socat

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wikipedia:socat (2009)

Forward port 80 to localhost:8090 [1]

  • socat TCP-LISTEN:80,fork TCP:127.0.0.1:8090
  • socat TCP-LISTEN:80,fork,reuseaddr TCP:127.0.0.1:8090

Debugging:

  • socat -d -d TCP-LISTEN:80,fork TCP:127.0.0.1:8090

Logs connections (-d -d):

2019/05/13 04:24:30 socat[15433] N listening on AF=2 0.0.0.0:XX
2019/05/13 04:24:43 socat[15433] N accepting connection from AF=2 xx.99.12.xxx:62833 on AF=2 xxx.xxx.xxx.xxx:2244
2019/05/13 04:24:43 socat[15433] N forked off child process 15438
2019/05/13 04:24:43 socat[15433] N listening on AF=2 0.0.0.0:XX
2019/05/13 04:24:43 socat[15438] N opening connection to AF=2 1xx.253.51.xx:XX
2019/05/13 04:24:44 socat[15438] N successfully connected from local address AF=2 xxx.xxx.xxx.xxx:46596
2019/05/13 04:24:44 socat[15438] N starting data transfer loop with FDs [6,6] and [5,5]


Errors[edit]

socat TCP-LISTEN:8043,fork TCP:10.10.10.xx:443
2020/08/10 19:24:54 socat[1587199] E bind(5, {AF=2 0.0.0.0:8043}, 16): Address already in use
socat TCP-LISTEN:192.168.10.1:80,fork TCP:127.0.0.1:8090
2021/02/07 11:43:49 socat[26463] E TCP-LISTEN: wrong number of parameters (2 instead of 1)

Options[edit]

Related terms[edit]

See also[edit]

  • https://unix.stackexchange.com/a/293308
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