urldata: rename easy_conn to just conn

We use "conn" everywhere to be a pointer to the connection.

Introduces two functions that "attaches" and "detaches" the connection
to and from the transfer.

Going forward, we should favour using "data->conn" (since a transfer
always only has a single connection or none at all) to "conn->data"
(since a connection can have none, one or many transfers associated with
it and updating conn->data to be correct is error prone and a frequent
reason for internal issues).

Closes #3442
This commit is contained in:
Daniel Stenberg 2019-01-02 18:04:58 +01:00
parent 61faa0b420
commit ba243235ec
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15 changed files with 199 additions and 204 deletions

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@ -6,7 +6,7 @@
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2012 - 2016, Linus Nielsen Feltzing, <linus@haxx.se>
* Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -572,8 +572,6 @@ void Curl_conncache_close_all_connections(struct conncache *connc)
conn->data = connc->closure_handle;
sigpipe_ignore(conn->data, &pipe_st);
conn->data->easy_conn = NULL; /* clear the easy handle's connection
pointer */
/* This will remove the connection from the cache */
connclose(conn, "kill all");
(void)Curl_disconnect(connc->closure_handle, conn, FALSE);