hi, srt module drop packet.

[shenlei190810]

I have two ecs server, one in Beijing, China; and another in Frankfurt, Germany. I have test the ping rtt is about 200ms. I have deployed the srt server in the two ecs, ecs in Beijing as srt-client, and ecs in Frankfurt as srt-server. Now I send tcp data in beijing, and the srt-client trans it to srt packet , then proxy to srt-server, the srt-server trans the srt packet to tcp server.

as rtt is about 200ms, so I set the recv_latency = 800ms, as the below shows. srt { server { listen 4321; proxy_pass udp://127.0.0.1:20000; recv_latency 800ms; } }

but in fact there are still many packets are dropped because of receive timeout, as the below shows.

the str should be continuous numbers, but in fact there are too many lost by srt module.

[kaltura-hooks]

Hi @shenlei190810,

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Thank you in advance,

[erankor]

This stuff is handled by libsrt, not by this module... the only thing that may be related to this module is if you compiled in debug or something, and the load caused by the log messages make the thread unavailable to handle the received packets. I suggest you run this test with some other tool that supports SRT, e.g. ffmpeg. You can also try with the libsrt sendfile/recvfile examples, but they use file mode, which is very different.

[maxsharabayko]

Related libsrt issue https://github.com/Haivision/srt/issues/2249