Merge pull request #382 from CopernicaMarketingSoftware/retry-interrupt

retry poll when interrupted by a signal

src/linux_tcp/tcpresolver.h

@@ -129,8 +129,17 @@ class TcpResolver : public TcpExtState
  fd.events = POLLOUT;
  fd.revents = 0;
 
- // perform the poll, with a very long time to allow the event to occur
- int ret = poll(&fd, 1, _timeout * 1000);
+ // the return code
+ int ret = 0;
+
+ // keep looping until we get a 'final' result
+ do
+ {
+ // perform the poll, with a very long time to allow the event to occur
+ ret = poll(&fd, 1, _timeout * 1000);
+
+ // we want to retry if the call was interrupted by a signal
+ } while (ret == -1 && errno == EINTR);
 
  // log the error for the time being
  if (ret == 0) _error = "connection timed out";