Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
#include <sys/socket.h>
#include <sys/un.h>
#include <netdb.h>
+#include <poll.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
usock_set_flags(sock, type);
return sock;
}
+
+int usock_wait_ready(int fd, int msecs) {
+ struct pollfd fds[1];
+ int res;
+
+ fds[0].fd = fd;
+ fds[0].events = POLLOUT;
+
+ res = poll(fds, 1, msecs);
+ if (res < 0) {
+ return errno;
+ } else if (res == 0) {
+ return -ETIMEDOUT;
+ } else {
+ int err = 0;
+ socklen_t optlen = sizeof(err);
+
+ res = getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &optlen);
+ if (res)
+ return errno;
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
const char *usock_port(int port);
int usock(int type, const char *host, const char *service);
+/**
+ * Wait for a socket to become ready.
+ *
+ * This may be useful for users of USOCK_NONBLOCK to wait (with a timeout)
+ * for a socket.
+ *
+ * @param fd file descriptor of socket
+ * @param msecs timeout in microseconds
+ */
+int usock_wait_ready(int fd, int msecs);
+
#endif /* USOCK_H_ */