From a79064ce99ad1342658a9391fca6d945df7974bb Mon Sep 17 00:00:00 2001
From: Andy Green <andy.green@linaro.org>
Date: Mon, 22 Oct 2012 12:29:57 +0100
Subject: [PATCH] add context construction option to skip server hostname
 lookup

Signed-off-by: Andy Green <andy.green@linaro.org>
---
 lib/libwebsockets.c        | 54 ++++++++++++++++++++++++++--------------------
 lib/libwebsockets.h        |  1 +
 libwebsockets-api-doc.html |  3 +++
 3 files changed, 35 insertions(+), 23 deletions(-)

diff --git a/lib/libwebsockets.c b/lib/libwebsockets.c
index ca41b04..9912aa5 100644
--- a/lib/libwebsockets.c
+++ b/lib/libwebsockets.c
@@ -2596,34 +2596,42 @@ libwebsocket_create_context(int port, const char *interf,
 	context->ssl_client_ctx = NULL;
 	openssl_websocket_private_data_index = 0;
 #endif
-	/* find canonical hostname */
 
-	hostname[(sizeof hostname) - 1] = '\0';
-	memset(&sa, 0, sizeof(sa));
-	sa.sa_family = AF_INET;
-	sa.sa_data[(sizeof sa.sa_data) - 1] = '\0';
-	gethostname(hostname, (sizeof hostname) - 1);
+	if (options & LWS_SERVER_OPTION_SKIP_SERVER_CANONICAL_NAME) {
 
-	n = 0;
+		strcpy(context->canonical_hostname, "unknown");
 
-	if (strlen(hostname) < sizeof(sa.sa_data) - 1) {	
-		strcpy(sa.sa_data, hostname);
-//		fprintf(stderr, "my host name is %s\n", sa.sa_data);
-		n = getnameinfo(&sa, sizeof(sa), hostname,
-			(sizeof hostname) - 1, NULL, 0, 0);
-	}
+	} else {
 
-	if (!n) {
-		strncpy(context->canonical_hostname, hostname,
-					sizeof context->canonical_hostname - 1);
-		context->canonical_hostname[
-				sizeof context->canonical_hostname - 1] = '\0';
-	} else
-		strncpy(context->canonical_hostname, hostname,
-					sizeof context->canonical_hostname - 1);
+		/* find canonical hostname */
+
+		hostname[(sizeof hostname) - 1] = '\0';
+		memset(&sa, 0, sizeof(sa));
+		sa.sa_family = AF_INET;
+		sa.sa_data[(sizeof sa.sa_data) - 1] = '\0';
+		gethostname(hostname, (sizeof hostname) - 1);
+
+		n = 0;
+
+		if (strlen(hostname) < sizeof(sa.sa_data) - 1) {	
+			strcpy(sa.sa_data, hostname);
+	//		fprintf(stderr, "my host name is %s\n", sa.sa_data);
+			n = getnameinfo(&sa, sizeof(sa), hostname,
+				(sizeof hostname) - 1, NULL, 0, 0);
+		}
 
-//	fprintf(stderr, "context->canonical_hostname = %s\n",
-//						context->canonical_hostname);
+		if (!n) {
+			strncpy(context->canonical_hostname, hostname,
+						sizeof context->canonical_hostname - 1);
+			context->canonical_hostname[
+					sizeof context->canonical_hostname - 1] = '\0';
+		} else
+			strncpy(context->canonical_hostname, hostname,
+						sizeof context->canonical_hostname - 1);
+
+	//	fprintf(stderr, "context->canonical_hostname = %s\n",
+	//						context->canonical_hostname);
+	}
 
 	/* split the proxy ads:port if given */
 
diff --git a/lib/libwebsockets.h b/lib/libwebsockets.h
index 719b3cb..d0e96af 100644
--- a/lib/libwebsockets.h
+++ b/lib/libwebsockets.h
@@ -65,6 +65,7 @@ typedef int ssize_t;
 enum libwebsocket_context_options {
 	LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK = 1,
 	LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT = 2,
+	LWS_SERVER_OPTION_SKIP_SERVER_CANONICAL_NAME = 4,
 };
 
 enum libwebsocket_callback_reasons {
diff --git a/libwebsockets-api-doc.html b/libwebsockets-api-doc.html
index 789871b..e908d14 100644
--- a/libwebsockets-api-doc.html
+++ b/libwebsockets-api-doc.html
@@ -258,6 +258,9 @@ else ignored
 <dd>user id to change to after setting listen socket, or -1.
 <dt><b>options</b>
 <dd>0, or LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK
+<dt><b>user</b>
+<dd>optional user pointer that can be recovered via the context
+pointer using libwebsocket_context_user 
 </dl>
 <h3>Description</h3>
 <blockquote>
-- 
2.7.4