CLOSESOCKETFUNCTION: use the callback

Fix the return type of the callback to match close() and make use of it.

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/connect.c b/lib/connect.c
index 2802c5d61..2dcf122c1 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -1172,7 +1172,8 @@ curl_socket_t Curl_getconnectinfo(struct SessionHandle *data,
 int Curl_closesocket(struct connectdata *conn,
                      curl_socket_t sock)
 {
-  (void)conn;
-
-  return sclose(sock);
+  if(conn && conn->fclosesocket)
+    return conn->fclosesocket(conn->closesocket_client, sock);
+  else
+    return sclose(sock);
 }