---title:"mg_send_websocket_handshake()"decl_name:"mg_send_websocket_handshake"symbol_kind:"func"signature:|void mg_send_websocket_handshake(struct mg_connection *nc, const char *uri,const char *extra_headers);---Send websocket handshake to the server.`nc` must be a valid connection, connected to a server. `uri` is an URIto fetch, extra_headers` is extra HTTP headers to send or `NULL`.This function is intended to be used by websocket client.Note that the Host header is mandatory in HTTP/1.1 and must beincluded in `extra_headers`. `mg_send_websocket_handshake2` offersa better API for that.Deprecated in favour of `mg_send_websocket_handshake2`