diff --git a/drivers/unix/stream_peer_tcp_posix.cpp b/drivers/unix/stream_peer_tcp_posix.cpp
index b1636abd69..19f1ed4b34 100644
--- a/drivers/unix/stream_peer_tcp_posix.cpp
+++ b/drivers/unix/stream_peer_tcp_posix.cpp
@@ -107,7 +107,12 @@ Error StreamPeerTCPPosix::_poll_connection(bool p_block) const {
 			return OK;
 		};
 
-		return OK;
+		if (errno == EINPROGRESS || errno == EALREADY) {
+			return OK;
+		}
+
+		status = STATUS_ERROR;
+		return ERR_CONNECTION_ERROR;
 	} else {
 
 		status = STATUS_CONNECTED;
diff --git a/platform/windows/stream_peer_winsock.cpp b/platform/windows/stream_peer_winsock.cpp
index 44c17c73e5..48dd37e9c4 100644
--- a/platform/windows/stream_peer_winsock.cpp
+++ b/platform/windows/stream_peer_winsock.cpp
@@ -98,7 +98,12 @@ Error StreamPeerWinsock::_poll_connection(bool p_block) const {
 			return OK;
 		};
 
-		return OK;
+		if (errno == WSAEINPROGRESS || errno == WSAEALREADY) {
+			return OK;
+		}
+
+		status = STATUS_ERROR;
+		return ERR_CONNECTION_ERROR;
 	} else {
 
 		status = STATUS_CONNECTED;