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Posted 11 Mar 2002

Multithreaded Non-blocking Socket Server and Client, Based on Synchronized Socket

, 11 Mar 2002
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Non-blocking socket class using synchronized socket.



Just derive a child CTestClient class from CSyncSocketWorker and override its virtual function ProcessData.

void CTestClient::ProcessData()
     const int nBufferSize = 8192;
    char szBuffer[nBufferSize];

    CFile file;
    file.Open(TEXT("recv.dat"), CFile::modeCreate | CFile::modeWrite);
    int nRead;

    DWORD dwStart = GetTickCount();
    while(nRead = Read(szBuffer, nBufferSize))
        file.Write(szBuffer, nRead);
            cout << "shuting down" << endl;

    cout << "Speed = " << double(file.GetLength()) / 
                  (double(GetTickCount() - dwStart) / 1000.0) / 1024 
         << "KB/s" << endl;


Same as client.

void CEchoWorker::ProcessData()
     const int nBufferSize = 4096;
    char* pBuffer = new char[nBufferSize];

    CFile file;
    file.Open(TEXT("testfile.dat"), CFile::modeRead);
    while(!IsShutingdown() && IsConnected())
        int nRead = file.Read(pBuffer, nBufferSize);
        if(nRead == 0)

        Write(pBuffer, nRead, FALSE);


    while(!IsSendBufferEmpty() && IsConnected())

    delete [] pBuffer;


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About the Author

Kevin Hua
Web Developer
China China
No Biography provided

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Comments and Discussions

GeneralClient data in the Server code Pin
John A. Rose19-Jun-07 18:32
memberJohn A. Rose19-Jun-07 18:32 
Questioncannot reach author. license ? Pin
Petar K. Shomov24-Nov-03 2:52
memberPetar K. Shomov24-Nov-03 2:52 
QuestionUDP? Pin
Amit Dey16-Nov-02 10:51
memberAmit Dey16-Nov-02 10:51 
GeneralBad links have been corrected Pin
Kevin Hua12-Mar-02 15:20
memberKevin Hua12-Mar-02 15:20 
GeneralSorry for broken links Pin
Kevin Hua12-Mar-02 15:00
memberKevin Hua12-Mar-02 15:00 
Hi, all
I am badly SORRY for the broken links that brought inconvenience to you.

This article is my first one posted on the CodeProject site. I Remember uploading the two Zip files, but maybe some critical steps was skipped, that caused broken links.

I would like to send the two Zip file to you, please send me a mail.

Thank you for reading my code and your comment is also expected.

Generalcan't download! Pin
Anonymous11-Mar-02 19:40
memberAnonymous11-Mar-02 19:40 

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