07-18-2012
Drops even when busy, or only when idle?
Putting settings into /proc/ for keepalives isn't too great an idea since it will apply to
all your connections, even ones which don't need it, increasing your bandwidth a lot. Getting the right combination of settings to do what you actually want can be tricky, too.
I usually use
libkeepalive when I need to connect to something with obnoxious timeouts. It can be applied to a single program, works for anything(intercepting
socket calls to impose default keepalive settings when a program creates a TCP socket) and is relatively easy to configure.
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LEARN ABOUT DEBIAN
libssh2_channel_direct_tcpip_ex
libssh2_channel_direct_tcpip_ex(3) libssh2 manual libssh2_channel_direct_tcpip_ex(3)
NAME
libssh2_channel_direct_tcpip_ex - Tunnel a TCP connection through an SSH session
SYNOPSIS
#include <libssh2.h>
LIBSSH2_CHANNEL * libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, const char *host, int port, const char *shost, int sport);
LIBSSH2_CHANNEL * libssh2_channel_direct_tcpip(LIBSSH2_SESSION *session, const char *host, int port);
DESCRIPTION
session - Session instance as returned by libssh2_session_init_ex(3)
host - Third party host to connect to using the SSH host as a proxy.
port - Port on third party host to connect to.
shost - Host to tell the SSH server the connection originated on.
sport - Port to tell the SSH server the connection originated from.
Tunnel a TCP/IP connection through the SSH transport via the remote host to a third party. Communication from the client to the SSH server
remains encrypted, communication from the server to the 3rd party host travels in cleartext.
RETURN VALUE
Pointer to a newly allocated LIBSSH2_CHANNEL instance, or NULL on errors.
ERRORS
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.
SEE ALSO
libssh2_session_init_ex(3)
libssh2 0.15 1 Jun 2007 libssh2_channel_direct_tcpip_ex(3)