C++
C++
Wait for a Socket to Become Readable
See more Socket/SSL/TLS Examples
Demonstrates Socket.SelectForReading, which waits for read-ready activity on the socket, or on any contained socket when the object is a socket set. It returns 1 if ready, 0 on timeout, or -1 on error.
Background. A timeoutMs of 0 performs a nonblocking poll. With a socket set, this monitors many connections at once for readability.
Chilkat C++ Downloads
#include <CkSocket.h>
void ChilkatSample(void)
{
bool success = false;
CkSocket socket;
// Connect to the server using TLS.
bool bTls = true;
int maxWaitMs = 5000;
success = socket.Connect("example.com",5000,bTls,maxWaitMs);
if (success == false) {
std::cout << socket.lastErrorText() << "\r\n";
return;
}
// Wait up to 5 seconds for read-ready activity on the socket (or, for a socket set, on any contained
// socket). Returns 1 if ready, 0 on timeout, or -1 on error.
int ready = socket.SelectForReading(5000);
if (ready < 0) {
std::cout << socket.lastErrorText() << "\r\n";
return;
}
if (ready != 1) {
std::cout << "No data became available before the timeout." << "\r\n";
return;
}
std::cout << "The socket has data ready to read." << "\r\n";
}