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-rw-r--r--lib/url.c50
1 files changed, 27 insertions, 23 deletions
diff --git a/lib/url.c b/lib/url.c
index a2e8902f1..073c4331b 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -3109,12 +3109,16 @@ static bool SocketIsDead(curl_socket_t sock)
}
/*
- * IsPipeliningPossible() returns TRUE if the options set would allow
- * pipelining/multiplexing and the connection is using a HTTP protocol.
+ * IsPipeliningPossible()
+ *
+ * Return a bitmask with the available pipelining and multiplexing options for
+ * the given requested connection.
*/
-static bool IsPipeliningPossible(const struct Curl_easy *handle,
- const struct connectdata *conn)
+static int IsPipeliningPossible(const struct Curl_easy *handle,
+ const struct connectdata *conn)
{
+ int avail = 0;
+
/* If a HTTP protocol and pipelining is enabled */
if((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
(!conn->bits.protoconnstart || !conn->bits.close)) {
@@ -3124,14 +3128,14 @@ static bool IsPipeliningPossible(const struct Curl_easy *handle,
(handle->set.httpreq == HTTPREQ_GET ||
handle->set.httpreq == HTTPREQ_HEAD))
/* didn't ask for HTTP/1.0 and a GET or HEAD */
- return TRUE;
+ avail |= CURLPIPE_HTTP1;
if(Curl_pipeline_wanted(handle->multi, CURLPIPE_MULTIPLEX) &&
(handle->set.httpversion >= CURL_HTTP_VERSION_2))
/* allows HTTP/2 */
- return TRUE;
+ avail |= CURLPIPE_MULTIPLEX;
}
- return FALSE;
+ return avail;
}
int Curl_removeHandleFromPipeline(struct Curl_easy *handle,
@@ -3418,7 +3422,7 @@ ConnectionExists(struct Curl_easy *data,
struct connectdata *check;
struct connectdata *chosen = 0;
bool foundPendingCandidate = FALSE;
- bool canPipeline = IsPipeliningPossible(data, needle);
+ int pipe = IsPipeliningPossible(data, needle);
struct connectbundle *bundle;
#ifdef USE_NTLM
@@ -3434,10 +3438,9 @@ ConnectionExists(struct Curl_easy *data,
*force_reuse = FALSE;
*waitpipe = FALSE;
- /* We can't pipe if the site is blacklisted */
- if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
- canPipeline = FALSE;
- }
+ /* We can't pipeline if the site is blacklisted */
+ if((pipe & CURLPIPE_HTTP1) && Curl_pipeline_site_blacklisted(data, needle))
+ pipe &= ~ CURLPIPE_HTTP1;
/* Look up the bundle with all the connections to this
particular host */
@@ -3457,8 +3460,8 @@ ConnectionExists(struct Curl_easy *data,
(bundle->multiuse == BUNDLE_MULTIPLEX ?
"can multiplex" : "serially")));
- /* We can't pipe if we don't know anything about the server */
- if(canPipeline) {
+ /* We can't pipeline if we don't know anything about the server */
+ if(pipe) {
if(bundle->multiuse <= BUNDLE_UNKNOWN) {
if((bundle->multiuse == BUNDLE_UNKNOWN) && data->set.pipewait) {
infof(data, "Server doesn't support multi-use yet, wait\n");
@@ -3467,18 +3470,18 @@ ConnectionExists(struct Curl_easy *data,
}
infof(data, "Server doesn't support multi-use (yet)\n");
- canPipeline = FALSE;
+ pipe = 0;
}
if((bundle->multiuse == BUNDLE_PIPELINING) &&
!Curl_pipeline_wanted(data->multi, CURLPIPE_HTTP1)) {
/* not asked for, switch off */
infof(data, "Could pipeline, but not asked to!\n");
- canPipeline = FALSE;
+ pipe = 0;
}
else if((bundle->multiuse == BUNDLE_MULTIPLEX) &&
!Curl_pipeline_wanted(data->multi, CURLPIPE_MULTIPLEX)) {
infof(data, "Could multiplex, but not asked to!\n");
- canPipeline = FALSE;
+ pipe = 0;
}
}
@@ -3499,20 +3502,21 @@ ConnectionExists(struct Curl_easy *data,
pipeLen = check->send_pipe.size + check->recv_pipe.size;
- if(canPipeline) {
+ if(pipe) {
if(check->bits.protoconnstart && check->bits.close)
continue;
if(!check->bits.multiplex) {
- /* If not multiplexing, make sure the pipe has only GET requests */
+ /* If not multiplexing, make sure the connection is fine for HTTP/1
+ pipelining */
struct Curl_easy* sh = gethandleathead(&check->send_pipe);
struct Curl_easy* rh = gethandleathead(&check->recv_pipe);
if(sh) {
- if(!IsPipeliningPossible(sh, check))
+ if(!(IsPipeliningPossible(sh, check) & CURLPIPE_HTTP1))
continue;
}
else if(rh) {
- if(!IsPipeliningPossible(rh, check))
+ if(!(IsPipeliningPossible(rh, check) & CURLPIPE_HTTP1))
continue;
}
}
@@ -3620,7 +3624,7 @@ ConnectionExists(struct Curl_easy *data,
}
}
- if(!canPipeline && check->inuse)
+ if(!pipe && check->inuse)
/* this request can't be pipelined but the checked connection is
already in use so we skip it */
continue;
@@ -3751,7 +3755,7 @@ ConnectionExists(struct Curl_easy *data,
continue;
}
#endif
- if(canPipeline) {
+ if(pipe) {
/* We can pipeline if we want to. Let's continue looking for
the optimal connection to use, i.e the shortest pipe that is not
blacklisted. */