http: implement separate timeouts for read/write/connect phase

This patch allows to change timeout for next events read/write/connect
separatelly, using new API:

- client:
  evhttp_connection_set_connect_timeout_tv() -- for connect
  evhttp_connection_set_read_timeout_tv()    -- for read
  evhttp_connection_set_write_timeout_tv()   -- for write

- server:
  evhttp_set_read_timeout_tv()  -- for read
  evhttp_set_write_timeout_tv() -- for write

It also changes a logic a little, before there was next fallbacks which
does not handled in new API:
- HTTP_CONNECT_TIMEOUT
- HTTP_WRITE_TIMEOUT
- HTTP_READ_TIMEOUT

And introduce another internal flag (EVHTTP_CON_TIMEOUT_ADJUSTED) that
will be used in evrpc, which adjust evhttp_connection timeout only if it
is not default.

Fixes: #692
Fixes: #715

1 files changed, 1 insertions, 1 deletions

diff --git a/evrpc.c b/evrpc.c
index 68fa1b90..3b5260fc 100644
--- a/evrpc.c
+++ b/evrpc.c
@@ -593,7 +593,7 @@ evrpc_pool_add_connection(struct evrpc_pool *pool,
 	 * unless a timeout was specifically set for a connection,
 	 * the connection inherits the timeout from the pool.
 	 */
-	if (!evutil_timerisset(&connection->timeout))
+	if (!(connection->flags & EVHTTP_CON_TIMEOUT_ADJUSTED))
 		evhttp_connection_set_timeout(connection, pool->timeout);
 
 	/*