The level at which a socket option is defined.
Either SocketOption.SNDTIMEO or SocketOption.RCVTIMEO.
The timeout duration to set. Must not be negative.
SocketException if setting the options fails.
import std.datetime; import std.typecons; auto pair = socketPair(); scope(exit) foreach (s; pair) s.close(); // Set a receive timeout, and then wait at one end of // the socket pair, knowing that no data will arrive. pair[0].setOption(SocketOptionLevel.SOCKET, SocketOption.RCVTIMEO, dur!"seconds"(1)); auto sw = StopWatch(Yes.autoStart); ubyte[1] buffer; pair[0].receive(buffer); writefln("Waited %s ms until the socket timed out.", sw.peek.msecs);
Sets a timeout (duration) option, i.e. SocketOption.SNDTIMEO or RCVTIMEO. Zero indicates no timeout.
In a typical application, you might also want to consider using a non-blocking socket instead of setting a timeout on a blocking one.
Note: While the receive timeout setting is generally quite accurate on *nix systems even for smaller durations, there are two issues to be aware of on Windows: First, although undocumented, the effective timeout duration seems to be the one set on the socket plus half a second. setOption() tries to compensate for that, but still, timeouts under 500ms are not possible on Windows. Second, be aware that the actual amount of time spent until a blocking call returns randomly varies on the order of 10ms.