bits.close: introduce connection close tracking

Make all code use connclose() and connkeep() when changing the "close
state" for a connection. These two macros take a string argument with an
explanation, and debug builds of curl will include that in the debug
output. Helps tracking connection re-use/close issues.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/url.c b/lib/url.c
index b0aade1bf..7d2592bf9 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -3590,7 +3590,7 @@ static struct connectdata *allocate_conn(struct SessionHandle *data)
   /* Default protocol-independent behavior doesn't support persistent
      connections, so we set this to force-close. Protocols that support
      this need to set this to FALSE in their "curl_do" functions. */
-  conn->bits.close = TRUE;
+  connclose(conn, "Default to force-close");
 
   /* Store creation time to help future close decision making */
   conn->created = Curl_tvnow();