static Header ReadHeader(Config config, byte[] buffer, bool opCodeContinuation = false) { (Connection conn, int maxMessageSize, bool expectMask, ConcurrentQueue <Message> queue, BufferPool bufferPool) = config; Stream stream = conn.stream; var header = new Header(); // read 2 header.offset = ReadHelper.Read(stream, buffer, header.offset, Constants.HeaderMinSize); // log after first blocking call Log.Verbose($"Message From {conn}"); if (MessageProcessor.NeedToReadShortLength(buffer)) { header.offset = ReadHelper.Read(stream, buffer, header.offset, Constants.ShortLength); } if (MessageProcessor.NeedToReadLongLength(buffer)) { header.offset = ReadHelper.Read(stream, buffer, header.offset, Constants.LongLength); } Log.DumpBuffer($"Raw Header", buffer, 0, header.offset); MessageProcessor.ValidateHeader(buffer, maxMessageSize, expectMask, opCodeContinuation); if (expectMask) { header.offset = ReadHelper.Read(stream, buffer, header.offset, Constants.MaskSize); } header.opcode = MessageProcessor.GetOpcode(buffer); header.payloadLength = MessageProcessor.GetPayloadLength(buffer); header.finished = MessageProcessor.Finished(buffer); Log.Verbose($"Header ln:{header.payloadLength} op:{header.opcode} mask:{expectMask}"); return(header); }
static void ReadOneMessage(Config config, byte[] buffer) { (Connection conn, int maxMessageSize, bool expectMask, ConcurrentQueue <Message> queue, BufferPool bufferPool) = config; Stream stream = conn.stream; Header header = ReadHeader(config, buffer); int msgOffset = header.offset; header.offset = ReadHelper.Read(stream, buffer, header.offset, header.payloadLength); if (header.finished) { switch (header.opcode) { case 2: HandleArrayMessage(config, buffer, msgOffset, header.payloadLength); break; case 8: HandleCloseMessage(config, buffer, msgOffset, header.payloadLength); break; } } else { // todo cache this to avoid allocations var fragments = new Queue <ArrayBuffer>(); fragments.Enqueue(CopyMessageToBuffer(bufferPool, expectMask, buffer, msgOffset, header.payloadLength)); int totalSize = header.payloadLength; while (!header.finished) { header = ReadHeader(config, buffer, opCodeContinuation: true); msgOffset = header.offset; header.offset = ReadHelper.Read(stream, buffer, header.offset, header.payloadLength); fragments.Enqueue(CopyMessageToBuffer(bufferPool, expectMask, buffer, msgOffset, header.payloadLength)); totalSize += header.payloadLength; MessageProcessor.ThrowIfMsgLengthTooLong(totalSize, maxMessageSize); } ArrayBuffer msg = bufferPool.Take(totalSize); msg.count = 0; while (fragments.Count > 0) { ArrayBuffer part = fragments.Dequeue(); part.CopyTo(msg.array, msg.count); msg.count += part.count; part.Release(); } // dump after mask off Log.DumpBuffer($"Message", msg); queue.Enqueue(new Message(conn.connId, msg)); } }