/// <summary> /// See if the received packet can be processed and split it up into different ones. /// </summary> bool ProcessBuffer(int bytes) { if (mReceiveBuffer == null) { // Create a new packet buffer mReceiveBuffer = Buffer.Create(); mReceiveBuffer.BeginWriting(false).Write(mTemp, 0, bytes); mExpected = 0; mOffset = 0; } else { // Append this data to the end of the last used buffer mReceiveBuffer.BeginWriting(true).Write(mTemp, 0, bytes); } for (int available = mReceiveBuffer.size - mOffset; available >= 4;) { // Figure out the expected size of the packet if (mExpected == 0) { mExpected = mReceiveBuffer.PeekInt(mOffset); // "GET " -- HTTP GET request sent by a web browser if (mExpected == 542393671) { if (httpGetSupport) { if (stage == Stage.Verifying || stage == Stage.WebBrowser) { stage = Stage.WebBrowser; string request = Encoding.ASCII.GetString(mReceiveBuffer.buffer, mOffset, available); mReceiveBuffer.BeginPacket(Packet.RequestHTTPGet).Write(request); mReceiveBuffer.EndPacket(); mReceiveBuffer.BeginReading(4); lock (mIn) mIn.Enqueue(mReceiveBuffer); mReceiveBuffer = null; mExpected = 0; mOffset = 0; } return(true); } mReceiveBuffer.Recycle(); mReceiveBuffer = null; mExpected = 0; mOffset = 0; Disconnect(); return(false); } else if (mExpected < 0 || mExpected > 16777216) { #if UNITY_EDITOR UnityEngine.Debug.LogError("Malformed data packet: " + mOffset + ", " + available + " / " + mExpected); #else Tools.LogError("Malformed data packet: " + mOffset + ", " + available + " / " + mExpected); #endif mReceiveBuffer.Recycle(); mReceiveBuffer = null; mExpected = 0; mOffset = 0; Disconnect(); return(false); } } // The first 4 bytes of any packet always contain the number of bytes in that packet available -= 4; // If the entire packet is present if (available == mExpected) { // Reset the position to the beginning of the packet mReceiveBuffer.BeginReading(mOffset + 4); // This packet is now ready to be processed lock (mIn) mIn.Enqueue(mReceiveBuffer); mReceiveBuffer = null; mExpected = 0; mOffset = 0; break; } else if (available > mExpected) { // There is more than one packet. Extract this packet fully. int realSize = mExpected + 4; Buffer temp = Buffer.Create(); // Extract the packet and move past its size component BinaryWriter bw = temp.BeginWriting(false); bw.Write(mReceiveBuffer.buffer, mOffset, realSize); temp.BeginReading(4); // This packet is now ready to be processed lock (mIn) mIn.Enqueue(temp); // Skip this packet available -= mExpected; mOffset += realSize; mExpected = 0; } else { break; } } return(true); }
/// <summary> /// See if the received packet can be processed and split it up into different ones. /// </summary> bool ProcessBuffer(int bytes) { if (mReceiveBuffer == null) { // Create a new packet buffer mReceiveBuffer = Buffer.Create(); mReceiveBuffer.BeginWriting(false).Write(mTemp, 0, bytes); } else { // Append this data to the end of the last used buffer mReceiveBuffer.BeginWriting(true).Write(mTemp, 0, bytes); } for (int available = mReceiveBuffer.size - mOffset; available >= 4;) { // Figure out the expected size of the packet if (mExpected == 0) { mExpected = mReceiveBuffer.PeekInt(mOffset); if (mExpected < 0 || mExpected > 16777216) { Close(true); return(false); } } // The first 4 bytes of any packet always contain the number of bytes in that packet available -= 4; // If the entire packet is present if (available == mExpected) { // Reset the position to the beginning of the packet mReceiveBuffer.BeginReading(mOffset + 4); // This packet is now ready to be processed lock (mIn) mIn.Enqueue(mReceiveBuffer); mReceiveBuffer = null; mExpected = 0; mOffset = 0; break; } else if (available > mExpected) { // There is more than one packet. Extract this packet fully. int realSize = mExpected + 4; Buffer temp = Buffer.Create(); // Extract the packet and move past its size component temp.BeginWriting(false).Write(mReceiveBuffer.buffer, mOffset, realSize); temp.BeginReading(4); // This packet is now ready to be processed lock (mIn) mIn.Enqueue(temp); // Skip this packet available -= mExpected; mOffset += realSize; mExpected = 0; } else { break; } } return(true); }
/// <summary> /// See if the received packet can be processed and split it up into different ones. /// </summary> bool ProcessBuffer(byte[] bytes, int offset, int byteCount) { if (offset + byteCount > bytes.Length) { LogError("ProcessBuffer(" + bytes.Length + " bytes, offset " + offset + ", count " + byteCount); return(false); } if (mReceiveBuffer == null) { // Create a new packet buffer mReceiveBuffer = Buffer.Create(); mReceiveBuffer.BeginWriting(false).Write(bytes, offset, byteCount); mExpected = 0; mOffset = 0; } else { // Append this data to the end of the last used buffer mReceiveBuffer.BeginWriting(true).Write(bytes, offset, byteCount); } for (mAvailable = mReceiveBuffer.size - mOffset; mAvailable > 4;) { // Figure out the expected size of the packet if (mExpected == 0) { mExpected = mReceiveBuffer.PeekInt(mOffset); // "GET " -- HTTP GET request sent by a web browser if (mExpected == 542393671) { if (httpGetSupport) { if (stage == Stage.Verifying || stage == Stage.WebBrowser) { stage = Stage.WebBrowser; string request = Encoding.ASCII.GetString(mReceiveBuffer.buffer, mOffset, mAvailable); mReceiveBuffer.BeginPacket(Packet.RequestHTTPGet).Write(request); mReceiveBuffer.EndPacket(); mReceiveBuffer.BeginReading(4); lock (mIn) { mIn.Enqueue(mReceiveBuffer); mReceiveBuffer = null; mExpected = 0; mOffset = 0; } } return(true); } mReceiveBuffer.Recycle(); mReceiveBuffer = null; mExpected = 0; mOffset = 0; Disconnect(); return(false); } else if (mExpected < 0 || mExpected > 16777216) { #if UNITY_EDITOR LogError("Malformed data packet: " + mOffset + ", " + mAvailable + " / " + mExpected); var temp = new byte[mReceiveBuffer.size]; for (int i = 0; i < byteCount; ++i) { temp[i] = mReceiveBuffer.buffer[i]; } var fn = "error_" + lastReceivedTime + ".full"; Tools.WriteFile(fn, temp); Debug.Log("Packet saved as " + fn); #else LogError("Malformed data packet: " + mOffset + ", " + mAvailable + " / " + mExpected); #endif mReceiveBuffer.Recycle(); mReceiveBuffer = null; mExpected = 0; mOffset = 0; Disconnect(); return(false); } } // The first 4 bytes of any packet always contain the number of bytes in that packet mAvailable -= 4; // If the entire packet is present if (mAvailable == mExpected) { // Reset the position to the beginning of the packet mReceiveBuffer.BeginReading(mOffset + 4); // This packet is now ready to be processed lock (mIn) { mIn.Enqueue(mReceiveBuffer); mReceiveBuffer = null; mExpected = 0; mOffset = 0; } break; } else if (mAvailable > mExpected) { // There is more than one packet. Extract this packet fully. int realSize = mExpected + 4; var temp = Buffer.Create(); // Extract the packet and move past its size component var bw = temp.BeginWriting(); bw.Write(mReceiveBuffer.buffer, mOffset, realSize); temp.BeginReading(4); // This packet is now ready to be processed lock (mIn) { mIn.Enqueue(temp); // Skip this packet mAvailable -= mExpected; mOffset += realSize; mExpected = 0; } } else { break; } } return(true); }