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conn_maxage: move the check to prune_dead_connections()

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... and avoid the locking issue.

Reported-by: Kunal Ekawde
Fixes #4029
Closes #4032
This commit is contained in:
Daniel Stenberg 2019-06-16 23:25:38 +02:00
parent 40259ca655
commit 755083d00d
No known key found for this signature in database
GPG Key ID: 5CC908FDB71E12C2
1 changed files with 25 additions and 27 deletions
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52
lib/url.c
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@ -881,6 +881,26 @@ proxy_info_matches(const struct proxy_info* data,
#define proxy_info_matches(x,y) FALSE
#endif
/* A connection has to have been idle for a shorter time than 'maxage_conn' to
be subject for reuse. The success rate is just too low after this. */
static bool conn_maxage(struct Curl_easy *data,
struct connectdata *conn,
struct curltime now)
{
if(!conn->data) {
timediff_t idletime = Curl_timediff(now, conn->lastused);
idletime /= 1000; /* integer seconds is fine */
if(idletime > data->set.maxage_conn) {
infof(data, "Too old connection (%ld seconds), disconnect it\n",
idletime);
return TRUE;
}
}
return FALSE;
}
/*
* This function checks if the given connection is dead and extracts it from
* the connection cache if so.
@ -897,7 +917,11 @@ static bool extract_if_dead(struct connectdata *conn,
/* The check for a dead socket makes sense only if the connection isn't in
use */
bool dead;
if(conn->handler->connection_check) {
struct curltime now = Curl_now();
if(conn_maxage(data, conn, now)) {
dead = TRUE;
}
else if(conn->handler->connection_check) {
/* The protocol has a special method for checking the state of the
connection. Use it to check if the connection is dead. */
unsigned int state;
@ -964,25 +988,6 @@ static void prune_dead_connections(struct Curl_easy *data)
}
}
/* A connection has to have been idle for a shorter time than 'maxage_conn' to
be subject for reuse. The success rate is just too low after this. */
static bool conn_maxage(struct Curl_easy *data,
struct connectdata *conn,
struct curltime now)
{
if(!conn->data) {
timediff_t idletime = Curl_timediff(now, conn->lastused);
idletime /= 1000; /* integer seconds is fine */
if(idletime > data->set.maxage_conn) {
infof(data, "Too old connection (%ld seconds), disconnect it\n",
idletime);
return TRUE;
}
}
return FALSE;
}
/*
* Given one filled in connection struct (named needle), this function should
* detect if there already is one that has all the significant details
@ -1006,7 +1011,6 @@ ConnectionExists(struct Curl_easy *data,
bool foundPendingCandidate = FALSE;
bool canmultiplex = IsMultiplexingPossible(data, needle);
struct connectbundle *bundle;
struct curltime now = Curl_now();
const char *hostbundle;
#ifdef USE_NTLM
@ -1074,12 +1078,6 @@ ConnectionExists(struct Curl_easy *data,
/* connect-only connections will not be reused */
continue;
if(conn_maxage(data, check, now) || extract_if_dead(check, data)) {
/* disconnect it */
(void)Curl_disconnect(data, check, /* dead_connection */TRUE);
continue;
}
multiplexed = CONN_INUSE(check) &&
(bundle->multiuse == BUNDLE_MULTIPLEX);