--source-address option bug

[TheGr33k]

youtube-dl -g -vC --source-address 209.55.52.7 https://www.youtube.com/watch?v=duKL2dAJN6I
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-g', '-vC', '--source-address', '209.55.52.7', 'https://www.youtube.com/watch?v=duKL2dAJN6I']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.01.10.2
[debug] Python version 2.6.6 - Linux-2.6.32-504.3.3.el6.x86_64-x86_64-with-centos-6.6-Final
[debug] exe versions: none
[debug] Proxy map: {}
[debug] Public IP address: 216.193.172.196
https://r4---sn-a5m7zne6.googlevideo.com/videoplayback?upn=m3IbFnNpT5A&sparams=dur%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Cmime%2Cmm%2Cms%2Cmv%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire&requiressl=yes&key=yt5&itag=22&initcwndbps=2651250&mime=video%2Fmp4&fexp=900718%2C912133%2C913446%2C922243%2C927622%2C932404%2C941004%2C943917%2C947209%2C947218%2C947225%2C948124%2C950500%2C952302%2C952605%2C952901%2C955301%2C957103%2C957105%2C957201%2C957400%2C959701&dur=772.295&ms=au&id=o-AM7atmFgCrJpvx-mUugAJg8oCootzt83QJuhfnGoT6RF&mv=m&mt=1420949294&sver=3&signature=BDC585BAE73BD051CEF02E20FE902F0DF1D39F30.7ECD8D6415969A3E9448FDB155F994E82E6B9C3D&expire=1420970930&ipbits=0&ratebypass=yes&ip=216.193.172.196&source=youtube&mm=31

The ip address specified in the --source-address (i.e 209.55.52.7 ) should have been used to generate the url.Instead my main server ip is being used (216.193.172.196).

[phihag]

Thank you for the report. Unfortunately, I cannot reproduce this issue. It works fine for me, even when using the precise OS and Python version that you are using.

To be able to diagnose this problem, we therefore need more information:

• Is --source-address being in effect at all? Try youtube-dl -Cv --source-address 1.2.3.4. If that throws an error along the lines of [Errno 99] Cannot assign requested address, then the fault is most likely in the OS/firewall configuration. If it does not, then it's likely that the bug is in youtube-dl.
• Can you upload the output of strace somewhere? I.e. the file strace.log generated by strace -o strace.log -f youtube-dl -Cv --source-address 209.55.52.7. By looking at it (in particular the bind calls) we can determine whether your OS was correctly advised to use the source address.
• With a pcap dump we can see whether the packets leave the OS with the correct address. Can you upload the output file log.pcap you get when you run dumpcap -a duration:5 -f 'host 95.143.172.170' -w log.pcap & youtube-dl -Cv --source-address 209.55.52.7 ?

[TheGr33k]

1.Source address seems to be in effect (as there is no " cannot assign requested address error").Moreover i use bind-ip feature in other commandline tools and there is no issue so its very unlikely that its related to server

youtube-dl -Cv --source-address 209.55.52.7
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-Cv', '--source-address', '209.95.42.7']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.01.10.2
[debug] Python version 2.6.6 - Linux-2.6.32-504.3.3.el6.x86_64-x86_64-with-centos-6.6-Final
[debug] exe versions: none
[debug] Proxy map: {}
[debug] Public IP address: 216.193.172.196

You want me to provide a url to youtube-dl while given these output.Also note that i modified the IPs in report for privacy reasons.If you need true server IPs you can find me on skype

[phihag]

In a private debugging session, we found out that this is a firewall/network problem unrelated to youtube-dl.

[bubbleguuum]

What was the exact firewall issue and fix ? I have somewhat the same issue.

[phihag]

@bubbleguuum That's extremely unlikely. You may be affected by #4696 though. Without the required information for bug reports, we can't really say though.

[bubbleguuum]

Looks like my Ubuntu install doesn't allow binding to sources addresses:

curl --interface 209.55.52.7 yt-dl.org/ip
curl: (45) bind failed with errno 99: Cannot assign requested address

But youtube-dl doesn't complain and silently fail (real public ip redacted and replaced with 1.2.3.4):

./youtube-dl -g -Cv --source-address 209.55.52.7 https://www.youtube.com/watch?v=beszG5A7LoA
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-g', '-Cv', '--source-address', '209.55.52.7', 'https://www.youtube.com/watch?v=beszG5A7LoA']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.01.16
[debug] Python version 2.7.3 - Linux-3.2.0-70-generic-x86_64-with-Ubuntu-12.04-precise
[debug] exe versions: avconv 0.10.12-7, avprobe 0.10.12-7, ffmpeg 0.10.12-7, ffprobe 0.10.12-7
[debug] Proxy map: {}
[debug] Public IP address: 1.2.3.4
https://r5---sn-u2oxu-f5fs.googlevideo.com/videoplayback?sver=3&sparams=dur%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Cmime%2Cmm%2Cms%2Cmv%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire&signature=29F47A9D18E4123F3B888FE6EE2281D28AD30742.4FE1C35B0B81EACBB37288C2A2770D754A778EA6&itag=18&upn=71KBV-JaePg&mime=video%2Fmp4&key=yt5&requiressl=yes&initcwndbps=1451250&fexp=900718%2C907263%2C912325%2C927622%2C941004%2C942622%2C943917%2C945085%2C947209%2C947225%2C948124%2C948529%2C952302%2C952605%2C952901%2C955301%2C957103%2C957105%2C957201%2C959701%2C962714&source=youtube&mt=1421491448&ratebypass=yes&dur=114.544&id=o-ADahUgjMvBE4-esDUy8agNgpEA9oCvU29G5ac0sVUrCI&mm=31&expire=1421513128&ms=au&ipbits=0&pl=24&mv=m&ip=1.2.3.4

[bubbleguuum]

Hmmm it looks like I wrongly thought you could specify any ip for --source-address. But this is limited to any valid address of the machine on which youtube-dl runs. Which when you think about it, makes sense.