Add redisConnectFd() and redisFreeKeepFd()

These allows for easier integration of hiredis with external
code that wants to manage its fds, say for instance in a pool.

Closes #223

1 files changed, 19 insertions, 0 deletions

diff --git a/hiredis.c b/hiredis.c
index beed8e9..dcb13a5 100644
--- a/hiredis.c
+++ b/hiredis.c
@@ -1010,6 +1010,13 @@ void redisFree(redisContext *c) {
     free(c);
 }
 
+int redisFreeKeepFd(redisContext *c) {
+	int fd = c->fd;
+	c->fd = -1;
+	redisFree(c);
+	return fd;
+}
+
 /* Connect to a Redis instance. On error the field error in the returned
  * context will be set to the return value of the error function.
  * When no set of reply functions is given, the default set will be used. */
@@ -1093,6 +1100,18 @@ redisContext *redisConnectUnixNonBlock(const char *path) {
     return c;
 }
 
+redisContext *redisConnectFd(int fd) {
+    redisContext *c;
+
+    c = redisContextInit();
+    if (c == NULL)
+        return NULL;
+
+    c->fd = fd;
+    c->flags |= REDIS_BLOCK | REDIS_CONNECTED;
+    return c;
+}
+
 /* Set read/write timeout on a blocking socket. */
 int redisSetTimeout(redisContext *c, const struct timeval tv) {
     if (c->flags & REDIS_BLOCK)