Emscripten handleMessage -- String to Uint8Array convertion -- library_sockfs.js

handlemessage_only_library_sockfs.js

        function handleMessage(data) {
          
          if( typeof data == 'string' ) {
            var strUtf8 = unescape( encodeURIComponent( data ) );
            var ab = new Uint8Array( strUtf8.length );
            var le = strUtf8.length;
            for ( var i = 0; i < le; i++ ) {
              ab[i] = strUtf8.charCodeAt(i);
            }
            data = ab;
          } else {
            data = new Uint8Array(data);  // make a typed array view on the array buffer
          }

          // console.log(data);

#if SOCKET_DEBUG
          Module.print('websocket handle message (' + data.byteLength + ' bytes): ' + [Array.prototype.slice.call(data)]);
#endif

          // if this is the port message, override the peer's port with it
          var wasfirst = first;
          first = false;
          if (wasfirst &&
              data.length === 10 &&
              data[0] === 255 && data[1] === 255 && data[2] === 255 && data[3] === 255 &&
              data[4] === 'p'.charCodeAt(0) && data[5] === 'o'.charCodeAt(0) && data[6] === 'r'.charCodeAt(0) && data[7] === 't'.charCodeAt(0)) {
            // update the peer's port and it's key in the peer map
            var newport = ((data[8] << 8) | data[9]);
            SOCKFS.websocket_sock_ops.removePeer(sock, peer);
            peer.port = newport;
            SOCKFS.websocket_sock_ops.addPeer(sock, peer);
            return;
          }

          sock.recv_queue.push({ addr: peer.addr, port: peer.port, data: data });
          Module['websocket'].emit('message', sock.stream.fd);
        };