From 731eee27c3b5bbbf3e08267485b33a19d6462afc Mon Sep 17 00:00:00 2001
From: Philip Homburg <philip@cs.vu.nl>
Date: Fri, 30 Sep 2005 12:50:50 +0000
Subject: [PATCH] Nonblocking connect for TCP sockets.

---
 lib/ip/connect.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/lib/ip/connect.c b/lib/ip/connect.c
index 72f1a18cb..f1ae13d58 100644
--- a/lib/ip/connect.c
+++ b/lib/ip/connect.c
@@ -1,4 +1,5 @@
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/ioctl.h>
@@ -79,9 +80,21 @@ static int _tcp_connect(int socket, const struct sockaddr *address,
 	tcpconf.nwtc_remport= sinp->sin_port;
 
 	if (ioctl(socket, NWIOSTCPCONF, &tcpconf) == -1)
-		return -1;
+        {
+		/* Ignore EISCONN error. The NWIOTCPCONN ioctl will get the
+		 * right error.
+		 */
+		if (errno != EISCONN)
+			return -1;
+	}
 
-	tcpcl.nwtcl_flags= 0;
+	tcpcl.nwtcl_flags= TCF_DEFAULT;
+
+	r= fcntl(socket, F_GETFL);
+	if (r == 1)
+		return -1;
+	if (r & O_NONBLOCK)
+		tcpcl.nwtcl_flags |= TCF_ASYNCH;
 
 	r= ioctl(socket, NWIOTCPCONN, &tcpcl);
 	return r;
-- 
2.44.0