Made connect functions return NULL on alloc failures.

Updated documentation and examples accordingly.

1 files changed, 16 insertions, 4 deletions

diff --git a/async.c b/async.c
index f65f869..b302d82 100644
--- a/async.c
+++ b/async.c
@@ -142,15 +142,27 @@ static void __redisAsyncCopyError(redisAsyncContext *ac) {
 }
 
 redisAsyncContext *redisAsyncConnect(const char *ip, int port) {
-    redisContext *c = redisConnectNonBlock(ip,port);
-    redisAsyncContext *ac = redisAsyncInitialize(c);
+    redisContext *c;
+    redisAsyncContext *ac;
+
+    c = redisConnectNonBlock(ip,port);
+    if (c == NULL)
+        return NULL;
+
+    ac = redisAsyncInitialize(c);
     __redisAsyncCopyError(ac);
     return ac;
 }
 
 redisAsyncContext *redisAsyncConnectUnix(const char *path) {
-    redisContext *c = redisConnectUnixNonBlock(path);
-    redisAsyncContext *ac = redisAsyncInitialize(c);
+    redisContext *c;
+    redisAsyncContext *ac;
+
+    c = redisConnectUnixNonBlock(path);
+    if (c == NULL)
+        return NULL;
+
+    ac = redisAsyncInitialize(c);
     __redisAsyncCopyError(ac);
     return ac;
 }