From: Pieter Noordhuis <pcnoordhuis@gmail.com>
Date: Mon, 6 Sep 2010 09:27:22 +0000 (+0200)
Subject: Fix bug where the client is not present in server.clients when free'ing it
X-Git-Url: https://git.saurik.com/redis.git/commitdiff_plain/106bd87a3ca7b90e1e6fb764398bbefccee3e4fa

Fix bug where the client is not present in server.clients when free'ing it

When creating the readable event results in an error (this happens when
the server hits OS limits), the client was not added to the list of
clients when freeClient was called. This results in an assertion error.
It is better to check this condition first and free the client
immediately when this condition occurs. Port of 00a90feb.
---

diff --git a/src/networking.c b/src/networking.c
index a39be7c4..104444f0 100644
--- a/src/networking.c
+++ b/src/networking.c
@@ -17,6 +17,14 @@ redisClient *createClient(int fd) {
     anetNonBlock(NULL,fd);
     anetTcpNoDelay(NULL,fd);
     if (!c) return NULL;
+    if (aeCreateFileEvent(server.el,fd,AE_READABLE,
+        readQueryFromClient, c) == AE_ERR)
+    {
+        close(fd);
+        zfree(c);
+        return NULL;
+    }
+
     selectDb(c,0);
     c->fd = fd;
     c->querybuf = sdsempty();
@@ -43,11 +51,6 @@ redisClient *createClient(int fd) {
     c->pubsub_patterns = listCreate();
     listSetFreeMethod(c->pubsub_patterns,decrRefCount);
     listSetMatchMethod(c->pubsub_patterns,listMatchObjects);
-    if (aeCreateFileEvent(server.el, c->fd, AE_READABLE,
-        readQueryFromClient, c) == AE_ERR) {
-        freeClient(c);
-        return NULL;
-    }
     listAddNodeTail(server.clients,c);
     initClientMultiState(c);
     return c;