TCP 客户端有时会合并数据包

Question

在 Unity 应用程序中，我每秒通过 TCP 接收大约 160 个 JSON 对象。我下面的阅读代码似乎以这样的速度挣扎，并且有几次没有 processData 它们作为单个消息。当尝试创建一个 JSONObject` 而不是我得到这样的东西时

improper JSON formatting:right","data":{"type":"flex","gesture":"open","data":[0.11425240454677936,0.11582253631723596,0.0947054436987323,0]}}{"type":"right","data":{"type":"sensor","data":[0.98638916015625,-0.0802001953125,0.08880615234375,-0.11248779296875,null]}}{"type":"right","data":{"type":"flex","gesture":"open","data":[0.11192072282133489,0.11739301138594425,0.09271687795177729,0]}}{"type":"right","data":{"type":"sensor","data":[0.98638916015625,-0.0802001953125,0.08880615234375,-0.11248779296875,null]}}{"type":"right",

这是我的数据处理函数：

bool ProcessData()
{
    string temp = System.Text.Encoding.Default.GetString(readBuffer);
    //Debug.Log(string.Format("Client recv: '{0}'", temp));

    JSONObject obj = new JSONObject(temp);
}

这是我的 TCP 代码：

void connectToHub () {
    readBuffer = new byte[512];
    EndPoint endpoint;
    if (this.useUnixSocket == true) {
        endpoint = new UnixEndPoint(SOCKET_LOCATION);
    } else {
        endpoint = new IPEndPoint(this.ipAdress, this.port);
    }

    client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

    try {
        IAsyncResult result = client.BeginConnect(endpoint, 
                                    new AsyncCallback(this.EndConnect), 
                                    null);
        bool connectSuccess = result.AsyncWaitHandle.WaitOne(System.TimeSpan.FromSeconds(10));

        if (!connectSuccess){
            client.Close();
            Debug.LogError(string.Format("Client unable to connect. Failed"));
        }

    }
    catch(SystemException e) {
        Debug.LogError(string.Format("Client exception on beginconnect: {0}", e.Message));
    }

}

void EndConnect(IAsyncResult iar)
{
    client.EndConnect(iar);
    client.NoDelay = true;
    ReceiveData();
}


void ReceiveData()
{
    client.BeginReceive(readBuffer, 0, readBuffer.Length, SocketFlags.None, EndReceiveData, client);
}

void EndReceiveData(System.IAsyncResult iar)
{
    int numBytesReceived = client.EndReceive(iar);
    if (numBytesReceived > 0){
        this.ProcessData();

    }           
    // Continue receiving data
    ReceiveData();
}

Answer 1

在我看来，有时您在数据全部到达之前就开始处理数据。当您通过 TCP 接收到一些数据时，您正在调用 EndReceiveData。如果所有的数据都装进刚刚到达的数据包，你就没有问题。但是，如果数据大于数据包，那么在开始解析之前，您确实应该读取该 json 对象的所有数据包。

TCP 客户端有时会合并数据包

TCP Client sometimes merges data-packets

.net

c#

mono

tcp

unity-container