Using domain name to push stream to SRS, then forwarding to Alibaba Cloud CDN failed.

[langyastudio]

Background:

1. Built SRS media streaming service on ECS server.
   Domain name: srs.xxx.com
2. Created a streaming domain in Alibaba Cloud CDN Live Center.
   Domain name: cloud-push.xxx.com
3. Business requirement:
   Push local streams to SRS media streaming service (srs.xxx.com), and then forward them to Alibaba Cloud CDN (cloud-push.xxx.com) to achieve the demand for large-scale live broadcasting.
4. Version:
   Tested with version 3.0.156.

Problem:

1. When using the domain name srs.xxx.com, the SRS media streaming server reports forward-related errors, indicating that the forward operation has failed.
   rtmp://srs.xxx.com/live/stream?key=9aa98e26&token=aNc28YIy
   Problem:
2. When using an IP address, the forward operation is successful.
   rtmp://IP/live/stream?key=9aa98e26&token=aNc28YIy
   Problem:
3. Key Configuration
   For testing convenience, the push verification of Alibaba Cloud CDN has been disabled.

vhost __defaultVhost__ {
    enabled on;
    forward {
        enabled on;     
        destination cloud-push.xxx.com;
    }
}

Problem:
4. Error message for domain failure:

Originally posted by @langyastudio in #1202 (comment)

TRANS_BY_GPT3

[BradChan]

The same mistake

TRANS_BY_GPT3

[lingfengfushui]

I also encountered a similar problem. I tried several versions of 3.0, but it's the same: streaming with IP to SRS, then forwarding to other CDN domains works fine, and watching with VLC is normal. However, streaming with a domain to SRS, then forwarding to other CDN domains, the logs do not show any abnormalities, but VLC cannot open it. I contacted the technical personnel on the other side and they said they did not receive the stream.

TRANS_BY_GPT3

[langyastudio]

In addition, it is also important to improve the success rate and stability of the forward.

@liguocahng #1202 (comment)
The problem still exists (not reproducible every time):
Streaming to SRS, then forwarding to Alibaba Cloud server through configuration file, the online stream is not displayed on the Alibaba Cloud server, but the resource monitoring in the domain management shows resource flow, and the video cannot be played.

TRANS_BY_GPT3

[langyastudio]

@winlinvip, please pay attention to this issue.

TRANS_BY_GPT3

[liguocahng]

I solved this problem using 2.0 at that time, but 3.0 cannot push the stream.

TRANS_BY_GPT3

[langyastudio]

Thank you.
I am using version 3.0.156. Today, I contacted Alibaba Cloud technical support:

1. Forwarding to Alibaba Cloud - actual streaming success, but playback failure.
2. Alibaba Cloud technical staff feedback:
   The obtained IP is 127.0.0.1.
   The forward may carry the vhost parameter, asking me to remove it and try again.

TRANS_BY_GPT3

[liguocahng]

I asked the personnel from Alibaba Cloud to help me for two days. The result they gave seemed to indicate that there was a problem with the stream, as the bandwidth was detected but the stream couldn't be played. Later, I tried it myself and found that using version 2.0 for streaming worked. You can try streaming with version 2.0.

TRANS_BY_GPT3

[lingfengfushui]

I solved this problem using 2.0 at that time, but 3.0 cannot push the stream up.

Which version of 2.0 did you use? I tried several versions of 2.0, but it seems that neither using a domain name nor an IP address worked.

TRANS_BY_GPT3

[winlinvip]

I will see if I can reproduce it, it is possible that it failed due to the vhost.

TRANS_BY_GPT3

[winlinvip]

Dup to #1202

[winlinvip]

Fixed in SRS 5.0.1

[BenLocal]

@liguocahng Thank you
I am using version 3.0.156. Today, I contacted Alibaba Cloud technical support:

1. Forwarding to Alibaba Cloud - the actual push is successful, but playback fails
2. Alibaba Cloud technical personnel feedback
   The obtained IP is 127.0.0.1
   Forwarding may carry the vhost parameter, they asked me to remove it and try again.

I encountered the same error with version v3.0-r5. How was it resolved now?

TRANS_BY_GPT3

[langyastudio]

@BenLocal
Still waiting for the author to resolve this issue #1342.

TRANS_BY_GPT3

[MuffinK]

@liguocahng Thank you @BenLocal
I am using version 3.0.156. Today I contacted Alibaba Cloud technical support:

1. Forwarding to Alibaba Cloud - actual streaming is successful, but playback fails
2. Feedback from Alibaba Cloud's technical staff
   The IP obtained is 127.0.0.1
   Forwarding may carry vhost parameters, they asked me to remove and try again.

I encountered the same error with version v3.0-r5. May I know how it was resolved now?

You can try including the CDN domain as the vhost when pushing the stream.
For example:
rtmp://srs.xxx.com/live/stream?key=9aa98e26&token=aNc28YIy &vhost=cloud-push.xxx.com

TRANS_BY_GPT3