i/o timeout when client use ws to connect to server

[kuyagic]

I meet many io timeout when download large file
server use http and client connect to server with ws://server_ip:port
always failed to download after 5 seconds using curl

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  9  100M    9 9351k    0     0  1868k      0  0:00:54  0:00:05  0:00:49 1993k
curl: (18) transfer closed with 95281283 bytes remaining to read

client side log

local_server.go:254: Failed to read proxy http request to cachefly.cachefly.net:80 for reason:read tcp 127.0.0.1:1889->192.168.11.10:42608: i/o timeout

server side log

2018/03/06 14:49:07 remote.go:33: [7]Start handle stream:&{tcp cachefly.cachefly.net:80 5000 0 []} with comprresor:none
2018/03/06 14:49:07 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
2018/03/06 14:49:08 stream.go:221: [7]send window is ZERO
...many more same ZERO

[yinqiwen]

the send window is ZERO means the connection between your local machine & remote websocket server is too slow to send the file data.
and can u modify the line https://github.com/yinqiwen/gsnova/blob/master/local/local_server.go#L250 to large timeout value and retest again? seems this timeout is caused by this 5s timeout setting.

[kuyagic]

I think the speed 1993k/s is not slow.....