url: provide dead_connection flag in Curl_handler::disconnect

It helps to prevent a hangup with some FTP servers in case idle session
timeout has exceeded.  But it may be useful also for other protocols
that send any quit message on disconnect.  Currently used by FTP, POP3,
IMAP and SMTP.

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/multi.c b/lib/multi.c
index b57724e62..7be479bd4 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -1634,7 +1634,8 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
         }
 
         if(disconnect_conn) {
-          Curl_disconnect(easy->easy_conn); /* disconnect properly */
+          /* disconnect properly */
+          Curl_disconnect(easy->easy_conn, /* dead_connection */ FALSE);
 
           /* This is where we make sure that the easy_conn pointer is reset.
              We don't have to do this in every case block above where a
@@ -1759,7 +1760,7 @@ CURLMcode curl_multi_cleanup(CURLM *multi_handle)
     for(i=0; i< multi->connc->num; i++) {
       if(multi->connc->connects[i] &&
          multi->connc->connects[i]->protocol & PROT_CLOSEACTION) {
-        Curl_disconnect(multi->connc->connects[i]);
+        Curl_disconnect(multi->connc->connects[i], /* dead_connection */ FALSE);
         multi->connc->connects[i] = NULL;
       }
     }
@@ -2665,7 +2666,7 @@ static void multi_connc_remove_handle(struct Curl_multi *multi,
           data->state.shared_conn = multi;
         else {
           /* out of memory - so much for graceful shutdown */
-          Curl_disconnect(conn);
+          Curl_disconnect(conn, /* dead_connection */ FALSE);
           multi->connc->connects[i] = NULL;
         }
       }