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TCP/IP Socket Connect to Remote Host:PortDemonstrates how to create a TCP/IP socket, connect to a remote host:port, and receive a "Hello World!" message.
// Needs #include <CkSocket.h> CkString strOut; CkSocket socket; bool success; success = socket.UnlockComponent("Anything for 30-day trial"); if (success != true) { strOut.append("Failed to unlock component\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Connect to port 5555 of localhost. // The string "localhost" is for testing on a single computer. // It would typically be replaced with an IP hostname, such // as "www.chilkatsoft.com". bool ssl; ssl = false; long maxWaitMillisec; maxWaitMillisec = 20000; success = socket.Connect("localhost",5555,ssl,maxWaitMillisec); if (success != true) { strOut.append(socket.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Set maximum timeouts for reading an writing (in millisec) socket.put_MaxReadIdleMs(10000); socket.put_MaxSendIdleMs(10000); // The server (in this example) is going to send a "Hello World!" // message. Read it: const char * receivedMsg; receivedMsg = socket.receiveString(); if (receivedMsg == 0 ) { strOut.append(socket.lastErrorText()); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); return; } // Close the connection with the server // Wait a max of 20 seconds (20000 millsec) socket.Close(20000); strOut.append(receivedMsg); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); |
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