Convenience macro for libssh2_channel_direct_tcpip_ex(3) calls
#include <libssh2.h>
LIBSSH2_CHANNEL * libssh2_channel_direct_tcpip(LIBSSH2_SESSION *session, const char *host, int port);
This is a macro defined in a public libssh2 header file that is using the underlying function libssh2_channel_direct_tcpip_ex(3).