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TCP Proxy

Installation

go install github.com/xpetit/tcp_proxy@latest

Usage

tcp_proxy REMOTE_ADDRESS [LOCAL_ADDRESS]

Examples

tcp_proxy postgres-host.lan:5432                        listens to 127.0.0.1:5432
tcp_proxy postgres-host.lan:5432 :8888                  listens to localhost:8888
tcp_proxy postgres-host.lan:5432 [::1]:8888             listens to [::1]:8888

Performance

user@host:~$ socat /dev/null,ignoreeof tcp-listen:1234,fork,reuseaddr &
user@host:~$ tcp_proxy :1234 :2345 &
Forwarding from [::]:2345 to :1234
user@host:~$ dd if=/dev/zero status=progress bs=1M | netcat 127.0.0.1 2345
9458155520 bytes (9.5 GB, 8.8 GiB) copied, 7 s, 1.4 GB/s^C
9464+0 records in
9463+0 records out
9922674688 bytes (9.9 GB, 9.2 GiB) copied, 7.34455 s, 1.4 GB/s
user@host:~$ kill $(jobs -p)