TCP Server. TCP Server class. Listens to connections on a port and returns a [StreamPeerTCP] when got a connection. Return [code]true[/code] if a connection is available for taking. Listen on the "port" binding to "bind_address". If "bind_address" is set as "*" (default), the server will listen on all available addresses (both IPv4 and IPv6). If "bind_address" is set as "0.0.0.0" (for IPv4) or "::" (for IPv6), the server will listen on all available addresses matching that IP type. If "bind_address" is set to any valid address (e.g. "192.168.1.101", "::1", etc), the server will only listen on the interface with that addresses (or fail if no interface with the given address exists). Stop listening. If a connection is available, return a StreamPeerTCP with the connection/