Function gnrc_tcp_open

pub unsafe extern "C" fn gnrc_tcp_open(
    tcb: *mut gnrc_tcp_tcb_t,
    remote: *const gnrc_tcp_ep_t,
    local_port: u16,
) -> c_int

@brief Opens a connection.

@pre gnrc_tcp_tcb_init() must have been successfully called. @pre @p tcb must not be NULL @pre @p remote must not be NULL. @pre @p remote->port must not be 0.

@note Blocks until a connection was established or an error occurred.

@param[in,out] tcb TCB for this connection. @param[in] remote Remote endpoint to connect to. @param[in] local_port If zero or PORT_UNSPEC, the connections source port is randomly selected. If local_port is non-zero it is used as source port.

@return 0 on success. @return -EAFNOSUPPORT if @p remote address_family is not supported. @return -EINVAL if @p remote and @p tcb address_family do not match or @p target_addr is invalid. @return -EISCONN if @p tcb is already connected. @return -ENOMEM if there are no receive buffer left to use for @p tcb. @return -EADDRINUSE if @p local_port is already in use. @return -ETIMEDOUT if the connection attempt timed out. @return -ECONNREFUSED if the connection attempt was reset by the peer.