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(C#) Socket Receive String Until Specific Byte Value is ReceivedDemonstrates the Chilkat Socket ReceiveStringUntilByte method.
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Socket sock = new Chilkat.Socket(); // -------------------------------------------------------------------- // This example uses the public TCP echo service at https://tcpbin.com/ // -------------------------------------------------------------------- bool useTls = false; int port = 4242; int maxWaitMs = 5000; bool success = sock.Connect("tcpbin.com",port,useTls,maxWaitMs); if (success == false) { Debug.WriteLine(sock.LastErrorText); return; } // Wait a max of 2 seconds for a response.. sock.MaxReadIdleMs = 2000; // Send some strings, each terminated by a 0 byte. sock.SendString("This is the 1st string"); sock.SendByte(0); sock.SendString("This is string number 2"); sock.SendByte(0); // The tcpbin.com echo server only echoes after receiving an LF (linefeed char) sock.SendByte(10); // Now let's receive what is echoed back.... // Receive each string and the NULL byte. // The call to ReceiveStringUntilByte will receive incoming data until the lookForByte is encountered. // The lookForByte is receive and discarded (it is not returned in the string) int lookForByte = 0; string s1 = sock.ReceiveStringUntilByte(lookForByte); if (sock.LastMethodSuccess == false) { Debug.WriteLine(sock.LastErrorText); return; } Debug.WriteLine(s1); string s2 = sock.ReceiveStringUntilByte(lookForByte); if (sock.LastMethodSuccess == false) { Debug.WriteLine(sock.LastErrorText); return; } Debug.WriteLine(s2); // The echo server will also echo back the final LF sock.ReceiveByte(true); maxWaitMs = 100; sock.Close(100); // Output: // This is the 1st string // This is string number 2 |
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