suppressing socketStream warnings during shutdown initiated by SIGINT

source/eventcore/drivers/posix/driver.d

@@ -21,6 +21,7 @@ import eventcore.internal.utils;
 
 import core.time : MonoTime;
 import std.algorithm.comparison : among, min, max;
+import std.format : format;
 
 version (Posix) {
 	package alias sock_t = int;
@@ -116,14 +117,23 @@ final class PosixEventDriver(Loop : PosixEventLoop) : EventDriver {
 			return thname.length ? thname : "unknown";
 		}
 
-		if (m_loop.m_handleCount > 0) {
+		string leaking_handle_desc;
+		foreach (id, ref s; m_loop.m_fds) {
+			if (!s.specific.hasType!(typeof(null)) && !(s.common.flags & FDFlags.internal) &&
+			   (!s.specific.hasType!(StreamSocketSlot) || s.streamSocket.state == ConnectionState.connected))
+					try {
+						leaking_handle_desc ~= format!"   FD %s (%s)\n"(id, s.specific.kind);
+					} catch (Exception ex) { print("exception happened in Driver.dispose() during formatting"); }
+		}
+
+		if(leaking_handle_desc.length) {
 			print("Warning (thread: %s): leaking eventcore driver because there are still active handles", getThreadName());
-			foreach (id, ref s; m_loop.m_fds)
-				if (!s.specific.hasType!(typeof(null)) && !(s.common.flags & FDFlags.internal))
-					print("   FD %s (%s)", id, s.specific.kind);
-			return false;
+			print(leaking_handle_desc);
 		}
 
+		if (m_loop.m_handleCount > 0)
+			return false;
+
 		m_processes.dispose();
 		m_files.dispose();
 		m_dns.dispose();