBAuAs9GAhBSD11lyHobe7EfWyHSV4Eoixwhh&cpn=aFN2DnMpoKgorDiB&rn=2
statusCode=200
HTTPVersion=(null)
headerFields={
"alt-svc" = "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"";
"cache-control" = "private, max-age=21041";
"client-protocol" = quic;
"content-type" = "application/vnd.yt-ump";
"cross-origin-resource-policy" = "cross-origin";
date = "Tue, 12 Jul 2022 02:14:24 GMT";
expires = "Tue, 12 Jul 2022 02:14:24 GMT";
server = "gvs 1.0";
vary = Origin;
"x-content-type-options" = nosniff;
}
但也会报错：
NSError errorWithDomain:code:userInfo:
【3】当 rn=2 或 rn=3 时的 ctier=L 就正常了，不报错了，能正常返回数据了
(1) rn=3 的 ctier=L
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
URL=https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657613405&ei=_dfMYqC2IuGajQTGv7PYAw&ip=162.253.45.206&id=o-AIjeweHrLqp_Pz6Ozv20T5JprNQBR0HmN6o8txqvBehU&source=youtube&requiressl=yes&mh=GE&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnlk&ms=au,rdu&mv=m&mvi=2&pl=22&ctier=L&initcwndbps=1213750&svpuc=1&sabr=1&mt=1657591502&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgVsPJepnUO4V9FcfXV3OqVZtNkVp5xDAw-jIIOVaPqpUCID1hXsWyAMG-_A41aRCm2HF5eqtfDTt5IJs_ATne2Jfz&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgTJgONnp0_iio87Dj5f9DciH8TzxX_zPCs1clwp4poqACIDPhiXjWBAuAs9GAhBSD11lyHobe7EfWyHSV4Eoixwhh&cpn=aFN2DnMpoKgorDiB&rn=3
cachePolicy=0
timeoutInterval=60.000000
响应：
NSHTTPURLResponse initWithURL:statusCode:HTTPVersion:headerFields:
url=https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657613405&ei=_dfMYqC2IuGajQTGv7PYAw&ip=162.253.45.206&id=o-AIjeweHrLqp_Pz6Ozv20T5JprNQBR0HmN6o8txqvBehU&source=youtube&requiressl=yes&mh=GE&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnlk&ms=au,rdu&mv=m&mvi=2&pl=22&ctier=L&initcwndbps=1213750&svpuc=1&sabr=1&mt=1657591502&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgVsPJepnUO4V9FcfXV3OqVZtNkVp5xDAw-jIIOVaPqpUCID1hXsWyAMG-_A41aRCm2HF5eqtfDTt5IJs_ATne2Jfz&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgTJgONnp0_iio87Dj5f9DciH8TzxX_zPCs1clwp4poqACIDPhiXjWBAuAs9GAhBSD11lyHobe7EfWyHSV4Eoixwhh&cpn=aFN2DnMpoKgorDiB&rn=3
statusCode=200
HTTPVersion=(null)
headerFields={
"alt-svc" = "h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"";
"cache-control" = "private, max-age=20802";
"client-protocol" = quic;
"content-type" = "application/vnd.yt-ump";
"cross-origin-resource-policy" = "cross-origin";
date = "Tue, 12 Jul 2022 02:18:23 GMT";
expires = "Tue, 12 Jul 2022 02:18:23 GMT";
server = "gvs 1.0";
vary = Origin;
"x-content-type-options" = nosniff;
}
(2) rn=2 的 ctier=L，且能正常返回视频数据chunks
MLServerABRLoader dataLoadTask:didReceiveResponse:
arg1=<MLServerABRDataLoadTask: 0x285a0bb70>
didReceiveResponse=<NSHTTPURLResponse: 0x280dae440>
{
URL: https://rr1---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657615602&ei=kuDMYrOaBpHDigT5y4LYDw&ip=162.253.45.206&id=o-AMkZiBzQ6p7kCJW94A6DtyMGG3HfqwKg1KnZ-fNzwp2U&source=youtube&requiressl=yes&mh=Mk&mm=31,29&mn=sn-phvo-jpql,sn-vgqsknsk&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=22&ctier=L&initcwndbps=1266250&svpuc=1&sabr=1&mt=1657593666&fvip=4&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIgAqEYZlR2jQz3cDKbLMWJKMhZa_JyTS1vtd_9O64WLDkCIQDfL32Gx3XA9C4XUvNdiiXvM8TQjClSjAv2N0B2bt-flw%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRgIhAJ8F9p0MlD7yBXsonsAKJ95tApty4njmPKzuAFqoM81WAiEAlFcqzn3LXLCxMMe_WxKUJOd4L9uLrZ7oP_BtbspIFBY%3D&cpn=tuURUWDAKHN5FNX8&rn=2
}
{
Status Code: 200
Headers {
"Cache-Control" = (
"private, max-age=20896"
);
"Content-Type" = (
"application/vnd.yt-ump"
);
Date = (
"Tue, 12 Jul 2022 02:53:26 GMT"
);
Expires = (
"Tue, 12 Jul 2022 02:53:26 GMT"
);
Server = (
"gvs 1.0"
);
Vary = (
Origin
);
"alt-svc" = (
"h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\""
);
"client-protocol" = (
quic
);
"cross-origin-resource-policy" = (
"cross-origin"
);
"x-content-type-options" = (
nosniff
);
}
}
MLServerABRLoader dataLoadTask:didReceiveData:
arg1=<MLServerABRDataLoadTask: 0x285a0bb70>
didReceiveData={length = 65536, bytes = 0x235908d0 fa0610d0 fa0618e0 d4033a4b ... 4286a906 e50ad07b }
不过后续此处 rn=2 的 ctier=L 也报错了：
NSError errorWithDomain:code:userInfo:
https://rr1---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1657615602&ei=kuDMYrOaBpHDigT5y4LYDw&ip=162.253.45.206&id=o-AMkZiBzQ6p7kCJW94A6DtyMGG3HfqwKg1KnZ-fNzwp2U&source=youtube&requiressl=yes&mh=Mk&mm=31,29&mn=sn-phvo-jpql,sn-vgqsknsk&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=22&ctier=L&initcwndbps=1266250&svpuc=1&sabr=1&mt=1657593666&fvip=4&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIgAqEYZlR2jQz3cDKbLMWJKMhZa_JyTS1vtd_9O64WLDkCIQDfL32Gx3XA9C4XUvNdiiXvM8TQjClSjAv2N0B2bt-flw%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRgIhAJ8F9p0MlD7yBXsonsAKJ95tApty4njmPKzuAFqoM81WAiEAlFcqzn3LXLCxMMe_WxKUJOd4L9uLrZ7oP_BtbspIFBY%3D&cpn=tuURUWDAKHN5FNX8&rn=2
youtubeCallSequence
- 内部多个函数的调用过程：最初是从播放时间变成0开始分析，慢慢找到的函数调用逻辑
- 其中最核心的几个函数：
- 请求request
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:NSURLRequest initWithURL:cachePolicy:timeoutInterval:
- 响应response
NSHTTPURLResponse initWithURL:statusCode:HTTPVersion:headerFields:
- 其他
- Cronet
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]
- Cronet
- 请求request
- 其中最核心的几个函数：
全部内容详见：
youtubeCallSequence.coffee
最后更新: 20220823
================================================================================
【第一个广告视频ID的产生来源：googlevideo.com/initplayback】
--------------------------------------------------------------------------------
最早的 initplayback 的 request (的 http body 的 data )的来源：
YTPlaybackDataLoader onlinePromise
YTPlaybackDataLoader createPlaybackRequest
YTPlaybackRequestFactory playbackRequestForPlayerTransition:visibility:viewportSizeProvider:mediaStickySettings:prefetchContext:
YTPlaybackRequestFactory playbackRequestForNavigationEndpoint:autoplay:autonav:flungFromMDX:expiredForSeconds:visibility:viewportSizeProvider:mediaStickySettings:playerRequestDecorator:prefetchContext:latencyLogger:watchEndpointLoggingContext:
YTPlaybackRequest initWithProtoRequest:URLRequestProperties:CPN:QOEController:latencyLogger:
参数:
URLRequestProperties={
MLOnesieRequestContext = "<MLOnesieRequestContext: 0x28240cd80>";
inline = 1;
}
YTPlayerRequestFactory innerTubeRequestForPlayerWithVideoID:playlistID:playlistIndex:playbackContext:forOffline:clickTrackingParams:playerParams:
参数:
videoID=DpJ7BL6RdFM
playlistID=(null)
playlistIndex=0
playbackContext=<YTIPlaybackContext 0x282fbc480>: {
content_playback_context {
time_since_last_ad_seconds: 0
lact_milliseconds: 1834558
autoplays_since_last_ad: 0
conn: 3
vis: 5
fling: false
autoplay: true
adsense_client_params: "video_format=22&sdkv=i.17.08&output=xml_vast2"
autonav: true
}
}
forOffline=False
clickTrackingParams={length = 26, bytes = 0x08001084 67221308 95b584e3 95ddf902 ... d494091d 560607d6 }
playerParams=CkkIDxAGQhd3LU1FWTViSkRJUE5vOWtQaU1tdHlBa4oDKSADKAIwBzgFShMI1raF45Xd-QIVg-YoBR2IZAuZUgYIBT........TElUWV0mZ3Y9W0dPT0dMRV9WSUVXQUJJTElUWV0Y0A8YAfAEAfgEAQ%3D%3D
返回值:
<YTIPlayerRequest 0x2838233a0>: {
context {
client {
hl: "zh-CN"
gl: "CN"
device_make: "Apple"
device_model: "iPhone9,1"
client_name: IOS
client_version: "17.08.2"
os_name: "iOS"
os_version: "13.3.1.17D50"
raw_device_id: "FC1C0EA4-13EB-4B2E-AB49-32609F28DC8B"
screen_width_points: 375
screen_height_points: 667
screen_pixel_density: 2
client_form_factor: SMALL_FORM_FACTOR
window_width_points: 375
window_height_points: 667
connection_type: CONN_WIFI
config_info {
cold_config_data: "CMvakJgGENLcrQUQjPKtBRCl760FEMaFrQUQmNStBRCFta4FEKedrgUQgYauBRDXka0FEOK5rgUQx7GtBRCHqq4FEJOvrgUQhqGuBRCBxa0FEI6lrQUQkJmuBRCvs64FEOW4rgUQz4WuBRDxuq0FEIjprQUQj5SuBRDBvK4FEIy9rgUQxZquBRDtiq0FELytrgUQjZSuBRDqna0FEL22rgUQqM-oFxCcva4FEJyxrgUQy6KuBRD0x60FEIH4rQUQuIuuBRDUg64FEKmqrgUQnv2tBRCFka4FELTPqBcQibGuBRD3iK4FEOK8rgUQ0_GtBRDYvK4FEIG4rgUQpbCuBRCboK4FENm7rQUQ4a2uBRCX-60FEMWFrgUQt8utBRDrma0FEJaarQUQzeCtBRDr5K0FEPy6rgUQ6pesBRDX9a0FEO-3rgUaMkFDS0c1cG5XU0dZOFRhMFRnNkJ5VjlieWtLUGRUVmxQUkxCWHhkRktXclJ5XzVNNmxRIjJBQ0tHNXBuV1NHWThUYTBUZzZCeVY5YnlrS1BkVFZsUFJMQlh4ZEZLV3JSeV81TTZsUSoYQ0FNU0RBMERzTXlxQWhVRGdvdTVEQT09"
cold_hash_data: "CPnFk5gGEhQxMTU5NDYyMDIxMjM1NDQwNDMxOBjL2pCYBii0z6gXKOK8rgUoibGuBSj3iK4FKJugrgUogbiuBSilsK4FKNi8rgUo0_GtBSiB-K0FKMuirgUonLGuBSiFka4FKJ79rQUouIuuBSipqq4FKPTHrQUo1IOuBSj8uq4FKNf1rQUo77euBSjql6wFKJf7rQUo4a2uBSjZu60FKLfLrQUolpqtBSjr5K0FKMWFrgUo65mtBSjN4K0FKJOvrgUoh6quBSjXka0FKOK5rgUox7GtBSiOpa0FKK-zrgUokJmuBSiBxa0FKIahrgUo0tytBSinna4FKMaFrQUogYauBSil760FKIW1rgUojPKtBSjqna0FKI2UrgUovK2uBSi9tq4FKJjUrQUoxZquBSjtiq0FKKjPqBconL2uBSjxuq0FKIjprQUoj5SuBSjluK4FKIy9rgUoz4WuBSjBvK4FMjJBQ0tHNXBuV1NHWThUYTBUZzZCeVY5YnlrS1BkVFZsUFJMQlh4ZEZLV3JSeV81TTZsUToyQUNLRzVwbldTR1k4VGEwVGc2QnlWOWJ5a0tQZFRWbFBSTEJYeGRGS1dyUnlfNU02bFFCGENBTVNEQTBEc015cUFoVURnb3U1REE9PQ%3D%3D"
hot_hash_data: "CPnFk5gGEhQxNjEzNDg0MTcwMTQ4MTYyODk3Nxj5xZOYBijJ-f0SKPne_RIo1P_9EiiRvv0SKIPt_RIoy639Eijc4P0SKOK__RIo0979Eii7_v0SKILG_RIopdD9Eijizv0SKNLL_RIopqr9EiiFrP0SKKXv_RIonv_8EijI8f0SKL3K_RIope39EijU-f0SKIrg_RIo4az9EiibzP0SKNfM_RIomcb9EiiLqP0SKM7A_RIolOT8EiifgP4SKLn1_BIo89_9EijC_v0SKMvs_RIoytj9EiikxP0SKNGf_RIoyvD9EiiZ-f0SKML2_RIovL79EijGsv0SKNCy_RIo3JP9EiiqtP0SKOO4_RIo4Oz9Eiir1v0SKOPJ_RIo-Pn9EiiBgv0SKKbw_RIoqar9Eii93v0SKMTs_RIyMkFDS0c1cG5XU0dZOFRhMFRnNkJ5VjlieWtLUGRUVmxQUkxCWHhkRktXclJ5XzVNNmxROjJBQ0tHNXBuV1NHWThUYTBUZzZCeVY5YnlrS1BkVFZsUFJMQlh4ZEZLV3JSeV81TTZsUUIcQ0FNU0VRMEJvdGY2RlpzcEZRRGR6OElNbk13RQ%3D%3D"
}
screen_density_float: 2
utc_offset_minutes: 480
user_interface_theme: USER_INTERFACE_THEME_DARK
time_zone: "Asia/Shanghai"
eml_template_context: " \313\334\314\373\331\206\352\310\001 \206\327\321\205\205\213\346\323\361\001 \212\221\203\351\370\266\265\3168 \270\361\327\226\250\315\324\301) \221\307\376\333\240\306\304\357\370\001 \204\255\254\350\361\275\307\370\203\001 \365\360\247\340\223\316\264\322\016 \263\301\327\347\206\371\271\266. \320\301\200\233\321\362\214\245\027 \220\364\314\240\332\360\264\300\314\001 \270\365\242\255\321\241\372\326y \360\322\224\360\247\344\261\322\033 \310\335\301\224\261\262\275\372> \346\261\374\316\345\221\323\350\321\001 \217\375\340\345\313\225\361\264% \206\370\205\214\332\344\367\272\247\001 \343\237\335\242\271\344\250\261\023 \333\236\251\262\323\323\306\322\200\001 \201\311\332\214\371\363\217\252\267\001 \223\240\255\221\227\300\300\301\267\001 \332\271\246\252\206\257\225\273~ \214\327\321\232\303\213\204\363\251\001 \250\321\220\302\333\240\347\222\327\001 \307\306\342\230\345\316\241\330~ \233\311\261\225\335\357\225\226\030 \214\222\262\254\377\315\326\267\365\001 \207\251\305\212\325\337\205\206\345\001 \252\207\217\352\236\264\232\265r"
memory_total_kbytes: 2099249
notification_permission_info {
notifications_setting: NOTIFICATIONS_SETTING_ENABLED
last_device_opt_in_change_time_ago_sec: 5707596
}
client_store_info {
ios_store_country: "CHN"
}
}
user {
}
request {
}
click_tracking {
click_tracking_params: "\010\000\020\204g\"\023\010\225\265\204\343\225\335\371\002\025=\324\224\t\035V\006\007\326"
}
ad_signals_info {
params {
key: "ms"
value: "zNCgkMGJRpQCc6aMdpeOGv6ez_sOHNtGlWj7lg6EjWr7O7ZqIEwzYOOSsfzRnPhx3kY3I33makVsgrtFOzKammmPQqrf9Jq_eK18MyBdl-obQx_U8oanWw-_NlQf7l191piuk2G3xzWMnXXln426o9M5jcbqwVPf5Nf8opchuOQBNPYwEbDXj6uTpkZl47lPLlO0BZpF5xWpjI14zuD3co0YMnBQHEcZv3AKQlp0UEksZdiohp69QkO1ZoUPZrZrjty7kzuy6swSY7C5Baex2ZA11fj7Qkd_oxnqRxRlsMQuxaBF5CjfVUE5DMAQyxDg3aC3iCqE83h7TJTnSRhOIQ"
}
}
}
video_id: "DpJ7BL6RdFM"
playback_context {
content_playback_context {
time_since_last_ad_seconds: 0
lact_milliseconds: 1834558
autoplays_since_last_ad: 0
conn: 3
vis: 5
fling: false
autoplay: true
adsense_client_params: "video_format=22&sdkv=i.17.08&output=xml_vast2"
autonav: true
mdx_context { mdx_context {} }
}
}
racy_check_ok: false
for_offline: false
params: "CkkIDxAGQhd3LU1FWTViSkRJUE5vOWtQaU1tdHlBa4oDKSADKAIwBzgFShMI1raF45Xd-QIVg-YoBR2IZAuZUgYIBTABWAFoAXAJEpkaEpYaCAESkRoSDXByb21vdGVkVmlkZW9K_xkIARL6GSKpCwgTEp0LaHR0cHM6Ly93d3cuZ29vZ2xl ... ... tDTElDS19NU10mYWRfbXQ9W0FEX01UXSZhY3Z3PVtWSUVXQUJJTElUWV0mZ3Y9W0dPT0dMRV9WSUVXQUJJTElUWV0Y0A8YAfAEAfgEAQ%3D%3D"
cpn: "Fmq_1vPSmpZkjLS0"
override_muted_at_start: false
caption_params {
device_captions_on: false
}
video_quality_setting_params {
video_quality_setting_mobile_network: VIDEO_QUALITY_SETTING_UNKNOWN
video_quality_setting_wifi: VIDEO_QUALITY_SETTING_UNKNOWN
video_quality_last_written_ms: 0
}
}
YTIPlayerRequest init
GPBMessage
注：
GPBMessage ~= General Protocol Buffer Message
--------------------------------------------------------------------------------
调用 HAMDataLoadRequest 时 传入了 POST的application/x-protobuf的NSData：
Module_Framework`-[YTTimedAction startTimerWithFireDate:timeInterval:repeats:runLoopMode:]_block + 40
Module_Framework`-[YTTimedAction triggerAction] + 124
YouTube`-[YTInlineMutedPlaybackContainerController startPlaybackImmediately] + 324
YouTube`-[YTInlineMutedPlaybackWatchController loadVideoAndAttachView:] + 256
Module_Framework`-[YTPlayerViewController prepareToLoadWithPlayerTransition:expectedLayout:] + 276
Module_Framework`-[YTLocalPlaybackController prepareToLoadWithPlayerTransition:expectedLayout:] + 556
Module_Framework`-[YTPlaybackDataLoader startLoading] + 1060
Module_Framework`-[YTPlaybackDataLoader onlinePromise] + 332
Module_Framework`-[YTPlayerService makePlaybackRequest:responseBlock:errorBlock:] + 524
Module_Framework`-[YTPlayerServiceTask sendRequest] + 248
Module_Framework`-[YTInnerTubeRequestor makeInnerTubeRequest:withParser:completionBlock:retryEnabled:timeoutInterval:enableLatencyTicks:mutableSharedData:] + 28
Module_Framework`-[YTInnerTubeRequestor makeInnerTubeRequest:withParser:completionBlock:retryEnabled:timeoutInterval:enableLatencyTicks:mutableSharedData:nilIdentityIsSignedOut:] + 36
Module_Framework`-[YTBaseInnerTubeService makePOSTRequest:withParser:completionBlock:retryEnabled:timeoutInterval:enableLatencyTicks:mutableSharedData:nilIdentityIsSignedOut:] + 540
Module_Framework`-[YTBaseInnerTubeService performHTTPRequest:service:withIdentity:dataBlock:errorBlock:retryEnabled:nilIdentityIsSignedOut:] + 628
Module_Framework`-[YTVisitorDataRequestDecorator decorateRequest:withCompletionBlock:] + 260
sub_186AB30 = Module_Framework`___lldb_unnamed_symbol14785$$Module_Framework + 608
Module_Framework`-[YTBaseNetworkService performHTTPRequest:withAuthorizer:responseBlock:errorBlock:retryConfig:] + 184
Module_Framework`-[YTBaseNetworkService performHTTPRequest:withAuthorizer:backgroundCompletionBlock:retryConfig:] + 928
Module_Framework`-[MLOnesieUMPFetcherTask resume] + 208
Module_Framework`-[MLOnesieRequestFactory onesieRequestForPlayerRequest:authorization:dataLoader:context:cryptor:requestNumber:completionHandler:] + 432
Module_Framework`-[MLOnesieRequestFactory onesieRequestForPlayerRequest:authorization:dataLoader:context:cryptor:requestNumber:completionHandler:]_block + 64
Module_Framework`-[MLOnesieRequestFactory onesieRequestForPlayerRequest:dataLoader:context:cryptor:requestNumber:error:] + 5628
参数:
request=<NSMutableURLRequest: 0x282e83150> {
URL: "https://youtubei.googleapis.com/youtubei/v1/player?key=AIzaSyB-63vPrdThhKuerbB2N_l7Kwwcxj6yUAc&id=r17kWuxKXKs&t=DA5C7286-F10C-4EBC-942E-96B8CA551C57"
}
dataLoader=<HAMCronetDataLoader: 0x283c621f0>
context=<MLOnesieRequestContext: 0x2809ae3a0>
cryptor=<MLOnesiePlayerServiceCryptor: 0x283c68930>
requestNumber=1
error=0x16d760c08
HAMDataLoadRequest initWithRangedURL:timeoutInterval:HTTPMethod:HTTPContentType:HTTPBody:idempotent:
参数:
rangeUrl=<HAMRangedURL: 0x281963320>
URL = "https://rr1---sn-hp57kndr.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&rbqsm=fr&msp=1&odeak=1&odepv=1&osfc=1&id=fd97bcf151a359c8&initcwndbps=1645000&mt=1661156982&pxtags=Cg4KAnR4EggyNDE5NzI3NQ&rxtags=Cg4KAnR4EggyNDE5NzI3NQ,Cg4KAnR4EggyNDE5NzI3Ng,Cg4KAnR4EggyNDE5NzI3Nw&ack=1&cpn=AuykYLjoeyBPVKWO&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140"
timeoutInterval=60
HTTPMethod="POST"
HTTPContentType="application/x-protobuf"
HTTPBody=7647 bytes
idempotent=true
--------------------------------------------------------------------------------
googlevideo.com/initplayback 的调用顺序：
[case 1]
MLOnesieUMPFetcherTask onRequestFactoryCompletionWithRequest:error:
参数:
request=<HAMDataLoadRequest: 0x282027040>
_idempotent (BOOL): YES
_rangedURL (HAMRangedURL*): <HAMRangedURL: 0x283831120>
_timeoutInterval (double): 60
_HTTPMethod (NSString*): @"POST"
_HTTPContentType (NSString*): @"application/x-protobuf"
_HTTPBody (NSData*): <NSConcreteData: 0x283831140>
error=(null)
startRequestTask_104238C = -[MLOnesieUMPFetcherTask onRequestFactoryCompletionWithRequest:error:]_block + 64
-[HAMCronetDataLoader taskWithRequest:userInfo:] + 140
-[HAMDataLoadRequest buildURLRequest] + 140
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
参数:
URL="https://rr5---sn-p5qddn76.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&rbqsm=fr&msp=1&odeak=1&odepv=1&osfc=1&id=a52feece777301a2&initcwndbps=1786250&mt=1660899670&pxtags=Cg4KAnR4EggyNDE5NzI3NQ&rxtags=Cg4KAnR4EggyNDE5NzI3NQ,Cg4KAnR4EggyNDE5NzI3Ng,Cg4KAnR4EggyNDE5NzI3Nw&ack=1&cpn=Bu494mABvg3R6sCr&rn=1&opr=1&pvi=160,133,134,135,136,137,298,299,264&pai=139,140"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
[case 2]
callPrewarmConnection_10470B8
startTask_1048AA0 = ___lldb_unnamed_symbol12576$$Module_Framework + 72
-[HAMCronetDataLoader taskWithRequest:userInfo:] + 140
-[HAMDataLoadRequest buildURLRequest] + 380
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
参数:
URL="https://rr2---sn-p5qs7nsr.googlevideo.com/initplayback?source=youtube&orc=1&oeis=1&c=IOS&oss=1&oda=1&oad=5500&ovd=5500&oaad=11000&oavd=11000&ocs=700&oputc=1&oses=1&ofpcc=1&osbr=1&osnz=1&rbqsm=fr&msp=1&odeak=1&odepv=1&osfc=1&id=8bfb111f4c684ce5&initcwndbps=1683750&mt=1660916238&pxtags=Cg4KAnR4EggyNDE5NzI3NQ&rxtags=Cg4KAnR4EggyNDE5NzI3NQ,Cg4KAnR4EggyNDE5NzI3Ng,Cg4KAnR4EggyNDE5NzI3Nw&cpn=YCXS_oBo1TcIotC0&pai=0&pvi=0&owc=1"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
--------------------------------------------------------------------------------
MLServerABRLoader dataLoadTask:didReceiveData: 的后续response的data的parse解析过程
当 禁用广告过滤 正常加载广告时的流程：
(1) MLServerABRLoader -> HAMMP4InitializationChunk
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36
-[MLServerABRDataLoadTask dataLoadTask:didReceiveData:] + 292
MLServerABRLoader dataLoadTask:didReceiveData:
serverABRUMPParserParseResponseData_FE2F90 = ___lldb_unnamed_symbol12192$$Module_Framework + 136
parserParseData_32CAA84 = ___lldb_unnamed_symbol84370$$Module_Framework + 160
extractMediaHeaderBytes_32CAC60
callParseData_32CAE80 = ___lldb_unnamed_symbol84372$$Module_Framework + 52
sub_FE4C80 = ___lldb_unnamed_symbol12224$$Module_Framework
BaseUMPParser_parseData_FE37D4 = ___lldb_unnamed_symbol12209$$Module_Framework + 172
citer 的 videoplayback
for youtube::media::ServerABRUMPParser + 16 => checkMediaHeaderUmpBadPartid_107DD4C = ___lldb_unnamed_symbol12801$$Module_Framework
MLQOEError QOEErrorWithCode:details:
参数：
code=ump.badpartid
details={ partid = 0xA; }
其他情况，比如: 正常流程 或 oad 的 initplayback
for youtube::media::OnesieUMPParser + 504 => checkMediaHeaderUmpBadPartid_1046494 = ___lldb_unnamed_symbol12555$$Module_Framework
toCallProcessMediaHeader_FE2EB0 = ___lldb_unnamed_symbol12191$$Module_Framework + 108
validateMediaHeader_FE72BC = ___lldb_unnamed_symbol12318$$Module_Framework + 144
parseAndSaveChunk_107D850 = ___lldb_unnamed_symbol12797$$Module_Framework + 64
-[MLServerABRLoader chunkForMediaHeader:] + 324
-[MLMP4ChunkFactory initializationChunkWithURL:] + 72
HAMMP4InitializationChunk initWithFormat:rangedURL:preferTrackTimescale:
参数： case 1
arg1=0x0000000282ca6b80
arg2=0x000000028116c800
arg3=false
(2) MLOnesieUMPFetcherTask -> HAMMP4InitializationChunk
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36
-[MLOnesieUMPFetcherTask dataLoadTask:didReceiveData:] + 196
___lldb_unnamed_symbol12192$$Module_Framework + 136
___lldb_unnamed_symbol84370$$Module_Framework + 160
___lldb_unnamed_symbol84372$$Module_Framework + 52
___lldb_unnamed_symbol12209$$Module_Framework + 312
sub_1045904 = ___lldb_unnamed_symbol12549$$Module_Framework + 168
___lldb_unnamed_symbol12191$$Module_Framework + 108
processOnesieMediaHeader_10482D8 = ___lldb_unnamed_symbol12575$$Module_Framework + 1120
-[MLMP4ChunkFactory initializationChunkWithURL:] + 72
HAMMP4InitializationChunk initWithFormat:rangedURL:preferTrackTimescale:
(3) MLServerABRDataLoadTask -> HAMChunk
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36
-[MLServerABRDataLoadTask dataLoadTask:didReceiveData:] + 292
___lldb_unnamed_symbol12192$$Module_Framework + 136
___lldb_unnamed_symbol84370$$Module_Framework + 160
___lldb_unnamed_symbol84372$$Module_Framework + 52
___lldb_unnamed_symbol12209$$Module_Framework + 336
sub_107DAB0 = ___lldb_unnamed_symbol12800$$Module_Framework + 232
HAMChunk loadDidCompleteWithError:
(4) MLOnesieChunkLoadTask -> HAMChunk
-[MLOnesieChunkLoadTask initWithRange:chunks:dataBuffer:cache:delegate:queue:latencyLogger:]_block_block + 100
-[HAMBaseChunkLoadTask didReceiveData:error:] + 656
-[HAMBaseChunkLoadTask currentChunkDidComplete] + 256
-[HAMMediaChunk loadDidCompleteWithError:] + 48
HAMChunk loadDidCompleteWithError:
(5) -> MLServerABRLoader recordInvalidFormatQOEErrorWithFormatID:extraDetails:
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36
-[MLServerABRDataLoadTask dataLoadTask:didReceiveData:] + 292
___lldb_unnamed_symbol12192$$Module_Framework + 136
___lldb_unnamed_symbol84370$$Module_Framework + 160
___lldb_unnamed_symbol84372$$Module_Framework + 52
___lldb_unnamed_symbol12209$$Module_Framework + 624
chekAndCallProcessMediaHeader_FE43F4 = ___lldb_unnamed_symbol12214$$Module_Framework + 276
___lldb_unnamed_symbol12191$$Module_Framework + 108
void youtube::media::BaseUMPParser::AccumulateDataAndParseProto<video_streaming::FormatInitializationMetadata>(unsigned int, absl::string_view, video_streaming::UMPPartID, std::__1::function<void (video_streaming::FormatInitializationMetadata)>)::'lambda'(absl::string_view)::operator()(absl::string_view) const + 436
sub_FE61AC = ___lldb_unnamed_symbol12275$$Module_Framework + 160
callDidParseFormatInitializationMetadata_107E5FC = ___lldb_unnamed_symbol12805$$Module_Framework + 44
-[MLServerABRLoader didParseFormatInitializationMetadata:] + 268
MLServerABRLoader recordInvalidFormatQOEErrorWithFormatID:extraDetails:
参数:
formatID="140_1629449114196897"
extraDetails="init_metadata_badid"
相关函数:
[callParseData_32CAE80]
核心代码逻辑：
return (*(*curServerABRUMPParserOffset0x20Value + 0x30LL))();//
// call: sub_FE4C80 = ___lldb_unnamed_symbol12224:
// x0 = curServerABRUMPParserOffset0x20Value
// x1 = curServerABRUMPParserOffset0x40Ptr
// x2 = remainBufferSizePtr
// x3 = mediaHeaderBytesPtr
[sub_FE4C80]
核心逻辑：
return BaseUMPParser_parseData_FE37D4(*(_QWORD *)(a1 + 8), *a2, *a3, *a4);
[BaseUMPParser_parseData_FE37D4]
核心逻辑：
result = (*(__int64 (**)(void))(*(_QWORD *)result + 0x70LL))();
// 实际调试 = 出错流程？: checkMediaHeaderUmpBadPartid_107DD4C
[chekAndCallProcessMediaHeader_FE43F4]
核心逻辑：
toCallProcessMediaHeader_FE2EB0(v10, v9, v8, v7, (__int64)&v21);
[toCallProcessMediaHeader_FE2EB0]
核心逻辑：
result = (*(__int64 (**)(void))(*(_QWORD *)v9 + 0x30LL))();
// for MLServerABRDataLoadTask(MLServerABRLoader) is: validateMediaHeader_FE72BC
// for MLOnesieUMPFetcherTask is: processOnesieMediaHeader_10482D8
[validateMediaHeader_FE72BC]
核心逻辑：
(*(void (__fastcall **)(__int64, char *))(*(_QWORD *)v2 + 32LL))(v2, &v10); // = parseAndSaveChunk_107D850
[parseAndSaveChunk_107D850]
核心逻辑：
v7 = (struct objc_object *)objc_msgSend_3E84298(curMLServerABRLoader_, "chunkForMediaHeader:", mediaHeader);
[youtube::media::BaseUMPParser::AccumulateDataAndParseProto<video_streaming::FormatInitializationMetadata>(unsigned int,absl::string_view,video_streaming::UMPPartID,std::__1::function<void ()(video_streaming::FormatInitializationMetadata)>)::{lambda(absl::string_view)]
核心逻辑：
(*(void (**)(void))(*(_QWORD *)v20 + 0x30LL))(); // sub_FE61AC
[sub_FE61AC]
核心逻辑：
(*(void (**)(void))(**(_QWORD **)(v3 + 8) + 0x50LL))();// callDidParseFormatInitializationMetadata_107E5FC
================================================================================
ctier 重发请求 死循环的调用逻辑：
-[MLServerABRLoader continueLoading]
shouldSendRequest==True:
-[MLServerABRDataLoader createDataLoadTaskForRequest:] + 128
-[MLServerABRDataLoader dataLoadTaskForHTTPBody:isPrimaryHostProbing:] + 424
-[HAMCronetDataLoader taskWithRequest:userInfo:] + 140
-[HAMDataLoadRequest buildURLRequest] + 140
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
-[MLServerABRDataLoadTask startWithDelegate:delegateQueue:] + 88
HAMCronetDataLoadTask startWithDelegate:delegateQueue:
Cronet_UrlRequestCallback_OnResponseStarted_194CCE4 = ___lldb_unnamed_symbol15676$$Module_Framework
generateNewHttpResponse_194D6D8 = ___lldb_unnamed_symbol15681$$Module_Framework + 376 = sub_194D6D8
NSHTTPURLResponse initWithURL:statusCode:HTTPVersion:headerFields: -> 创建新的 ctier 的response
-[MLServerABRDataLoadTask dataLoadTask:didReceiveResponse:] + 424
-[MLServerABRLoader dataLoadTask:didReceiveResponse:] -> 当 ctier 报错时
NSError HAMErrorWithURLResponse:userInfo:request:
NSError HAMErrorWithCode:userInfo:
Cronet_UrlRequestCallback_OnSucceeded_194D248 = ___lldb_unnamed_symbol15678$$Module_Framework
MLServerABRDataLoadTask dataLoadTask:didCompleteWithError:
MLServerABRLoader dataLoadTask:didCompleteWithError:
MLServerABRLoader updateLoadRetryPolicyOnLoadCompletionWithError:
MLDefaultLoadRetryPolicy didCompleteLoadWithError:
error==NULL: MLDefaultLoadRetryPolicy cancelRetryAndResetBackoff:
retryID++
error!=NULL: MLDefaultLoadRetryPolicy scheduleRetryWithBlock:
canRetry==True: callExecuteRetryBlockWithRetryID_FF3070 = -[MLDefaultLoadRetryPolicy scheduleRetryWithBlock:]_block + 44
-[MLDefaultLoadRetryPolicy executeRetryBlockWithRetryID:] + 68
callMLServerABRLoaderContinueLoading_107B5A8
-[MLServerABRLoader continueLoading] + 924
-[MLServerABRDataLoadTask startWithDelegate:delegateQueue:] + 88
HAMCronetDataLoadTask startWithDelegate:delegateQueue: -> 进入 ctier 的死循环 重复请求
canRetry==False: callMLServerABRLoaderFailWithError_107B5B8
MLServerABRLoader failWithError:
================================================================================
相关函数详解：
MLServerABRLoader dataLoadTask:didCompleteWithError:
if ( curServerABRUMPParser )
parseResponseError_107E6B0(curServerABRUMPParser, inputError_1);
if ( !inputError_1
&& !curMLServerABRLoader->_didReceiveChunkForCurrentRequest
&& !curMLServerABRLoader->_didReceiveNextRequestPolicyForCurrentRequest )
{
defaultBackOffTimeMs = curMLServerABRLoader->_defaultBackOffTimeMs;
if ( defaultBackOffTimeMs >= 1 )
{
...
}
}
objc_msgSend_3E84298(curMLServerABRLoader, "updateLoadRetryPolicyOnLoadCompletionWithError:", inputError_3);
MLServerABRLoader updateLoadRetryPolicyOnLoadCompletionWithError:
参数：
case 1
arg1={
Error Domain=com.google.ios.hamplayer
Code=10000 "(null)"
UserInfo={
HAMRequestNumberLoadTaskKey=1,
HAMErrorURLRequest=<NSMutableURLRequest: 0x280ab2470> {
URL: https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=L&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=1
}
}
}
case 2:
arg1=domain: "com.google.ios.hamplayer" - code: 6009
case 3:
Error Domain=com.google.ios.hamplayer
Code=6009 "(null)"
UserInfo={
HAMErrorHTTPURLResponse=<NSHTTPURLResponse: 0x28095cd60> {
URL: https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=L&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2
}
{
Status Code: 302,
Headers {
Connection = close
Content-Length = 0
Location = "https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=A&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2"
Server = "atomos-tproxy 1.0"
}
},
HAMRequestNumberLoadTaskKey=2,
HAMErrorURLRequest=<NSMutableURLRequest: 0x280ab1f50> {
URL: https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=L&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2
}
}
核心代码逻辑：
objc_msgSend_3E84298((void *)curMLServerABRLoader->_loadRetryPolicy, "didCompleteLoadWithError:", error_);
if ( error_ )
{
if ( (unsigned int)objc_msgSend_3E84298((void *)curMLServerABRLoader->_loadRetryPolicy, "canRetry") )
{
blockInvoke = callMLServerABRLoaderContinueLoading_107B5A8;
objc_msgSend_3E84298((void *)loadRetryPolicy, "scheduleRetryWithBlock:", &StackBlock);
}
else
{
blockInvoke1 = callMLServerABRLoaderFailWithError_107B5B8;
}
}
调用到：
MLDefaultLoadRetryPolicy canRetry
MLDefaultLoadRetryPolicy didCompleteLoadWithError:
MLDefaultLoadRetryPolicy scheduleRetryWithBlock:
callMLServerABRLoaderContinueLoading_107B5A8
callMLServerABRLoaderFailWithError_107B5B8
MLDefaultLoadRetryPolicy didCompleteLoadWithError:
参数：
case 1: error=NULL
case 2: NSError(
Error Domain=com.google.ios.hamplayer
Code=10000 "(null)"
UserInfo={
HAMRequestNumberLoadTaskKey=1,
HAMErrorURLRequest=<NSMutableURLRequest: 0x2838e9480>{
URL: https://rr4---sn-a5msenes.googlevideo.com/videoplayback?expire=1654443385&ei=GXmcYoryCa-RsfIP1Oy_mAs&ip=104.172.170.169&id=o-ANzDZ3h7N5rZAloUCdQGuYMBEb80Uu_e4KPc7xaAyG1K&source=youtube&requiressl=yes&mh=_h&mm=31,29&mn=sn-a5msenes,sn-a5mekn6k&ms=au,rdu&mv=m&mvi=4&pl=17&ctier=L&initcwndbps=1842500&svpuc=1&sabr=1&mt=1654421335&fvip=1&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIgLJQmm-EOXj9xFFyjCBHlgn2RiukSzRseDFdGPROqJ8ACIQCdoic9p3flB3FJOu2lqys31IE4I-wBZKNPR-hjkf0HHA%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgULlnjQq0nkVEN6oLDPNPfvxUrcF1uFeiOfQiUhNE9RMCIGbuOCNl2TVJp2VegKsJVujYtW_j53A1zYzznjVe3xp3&cpn=q6v1kI3_nWlzP4Qd&rn=1
}
}
)
核心代码逻辑：
if ( inputError )
{
if ( objc_msgSend_3E84298(inputError, "code") != &zero_2710 && objc_msgSend_3E84298(inputError_, "code") != algn0x20_1779 )
{
objc_msgSend_3E84298((void *)curMLDefaultLoadRetryPolicy->_errors, "addObject:", inputError_);
objc_msgSend_3E84298(curMLDefaultLoadRetryPolicy->_backoffCalculator, "updateInterval");
}
}
else
{
objc_msgSend_3E84298((void *)curMLDefaultLoadRetryPolicy->_errors, "removeAllObjects");
objc_msgSend_3E84298(curMLDefaultLoadRetryPolicy->_backoffCalculator, "resetInterval");
objc_msgSend_3E84298(curMLDefaultLoadRetryPolicy, "cancelRetryAndResetBackoff:", 0LL);
}
调用到：
MLDefaultLoadRetryPolicy cancelRetryAndResetBackoff:
MLDefaultLoadRetryPolicy cancelRetryAndResetBackoff:
核心逻辑：
++self->_retryID;
curMLDefaultLoadRetryPolicy->_retryBlock = 0LL;
MLDefaultLoadRetryPolicy scheduleRetryWithBlock:
核心逻辑：
curMLDefaultLoadRetryPolicy->_retryBlock = newRetryBlock_2;
if ( !curRetryBlock )
{
retryID = curMLDefaultLoadRetryPolicy->_retryID;
objc_msgSend_3E84298(curMLDefaultLoadRetryPolicy->_backoffCalculator, "interval");
dispathTime_backoffInterval = dispatch_time(0LL, (signed __int64)(backoffInterval * 1000000000.0));
blockInvoke = callExecuteRetryBlockWithRetryID_FF3070;
}
调用到：
callExecuteRetryBlockWithRetryID_FF3070
Cronet_UrlRequestCallback_OnResponseStarted_194CCE4 = ___lldb_unnamed_symbol15676$$Module_Framework + 80 = sub_194CCE4
代码核心逻辑：
if ( !curCronetDataLoadTask->taskCancelled_ )
{
newNSHTTPURLResponse = generateNewHttpResponse_194D6D8(responseInfo_);
objc_msgSend_3E84298(
(void *)curCronetDataLoadTask_->delegate_,
"dataLoadTask:didReceiveResponse:",
curCronetDataLoadTask_->parentTask_,
curCronetDataLoadTask_->response_
);
if ( (signed int)getResponseStatusCode_3DFA210(responseInfo_) < 400 )
{
curCronetDataLoadTask_->bufferData_ = malloc(curCronetDataLoadTask_->bufferDataSize_);
tryResetTimeoutTimer_194C704(curCronetDataLoadTask_);
cronetUrlRequestReadResult = callCronetUrlRequestRead_3DF9370(request_);
if ( (_DWORD)cronetUrlRequestReadResult ) // read error
{
...
}
}
else
{
newHamError = objc_msgSend_3E84298(
&OBJC_CLASS___NSError,
"HAMErrorWithURLResponse:userInfo:request:",
curCronetDataLoadTask_->response_,
curCronetDataLoadTask_->userInfo_,
curCronetDataLoadTask_->URLRequest_
);
objc_msgSend_3E84298(
(void *)curCronetDataLoadTask_->delegate_,
"dataLoadTask:didCompleteWithError:",
curCronetDataLoadTask_->parentTask_,
newHamError_
);
objc_msgSend_3E84298(
(void *)curCronetDataLoadTask_->observer_,
"dataLoadTask:didCompleteWithError:",
curCronetDataLoadTask_->parentTask_,
newHamError_
);
objc_msgSend_3E84298(curCronetDataLoadTask_->timeoutTimer_, "invalidate");
}
}
================================================================================
--------------------------------------------------------------------------------
新生成 ctier=L 的 NSMutableURLRequest 请求 的函数调用顺序：
-[HAMPlayerInternal playerLoop] + 1736
-[HAMBaseTrackRenderer prepareAndReturnError:] + 48
-[HAMSBARAudioTrackRenderer internalPrepareAndReturnError:] + 40
-[HAMQueueingRootSampleBufferSource prepareAndReturnError:] + 704
-[HAMDASHSampleBufferSource prepareAndReturnError:] + 100
-[MLServerABRController prepareAndReturnError:] + 40
-[MLServerABRLoader continueLoading] + 840
-[MLServerABRDataLoader createDataLoadTaskForRequest:] + 128
-[MLServerABRDataLoader dataLoadTaskForHTTPBody:isPrimaryHostProbing:] + 424
-[HAMCronetDataLoader taskWithRequest:userInfo:] + 140
-[HAMDataLoadRequest buildURLRequest] + 140
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
某次参数：
URL="https://rr4---sn-nx57ynsz.googlevideo.com/videoplayback?expire=1655759112&ei=p4ywYoCpO-GMsfIP9c-j-A0&ip=72.174.144.110&id=o-AOtW_cgK5DpGSlTFzlnNQ5jG-qYf6YbO-W_J4o6Z7Bg0&source=youtube&requiressl=yes&mh=mR&mm=31,29&mn=sn-nx57ynsz,sn-nx5s7n7y&ms=au,rdu&mv=m&mvi=4&pl=19&ctier=L&initcwndbps=1712500&svpuc=1&sabr=1&mt=1655737257&fvip=1&keepalive=yes&fexp=24001373,24007246,24208264&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgdJbzVTf5BpT1a0Qd-15luRpD3uxu9oqoIBFYuNPFrw0CIHogAdP_kVZFI1gE2yvIbih1AY5458ViOpGC77ywCY1Y&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgUMelUGd_HH1szTAu1xTcLTCTp0LZCwG81qqdxbtYQoMCIB1IHI2PgnSgrenK-M60dwFaKwacbIvmjERFx0ri9OG9&cpn=G0hmRCCW6nH0wNIr&rn=1"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
CFNetwork`___lldb_unnamed_symbol231$$CFNetwork + 64
NSURLRequest initWithURL:cachePolicy:timeoutInterval:
某次参数：
URL="https://rr4---sn-nx57ynsz.googlevideo.com/videoplayback?expire=1655759112&ei=p4ywYoCpO-GMsfIP9c-j-A0&ip=72.174.144.110&id=o-AOtW_cgK5DpGSlTFzlnNQ5jG-qYf6YbO-W_J4o6Z7Bg0&source=youtube&requiressl=yes&mh=mR&mm=31,29&mn=sn-nx57ynsz,sn-nx5s7n7y&ms=au,rdu&mv=m&mvi=4&pl=19&ctier=L&initcwndbps=1712500&svpuc=1&sabr=1&mt=1655737257&fvip=1&keepalive=yes&fexp=24001373,24007246,24208264&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgdJbzVTf5BpT1a0Qd-15luRpD3uxu9oqoIBFYuNPFrw0CIHogAdP_kVZFI1gE2yvIbih1AY5458ViOpGC77ywCY1Y&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRAIgUMelUGd_HH1szTAu1xTcLTCTp0LZCwG81qqdxbtYQoMCIB1IHI2PgnSgrenK-M60dwFaKwacbIvmjERFx0ri9OG9&cpn=G0hmRCCW6nH0wNIr&rn=1"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
--------------------------------------------------------------------------------
触发 HAMCronetDataLoadTask startWithDelegate:delegateQueue: 的调用顺序：
[第一次 rn=1 ctiler=L]
-[HAMPlayerInternal playerLoop] + 1736
-[HAMBaseTrackRenderer prepareAndReturnError:] + 48
-[HAMSBARAudioTrackRenderer internalPrepareAndReturnError:] + 40
-[HAMQueueingRootSampleBufferSource prepareAndReturnError:] + 704
-[HAMDASHSampleBufferSource prepareAndReturnError:] + 100
-[MLServerABRController prepareAndReturnError:] + 40
_logos_method$_ungrouped$MLServerABRLoader$continueLoading(self=0x000000012e689210, _cmd="continueLoading") at youtubeCronet.xm:289:5
-[MLServerABRLoader continueLoading] + 924
-[MLServerABRDataLoadTask startWithDelegate:delegateQueue:] + 88
HAMCronetDataLoadTask startWithDelegate:delegateQueue:
某次的参数：
arg1=delegate=<MLServerABRDataLoadTask: 0x284243690>
arg2=delegateQueue=<OS_dispatch_queue_serial: MLHAMPlayer>
此时：
reqUrl
rn=1: https://rr1---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1658155941&ei=RR_VYqa6GJTlNsC6gIgE&ip=162.253.45.206&id=o-AGLA8-7MEt9wIIkvKGany12Vu6HmM4t-R27oa-wU3eyG&source=youtube&requiressl=yes&mh=Mk&mm=31,29&mn=sn-phvo-jpql,sn-vgqsrnsd&ms=au,rdu&mv=m&mvi=1&pl=22&ctier=L&initcwndbps=1168750&svpuc=1&sabr=1&mt=1658133649&fvip=5&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIhAMoq1fU-fdprDjIkRanRHLMJLg-mISEmElCC7_OqigFVAiBpC6IpBGXN_mWIzoPn8nG2Ah4WNEIauk5j3_y4uUJooQ%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIgaeU1mBeqHILR9DlKWm0nihNijdMhZgAFvJjbZKW1FrUCIQDFRyVh1aMUMdMDCNfmmOPgasbwsu5dLSdY3JFfsKFiKw%3D%3D&cpn=2oxmwItyhlTlzWXv&rn=1
[第二次 rn=2 ctiler=L]
-[MLDefaultLoadRetryPolicy scheduleRetryWithBlock:]_block + 44
-[MLDefaultLoadRetryPolicy executeRetryBlockWithRetryID:] + 68
-[MLServerABRLoader continueLoading] + 924
-[MLServerABRDataLoadTask startWithDelegate:delegateQueue:] + 88
HAMCronetDataLoadTask startWithDelegate:delegateQueue:
某次的参数：
arg1=delegate=<MLServerABRDataLoadTask: 0x286198f00>
arg2=delegateQueue=<OS_dispatch_queue_serial: MLHAMPlayer[0x280218180] = { xref = 34, ref = 5, sref = 2, target = com.apple.root.user-initiated-qos.overcommit[0x11050d080], width = 0x1, state = 0x006000a500001801, enqueued, dirty, max qos 5, draining on 0x1803, in-barrier}>
此时：
reqUrl
rn=2时: https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1658305786&ei=mWjXYuCLOOucir4P3c6AiAQ&ip=162.253.45.206&id=o-AMnr7yIbmMhFTmywfJSN8wAIx4A4Qoq0hGO91N7dCzIp&source=youtube&requiressl=yes&mh=hx&mm=31,29&mn=sn-phvo-jpql,sn-vgqsknek&ms=au,rdu&mv=m&mvi=2&pcm2cms=yes&pl=22&ctier=L&initcwndbps=1031250&svpuc=1&sabr=1&mt=1658283891&fvip=1&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhANNsZzr74YwYCad-wykDLNs7C6jNLkdlTSuiVTHlI2v0AiEA4JnoG-7SCvNPKqt9iFwCbPDyHgfX8NtTULRDqp6HnRM%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgXZKQOPCBuuyxe3Bdk0qXJbgIxsJqr_7LpKHE7xQ1OnQCIQDq4WnBDfATQNkxbpOWAQ_RM4NEThcpb0aqUFqbjUC1vg%3D%3D&cpn=aCkM2ux19mPWYM5x&rn=2
[第三次 rn=2&rn=3 ctiler=A]
调用顺序同上
但是URL略有不同
此时：
reqUrl
rn=3时: https://rr2---sn-phvo-jpql.googlevideo.com/videoplayback?expire=1658305786&ei=mWjXYuCLOOucir4P3c6AiAQ&ip=162.253.45.206&id=o-AMnr7yIbmMhFTmywfJSN8wAIx4A4Qoq0hGO91N7dCzIp&source=youtube&requiressl=yes&mh=hx&mm=31,29&mn=sn-phvo-jpql,sn-vgqsknek&ms=au,rdu&mv=m&mvi=2&pcm2cms=yes&pl=22&ctier=A&initcwndbps=1031250&svpuc=1&sabr=1&mt=1658283891&fvip=1&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhANNsZzr74YwYCad-wykDLNs7C6jNLkdlTSuiVTHlI2v0AiEA4JnoG-7SCvNPKqt9iFwCbPDyHgfX8NtTULRDqp6HnRM%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgXZKQOPCBuuyxe3Bdk0qXJbgIxsJqr_7LpKHE7xQ1OnQCIQDq4WnBDfATQNkxbpOWAQ_RM4NEThcpb0aqUFqbjUC1vg%3D%3D&cpn=aCkM2ux19mPWYM5x&rn=2&rn=3
--------------------------------------------------------------------------------
ctier=L 的 请求 NSMutableURLRequest 也返回 NSError 出错 的函数调用顺序
-[HAMPlayerInternal playerLoop] + 1736
-[HAMBaseTrackRenderer prepareAndReturnError:] + 48
-[HAMPixelBufferVideoTrackRenderer internalPrepareAndReturnError:] + 40
-[HAMVideoDecoderSampleBufferSource prepareAndReturnError:] + 80
-[HAMQueueingRootSampleBufferSource prepareAndReturnError:] + 632
-[HAMDASHSampleBufferSource seekToTime:] + 140
-[MLServerABRController seekToTime:] + 36
-[MLServerABRLoader seekDidOccur] + 148
___lldb_unnamed_symbol15667$$Module_Framework + 112
NSError HAMErrorWithCode:userInfo:
某次的参数：
arg1=10000
arg2={
HAMErrorURLRequest = "<NSMutableURLRequest: 0x28302c0b0> { URL: https://rr2---sn-nx5s7nel.googlevideo.com/videoplayback?expire=1655754561&ei=4HqwYt29JNSDkwbAt5vQDg&ip=72.174.144.110&id=o-AJjQlPwnnZAb4c4XmDyophxk9bxSybJHNgVtg0xPnY5B&source=youtube&requiressl=yes&mh=Vb&mm=31,29&mn=sn-nx5s7nel,sn-nx57ynsl&ms=au,rdu&mv=m&mvi=2&pl=19&ctier=L&initcwndbps=1721250&svpuc=1&sabr=1&mt=1655732690&fvip=2&keepalive=yes&fexp=24001373,24007246,24208264&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIhAIoI_-R65dCbFSiymVXG3fMpNeJO5LUNC-t_O1IRl6aJAiBy8tnuzG_Gag61Wwu-Pk1DAyQd1MvY4t2MVxvfYVA5mg%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIhAPgKcNRbTnALWCxhsV7ZpQ48EmZyL8VzBjUOIbM1y6SfAiAMJA2YCB4AUnlHaS9MuE1aWCkpY5JLkHyY5yooEGQU9Q%3D%3D&cpn=uDxkagKFinGD-plw&rn=1 }";
HAMRequestNumberLoadTaskKey = 1;
}
NSError errorWithDomain:code:userInfo:
某次的参数：
arg1="com.google.ios.hamplayer"
arg2=10000
arg3={
HAMErrorURLRequest = "<NSMutableURLRequest: 0x28302c0b0> { URL: https://rr2---sn-nx5s7nel.googlevideo.com/videoplayback?expire=1655754561&ei=4HqwYt29JNSDkwbAt5vQDg&ip=72.174.144.110&id=o-AJjQlPwnnZAb4c4XmDyophxk9bxSybJHNgVtg0xPnY5B&source=youtube&requiressl=yes&mh=Vb&mm=31,29&mn=sn-nx5s7nel,sn-nx57ynsl&ms=au,rdu&mv=m&mvi=2&pl=19&ctier=L&initcwndbps=1721250&svpuc=1&sabr=1&mt=1655732690&fvip=2&keepalive=yes&fexp=24001373,24007246,24208264&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIhAIoI_-R65dCbFSiymVXG3fMpNeJO5LUNC-t_O1IRl6aJAiBy8tnuzG_Gag61Wwu-Pk1DAyQd1MvY4t2MVxvfYVA5mg%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIhAPgKcNRbTnALWCxhsV7ZpQ48EmZyL8VzBjUOIbM1y6SfAiAMJA2YCB4AUnlHaS9MuE1aWCkpY5JLkHyY5yooEGQU9Q%3D%3D&cpn=uDxkagKFinGD-plw&rn=1 }";
HAMRequestNumberLoadTaskKey = 1;
}
--------------------------------------------------------------------------------
说明：下面是 ctier=A 的 NSURLRequest 的调用顺序
[case 1]
-[MLDefaultLoadRetryPolicy scheduleRetryWithBlock:]
-[MLDefaultLoadRetryPolicy scheduleRetryWithBlock:]_block + 44
-[MLDefaultLoadRetryPolicy executeRetryBlockWithRetryID:] + 68
某次的参数：arg1=3
MLServerABRLoader continueLoading
-[MLServerABRLoader continueLoading] + 840
-[MLServerABRDataLoader createDataLoadTaskForRequest:] + 128
-[MLServerABRDataLoader dataLoadTaskForHTTPBody:isPrimaryHostProbing:] + 424
-[HAMCronetDataLoader taskWithRequest:userInfo:] + 140
[HAMDataLoadRequest buildURLRequest] + 140
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
某次的参数：
URL="https://rr1---sn-bvvbax4pcxg-najl.googlevideo.com/videoplayback?expire=1654284469&ei=VAyaYvi5G4eHsfIPqoK1kAg&ip=136.36.116.116&id=o-AD4uH0_eMoADlcTGlFs1Uw5dhdYtelrEPN9konw5oPZb&source=youtube&requiressl=yes&mh=_u&mm=31,29&mn=sn-bvvbax4pcxg-najl,sn-o097znsl&ms=au,rdu&mv=m&mvi=1&pl=20&ctier=A&initcwndbps=1786250&svpuc=1&sabr=1&mt=1654262462&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIgRHLJbeJI4tvvoD9pV1KThMgoBW8xgE27L2nGFfXaX6YCIQC6SEOoNiuui3-5O_gkauy6nXCQZN1Es1omMAH7ZoPfyQ%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIhAKMDmxqaOMD0YMFLUgG8otkDKKVPLHSBRuD3yKVVpd-DAiB73wqU9tdTRN5zW-yIL3kXDXwNuQ7L4ua7n00tb6YnFA%3D%3D&cpn=WPioc6dOPwVsC718&rn=2&rn=5"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
某次的返回值：
<NSMutableURLRequest: 0x280ab2460> {
URL: https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=L&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=1
}
CFNetwork`___lldb_unnamed_symbol231$$CFNetwork + 64
NSURLRequest initWithURL:cachePolicy:timeoutInterval:
参数 case 1：
URL="https://rr1---sn-bvvbax4pcxg-najl.googlevideo.com/videoplayback?expire=1654284469&ei=VAyaYvi5G4eHsfIPqoK1kAg&ip=136.36.116.116&id=o-AD4uH0_eMoADlcTGlFs1Uw5dhdYtelrEPN9konw5oPZb&source=youtube&requiressl=yes&mh=_u&mm=31,29&mn=sn-bvvbax4pcxg-najl,sn-o097znsl&ms=au,rdu&mv=m&mvi=1&pl=20&ctier=A&initcwndbps=1786250&svpuc=1&sabr=1&mt=1654262462&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIgRHLJbeJI4tvvoD9pV1KThMgoBW8xgE27L2nGFfXaX6YCIQC6SEOoNiuui3-5O_gkauy6nXCQZN1Es1omMAH7ZoPfyQ%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIhAKMDmxqaOMD0YMFLUgG8otkDKKVPLHSBRuD3yKVVpd-DAiB73wqU9tdTRN5zW-yIL3kXDXwNuQ7L4ua7n00tb6YnFA%3D%3D&cpn=WPioc6dOPwVsC718&rn=2&rn=5"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
参数 case 2：
URL="https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=A&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2&rn=3"
cachePolicy=NSURLRequestUseProtocolCachePolicy
timeoutInterval=60
return <NSMutableURLRequest: 0x28063c790> {
URL: https://rr1---sn-bvvbax4pcxg-najl.googlevideo.com/videoplayback?expire=1654284469&ei=VAyaYvi5G4eHsfIPqoK1kAg&ip=136.36.116.116&id=o-AD4uH0_eMoADlcTGlFs1Uw5dhdYtelrEPN9konw5oPZb&source=youtube&requiressl=yes&mh=_u&mm=31,29&mn=sn-bvvbax4pcxg-najl,sn-o097znsl&ms=au,rdu&mv=m&mvi=1&pl=20&ctier=A&initcwndbps=1786250&svpuc=1&sabr=1&mt=1654262462&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRQIgRHLJbeJI4tvvoD9pV1KThMgoBW8xgE27L2nGFfXaX6YCIQC6SEOoNiuui3-5O_gkauy6nXCQZN1Es1omMAH7ZoPfyQ%3D%3D&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIhAKMDmxqaOMD0YMFLUgG8otkDKKVPLHSBRuD3yKVVpd-DAiB73wqU9tdTRN5zW-yIL3kXDXwNuQ7L4ua7n00tb6YnFA%3D%3D&cpn=WPioc6dOPwVsC718&rn=2&rn=5
}
[case 2]
-[HAMPlayerInternal playerLoop] + 1736
-[HAMBaseTrackRenderer prepareAndReturnError:] + 48
-[HAMSBARAudioTrackRenderer internalPrepareAndReturnError:] + 40
-[HAMQueueingRootSampleBufferSource prepareAndReturnError:] + 704
-[HAMDASHSampleBufferSource prepareAndReturnError:] + 100
-[MLServerABRController prepareAndReturnError:] + 40
-[MLServerABRLoader continueLoading] + 840
-[MLServerABRDataLoader createDataLoadTaskForRequest:] + 128
-[MLServerABRDataLoader dataLoadTaskForHTTPBody:isPrimaryHostProbing:] + 424
-[HAMCronetDataLoader taskWithRequest:userInfo:] + 140
-[HAMDataLoadRequest buildURLRequest] + 140
NSURLRequest requestWithURL:cachePolicy:timeoutInterval:
CFNetwork`___lldb_unnamed_symbol231$$CFNetwork + 64
NSURLRequest initWithURL:cachePolicy:timeoutInterval:
--------------------------------------------------------------------------------
说明：下面是 ctier=A 的 response = NSHTTPURLResponse 的调用顺序
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36 = sub_194D978
___lldb_unnamed_symbol110205$$Module_Framework + 40 = sub_38FCE24
___lldb_unnamed_symbol171000$$Module_Framework + 28 = sub_3DF8048
___lldb_unnamed_symbol170908$$Module_Framework + 52 = sub_3DF60E8
Cronet_UrlRequestCallback_OnResponseStarted_194CCE4 = ___lldb_unnamed_symbol15676$$Module_Framework + 80 = sub_194CCE4
generateNewHttpResponse_194D6D8 = ___lldb_unnamed_symbol15681$$Module_Framework + 376 = sub_194D6D8
NSHTTPURLResponse initWithURL:statusCode:HTTPVersion:headerFields:
某次参数:
url="https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=A&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2&rn=3",
statusCode=200,
HTTPVersion=0x0000000000000000,
headerFields=4 key/value pairs
某次的返回值：
<NSHTTPURLResponse: 0x280ee1d00> {
URL: https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=A&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2&rn=3
}
{
Status Code: 200,
Headers {
Connection = "keep-alive"
"Content-Length" = 0
"Content-Type" = "application/vnd.yt-ump"
Server = "atomos-tproxy 1.0"
}
}
--------------------------------------------------------------------------------
触发了 HAMCronetDataLoadTask startWithDelegate:delegateQueue: 当第一次 ctier=A 的url 时的调用顺序：
-[MLDefaultLoadRetryPolicy scheduleRetryWithBlock:]_block + 44
-[MLDefaultLoadRetryPolicy executeRetryBlockWithRetryID:] + 68
某次参数：
arg1=2
-[MLServerABRLoader continueLoading] + 924
-[MLServerABRDataLoadTask startWithDelegate:delegateQueue:] + 88
某次的参数：
arg1=<MLServerABRDataLoadTask: 0x281226d00>
arg2=<OS_dispatch_queue_serial: MLHAMPlayer[0x282d34f00] = { xref = 33, ref = 6, sref = 2, target = com.apple.root.user-initiated-qos.overcommit[0x10c651080], width = 0x1, state = 0x006000a50001a401, enqueued, dirty, max qos 5, draining on 0x1a403, in-barrier}>
--------------------------------------------------------------------------------
下面是 ctier=A 的 response = NSHTTPURLResponse 在生成了之后，被调用到 statusCode 时的调用顺序
-[MLPlayerItemEventCenter networkRequestDidReceiveResponseWithEvent:] + 204
-[MLQOEPingController networkRequestDidReceiveResponseWithEvent:] + 272
NSHTTPURLResponse statusCode
return 200;
--------------------------------------------------------------------------------
说明：下面是 ctier=A 的response后的，始终retry重发请求的相关的调用逻辑
[case 1]
cancelCronetDataLoadTask_194BFB8
reportDataLoadTaskError_194DA94 = sub_194DA94 = ___lldb_unnamed_symbol15689$$Module_Framework + 40
-[MLServerABRDataLoadTask dataLoadTask:didCompleteWithError:] + 368
-[MLServerABRLoader dataLoadTask:didCompleteWithError:] + 260
参数
case 1：
arg1=0x0000000281aaa490
arg2=domain: "com.google.ios.hamplayer" - code: 10000
case 2：
arg1=0x0000000280597a50
arg2=domain: "com.google.ios.hamplayer" - code: 6009
MLServerABRLoader updateLoadRetryPolicyOnLoadCompletionWithError:
[case 2]
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36
___lldb_unnamed_symbol110205$$Module_Framework + 40
___lldb_unnamed_symbol171023$$Module_Framework + 32
___lldb_unnamed_symbol170906$$Module_Framework + 84
Cronet_UrlRequestCallback_OnRedirectReceived_194C9D8 = ___lldb_unnamed_symbol15675$$Module_Framework + 620
-[MLServerABRDataLoadTask dataLoadTask:didCompleteWithError:] + 368
-[MLServerABRLoader dataLoadTask:didCompleteWithError:] + 260
MLServerABRLoader updateLoadRetryPolicyOnLoadCompletionWithError:
[case 3]
找到 死循环 多次重试的调用关系了：
callHAMTimerFire_199CFB8 = -[HAMTimer initWithQueue:startNanoseconds:intervalNanoseconds:leewayNanoseconds:repeats:block:]_block + 36
-[HAMTimer fire] + 52
callMLOnesieConnectionOpenerOnPingTimer_1039FB8 = sub_1039FB8 = -[MLOnesieConnectionOpener scheduleNextRequestUsingStartDelay:]_block + 36
-[MLOnesieConnectionOpener onPingTimer] + 180
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:] + 932
tryResetTimeoutTimer_194C704 = sub_194C704 = ___lldb_unnamed_symbol15674$$Module_Framework + 200
+[HAMTimer timerWithQueue:startNanoseconds:leewayNanoseconds:block:] + 104
-[HAMTimer initWithQueue:startNanoseconds:intervalNanoseconds:leewayNanoseconds:repeats:block:]
===>>>
-[HAMTimer initWithQueue:startNanoseconds:intervalNanoseconds:leewayNanoseconds:repeats:block:]
-[HAMTimer initWithQueue:startNanoseconds:intervalNanoseconds:leewayNanoseconds:repeats:block:]_block + 36
-[HAMTimer fire] + 52
callMLOnesieConnectionOpenerOnPingTimer_1039FB8 = sub_1039FB8 = = -[MLOnesieConnectionOpener scheduleNextRequestUsingStartDelay:]_block + 36
-[MLOnesieConnectionOpener onPingTimer] + 180
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:] + 648
某次参数：
arg1=<MLOnesieConnectionOpener: 0x2829dde00>
delegateQueue =<OS_dispatch_queue_serial: queue_serial[0x283868800] = { xref = 8, ref = 5, sref = 2, target = com.apple.root.default-qos.overcommit[0x104664f80], width = 0x1, state = 0x006000a500012805, enqueued, dirty, max qos 5, draining on 0x12807, in-barrier}>
核心代码:
sub_3DF9004(sub_194C27C);
Cronet_Executor_ExecuteFunc_194C27C = sub_194C27C = ___lldb_unnamed_symbol15668
-[HAMCronetDataLoadTask startWithDelegate:delegateQueue:]_block_block + 36 = sub_194D978
___lldb_unnamed_symbol110205$$Module_Framework + 40 = sub_38FCE24
___lldb_unnamed_symbol171000$$Module_Framework + 28 = sub_3DF8048
___lldb_unnamed_symbol170908$$Module_Framework + 52 = sub_3DF60E8
Cronet_UrlRequestCallback_OnResponseStarted_194CCE4 = sub_194CCE4 = ___lldb_unnamed_symbol15676$$Module_Framework + 124
-[MLServerABRDataLoadTask dataLoadTask:didReceiveResponse:] + 424
-[MLServerABRLoader dataLoadTask:didReceiveResponse:]
某次的参数：
arg1=<MLServerABRDataLoadTask: 0x2806a7060>,
arg2=<NSHTTPURLResponse: 0x280ee1d00> {
URL: https://rr1---sn-8xgp1vo-p5ql.googlevideo.com/videoplayback?expire=1654546559&ei=HwyeYrH5DJWN_9EPouqpqA8&ip=70.110.26.104&id=o-ABMZsKNB0GJ_BmboM7YSytnAHB7ASC_Y7GC6jO056wJe&source=youtube&requiressl=yes&mh=ji&mm=31,29&mn=sn-8xgp1vo-p5ql,sn-p5qlsndz&ms=au,rdu&mv=m&mvi=1&pcm2cms=yes&pl=20&ctier=A&initcwndbps=1490000&svpuc=1&sabr=1&mt=1654524545&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRgIhAPnD2xwm1J-b9yvruQe1aozyNm_9xaCQvtdIM7n32vA5AiEA4mVXjIUgf7425J8XlwfLdVhMyDiZHFtRhRE1jHxtWZo%3D&lsparams=mh,mm,mn,ms,mv,mvi,pcm2cms,pl,initcwndbps&lsig=AG3C_xAwRQIgd3ooIz7fpF6JTB11opldSL1WIPtx4L5FaBEqhdEZBLwCIQChh18q1sc8T2XEIwlQBI8O9cF_DI2FPVLjVCNRHhRPCQ%3D%3D&cpn=sjOhS6zpDL-OE-pP&rn=2&rn=3
}
{
Status Code: 200, Headers {
Connection = "keep-alive"
"Content-Length" = 0
"Content-Type" = "application/vnd.yt-ump"
Server = "atomos-tproxy 1.0"
}
}
NSError HAMErrorWithURLResponse:userInfo:request:
某次的参数：
response=<NSHTTPURLResponse: 0x281464760>,
userInfo={
HAMRequestNumberLoadTaskKey = 2;
},
request=<NSMutableURLRequest: 0x2810f1090>
v22 = objc_msgSend((void *)v7, "HAMErrorWithCode:userInfo:", v20=6000, v14=userInfoDict);
NSError HAMErrorWithCode:userInfo:
某次的参数：
hamErrCode=6000,
userInfo=dict
return (id)objc_msgSend((void *)self, "errorWithDomain:code:userInfo:", CFSTR("com.google.ios.hamplayer"), a3, a4);
某次的返回值：
Error Domain=com.google.ios.hamplayer
Code=6000 "(null)"
UserInfo={
HAMErrorHTTPURLResponse=<NSHTTPURLResponse: 0x281ceda60> {
URL: https://rr5---sn-q4flrnee.googlevideo.com/videoplayback?expire=1654110110&ei=PmOXYpHwG-6Rlu8P0LO9yAQ&ip=72.179.224.229&id=o-ANJ-ePUG7jWZMQ_icM7pjIuiwW8IEgTemHHlekQlItK_&source=youtube&requiressl=yes&mh=aT&mm=31,29&mn=sn-q4flrnee,sn-q4fl6ns7&ms=au,rdu&mv=m&mvi=5&pl=21&ctier=A&initcwndbps=1480000&svpuc=1&sabr=1&mt=1654088228&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgTokhxlKrvIZN4PZHmqi4CCoCk-_Bdgi_WTIIrlx1Y7ICIGr2dSn6txZUrrMdum-VwuQ8TbwSK-HTPVVZB28aPwO-&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIgGW-eIbWvW75lrbGlodLzWTMVtDL7KtlxEW-gROi_6_kCIQDwf7k8v2jZdCDAY9KKlCf_k_T4IsKDoL2nm-49RdhBfQ%3D%3D&cpn=F98L8S2i9bcH06us&rn=2&rn=3
}
{
Status Code: 200,
Headers {
Connection = "keep-alive"
"Content-Length" = 0
Server = "atomos-tproxy 1.0"
}
},
HAMRequestNumberLoadTaskKey=3,
HAMErrorURLRequest=<NSMutableURLRequest: 0x281886580> {
URL: https://rr5---sn-q4flrnee.googlevideo.com/videoplayback?expire=1654110110&ei=PmOXYpHwG-6Rlu8P0LO9yAQ&ip=72.179.224.229&id=o-ANJ-ePUG7jWZMQ_icM7pjIuiwW8IEgTemHHlekQlItK_&source=youtube&requiressl=yes&mh=aT&mm=31,29&mn=sn-q4flrnee,sn-q4fl6ns7&ms=au,rdu&mv=m&mvi=5&pl=21&ctier=A&initcwndbps=1480000&svpuc=1&sabr=1&mt=1654088228&fvip=2&keepalive=yes&fexp=24001373,24007246&c=IOS&sparams=expire,ei,ip,id,source,requiressl,ctier,svpuc,sabr&sig=AOq0QJ8wRAIgTokhxlKrvIZN4PZHmqi4CCoCk-_Bdgi_WTIIrlx1Y7ICIGr2dSn6txZUrrMdum-VwuQ8TbwSK-HTPVVZB28aPwO-&lsparams=mh,mm,mn,ms,mv,mvi,pl,initcwndbps&lsig=AG3C_xAwRQIgGW-eIbWvW75lrbGlodLzWTMVtDL7KtlxEW-gROi_6_kCIQDwf7k8v2jZdCDAY9KKlCf_k_T4IsKDoL2nm-49RdhBfQ%3D%3D&cpn=F98L8S2i9bcH06us&rn=2&rn=3
}
}
--------------------------------------------------------------------------------
当 去掉广告过滤 时，调用到 MLServerABRLoader onesieDataLoader:didCompleteChunks:withError: 的顺序：
-[MLOnesieChunkLoadTask initWithRange:chunks:dataBuffer:cache:delegate:queue:latencyLogger:]
sub_10380F8 = -[MLOnesieChunkLoadTask initWithRange:chunks:dataBuffer:cache:delegate:queue:latencyLogger:]_block
sub_10381F8 = -[MLOnesieChunkLoadTask initWithRange:chunks:dataBuffer:cache:delegate:queue:latencyLogger:]_block_block + 344 =
-[HAMBaseChunkLoadTask didCompleteWithError:] + 412
-[MLServerABROnesieDataLoader chunks:didCompleteLoadingWithError:] + 92
MLServerABRLoader onesieDataLoader:didCompleteChunks:withError:
参数举例：
[case 1]:
arg1=0x0000000282b42000,
arg2=1 element,
arg3=domain: "com.google.ios.hamplayer" - code: 10000
[case 2]:
arg1=<MLServerABROnesieDataLoader: 0x282bd5e80>,
arg2=<__NSSingleObjectArrayI 0x2807d1510>(
<HAMMP4InitializationChunk: 0x282bc3b80>
)
arg3=NULL
--------------------------------------------------------------------------------
下面是：MLServerABRLoader initWithQueue 的调用顺序
-[GPCPromise resolveChild:]_block + 128
-[YTVideoResolver registerCompletionBlocksOnPlaybackDataLoader]_block + 64
-[YTVideoResolver didLoadVideoWithPlaybackData:] + 108
-[YTVideoResolver changeToState:] + 92
-[YTLocalPlaybackController videoResolver:didChangeFromState:toState:] + 488
-[YTLocalPlaybackController startPlaybackWithVideoResolver:internallyPrebufferedVideoController:] + 2184
YTAdsControlFlowPlaybackCoordinator startPrerollAdBreak
-[YTAdsControlFlowPlaybackCoordinator startPrerollAdBreak] + 52
-[YTAdsControlFlowPlaybackCoordinator doneWithPlayerBytesSlotWithBreakType:] + 80
-[YTLocalPlaybackController adsPlaybackCoordinator:didFinishBreakWithBreakType:] + 68
-[YTSingleVideoSequencer activateContentSequence] + 224
-[YTSingleVideoSequencer activateVideoController:reloadContext:] + 248
-[YTSingleVideoController initializeAndLoadWithViewportSizeProvider:playerVisibility:reloadContext:] + 860
-[MLHAMQueuePlayer load] + 220
-[MLHAMPlayerItem load] + 3088
MLServerABRLoader initWithQueue:dataLoader:playerEventCenter:playerItemEventCenter:streamingData:mediaCommonConfig:hamplayerConfig:onesieVideoData:QOEController:loadRetryPolicy:isLiveSource:livePlayerConfig:windowedLiveConfig:metadata
说明：某次调试时参数：
arg1=<OS_dispatch_queue_serial: MLHAMPlayer>,
dataLoader=<HAMCronetDataLoader: 0x281782e20>,
playerEventCenter=(null),
playerItemEventCenter=<MLPlayerItemEventCenter: 0x2833eb6b0>,
streamingData=<MLStreamingData: 0x2801f8940>,
mediaCommonConfig=<YTIMediaCommonConfig 0x282a39200>: {
dynamic_readahead_config {
max_read_ahead_media_time_ms: 8000
min_read_ahead_media_time_ms: 15000
read_ahead_growth_rate_ms: 1000
}
media_ustreamer_request_config {
video_playback_use_ump: true
video_playback_ustreamer_config: "\n\317\003\n\326\002\010\000\020\200\005\030\350\002%\372~\252>-\000\000\200?5=\n\227?h\001r9\n\022mfs2_cmfs_v3_1_043\022\037\n\035\n\014device_model\022\r\n\013\n\tiphone9,1\030\000 \001r\026\n\022mfs2_cmfs_v3_1_043\030\000x\350\002\200\001\001\250\001\001\265\001\366(\334?\240\002\350\002\332\002\\\020\260\352\001\030\250F \240\234\001(\33060\230uH\001P\001X\001h\001p\210\'\200\001\364\003\270\001\001\300\001\001\340\001\003\370\001\001\210\002\001\220\002\001\230\002\014\240\002\001\250\002\001\260\002\001\270\002\001\300\002\001\310\002\001\320\002\002\340\002\001\350\002\002\200\003\002\220\003\001\370\265\221\345\014\001\372\002-\010\014\020\030\0302 2-\000\000pB5\000\000\214B@\001H\001P\nX\ne\000\000\200@h\300pp\001\210\001\001\315\001\000\000\200?\202\003\000\210\003\001\220\003\001\240\003\001\250\003\001\260\003\003\310\003\001\320\003\001\330\003\001\340\003\220N\270\004\001\312\004\035\n\024\010\300>\020\230u\030\350\007%\000\000\000\000(\0000\000@\001\020\340\324\003\030\320\017\360\004\001\370\004\001\030\001 \0012\014\010\211\001\020\257\267\220\271\236\212\367\0022\014\010\210\001\020\314\203\356\267\236\212\367\0022\014\010\207\001\020\343\206\301\271\236\212\367\0022\014\010\206\001\020\366\305\356\267\236\212\367\0022\014\010\205\001\020\306\327\220\271\236\212\367\0022\014\010\240\001\020\236\312\314\270\236\212\367\0022\014\010\213\001\020\217\354\253\267\236\212\367\0022\014\010\214\001\020\266\312\253\267\236\212\367\002:\000\022L\000\362\330\357\3010E\002!\000\230\215\'\203G\270\247?\020\342\310\337E\255\271;\354\266\367\210\342\0247\233~\206\3612l\177\363\200\002 ^\262\221\336\225\324\217B\213H\327r\217\352\327]\335\253E*Y_\210\216\tI\336\027bA\274\177\032\002ei"
}
server_readahead_config {
enable: true
next_request_policy {
target_audio_readahead_ms: 120000
target_video_readahead_ms: 120000
}
}
use_server_driven_abr: true
sabr_client_config {
default_back_off_time_ms: 0
enable_host_fallback: true
primary_probing_delay_ms: 5000
max_failure_attempts_before_fallback: 2
}
},
hamplayerConfig=<YTIHamplayerConfig 0x110ca4440>: {
enable_on_cellular: true
qos_class: IOS_QOS_CLASS_USER_INITIATED
decode_qos_class: IOS_QOS_CLASS_USER_INITIATED
video_track_renderer {
hamplayer_pixel_buffer_video_track_renderer_config {
min_frame_queue_size: 3
target_frame_queue_size: 22
max_frame_fall_behind_ms: 500
queue_more_frames_on_render: true
}
}
stall_predictor {
hamplayer_default_stall_predictor_config {
max_buffer_readahead_ms: 8000
min_buffer_readahead_ms: 1500
bandwidth_tweak_scalar: 0.95
bandwidth_tweak_constant: -48000
}
}
live {
enable_accurate_seek: false
accurate_seek_retry_limit: 3
enable_accurate_seek_after_prepared: false
enable_ss_dai_emsg_parsing: true
enable_ss_dai_update_chunk_start_time: true
fix_post_live_head_segment: false
finish_live_playback_if_stream_completed: false
}
async_decode: true
network_stats_sampler_config {
minimum_sample_size: 8192
minimum_sample_duration_ms: 1
target_sample_duration_ms: 400
}
decode_teardown_on_decode_queue: true
decode_wait_for_frames_before_teardown: true
decode_separate_queues: true
decode_no_wait_for_terminate: true
resync_policy_config {
target_readahead_ms: 2000
min_required_time_ms: 500
max_elapsed_time_ms: 10000
seek_tolerance_ms: 1000
}
audio_abr_config {
downshift_scalar: 3
downshift_constant: 0
upshift_scalar: 6
upshift_constant: 0
max_downshift_readahead_ms: 30000
min_upshift_readahead_ms: 0
upshift_replace_media: false
buffer_target_readahead: 8
buffer_max_size_bytes: 107374182
buffer_trim_behind: 60
buffer_trim_ahead: 120
max_chunks_per_request: 0
sync_readahead: 10
stun_duration: 0
max_consecutive_errors: 0
min_upshift_replace_chunks_readahead_ms: 5000
low_memory_warn_buffer_size_bytes: 107374182
low_memory_critical_buffer_size_bytes: 107374182
low_memory_buffer_size_cool_down_ms: 0
disable_hdr_in_low_power_mode: true
observe_network_active_controller: false
}
video_abr_config {
downshift_scalar: 1
downshift_constant: 48000
upshift_scalar: 1
upshift_constant: 48000
oversend_factor: 1.18
max_downshift_readahead_ms: 30000
min_upshift_readahead_ms: 0
upshift_replace_media: false
local_max_bitrate_readahead: 15
buffer_target_readahead: 8
buffer_max_size_bytes: 751619276
buffer_trim_behind: 60
buffer_trim_ahead: 120
max_chunks_per_request: 0
min_readahead_for_average_bitrate: 10000
load_extra_formats: false
sync_readahead: 10
stun_duration: 10
use_high_replication_formats_while_stunned: true
max_consecutive_errors: 4
min_upshift_replace_chunks_readahead_ms: 5000
max_media_seconds_per_request: 11
low_memory_warn_buffer_size_bytes: 751619276
low_memory_critical_buffer_size_bytes: 751619276
low_memory_buffer_size_cool_down_ms: 0
disable_hdr_in_low_power_mode: true
hpq_oversend_factor: 1.72
observe_network_active_controller: false
}
enable_airplay_audio: true
chunk_loader_config {
enable_fallback_host: true
max_failure_attempts_before_fallback: 3
primary_probing_delay: 5000
treat_no_media_as_cancellation: true
}
sbar_audio_track_renderer {
samples_per_buffer: 10
flush_on_return_from_background: true
trim_priming: false
feed_media_data: true
handle_automatic_flush: true
renderer_max_retry_count: 2
use_all_tracks_for_playability_status: false
}
use_multiple_periods_player: true
load_retry_config {
max_non_network_errors: 2
}
render_view_type: HAMPLAYER_RENDER_VIEW_TYPE_IOSURFACE_MAIN_THREAD
server_abr_config {
fallback_on_error: true
fallback_disable_server_abr_duration_seconds: 5
enable_local_streams: false
log_partial_chunk_eviction: false
max_fallback_attempts: 5
seek_through_medialib_when_receiving_partial_chunk: false
continue_loading_timer_interval_ms: 1000
continue_loading_timer_leeway_ms: 100
cover_chunk_discontinuity: true
keep_stall_for_live_when_close_to_seekable_end: false
allow_multiple_server_seek: true
use_reload_context_for_fallback: true
}
use_new_sample_buffer_source: true
stop_track_renderer_before_disabling: true
log_debug_details_on_long_wait_threshold_ms: 15000
deprecate_stall_predictor: true
player_loop_timer_interval_ms: 20
player_loop_timer_leeway_ms: 0
offline_config {
downloader_apply_audio_track_filter: false
downloader_apply_abr_filter: false
}
select_default_track_for_multi_audio: true
use_reload_context_request_number: true
},
onesieVideoData=(null),
QOEController=<MLQOEPingController: 0x115df0ef0>,
loadRetryPolicy=<MLDefaultLoadRetryPolicy: 0x28385b160>,
isLiveSource=False,
livePlayerConfig=(null),
windowedLiveConfig=(null),
metadataRelay=<MLHAMManifestlessMetadataCollector: 0x281551f80>,
delegate=<MLHAMPlayerItem: 0x122203240>,
latencyLogger=<YTWatchLatencyTickLogger: 0x2801ea200>,
watchEndpointUstreamerConfig=(null),
periodID=0,
firstRequestNumber=1,
cache=(null)