import vibe.core.core; import vibe.core.net; import core.time : msecs; import std.string : representation; void main() { import vibe.core.log; bool done = false; listenTCP(11375, (conn) { try { conn.write("foo".representation); conn.close(); } catch (Exception e) { assert(false, e.msg); } done = true; }); runTask({ auto conn = connectTCP("127.0.0.1", 11375); conn.close(); sleep(50.msecs); assert(done); exitEventLoop(); }); runEventLoop(); }