Blame SOURCES/httpd-2.4.6-r1681289.patch

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diff --git a/modules/proxy/proxy_util.c b/modules/proxy/proxy_util.c
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index a78224b..e672e4a 100644
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--- a/modules/proxy/proxy_util.c
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+++ b/modules/proxy/proxy_util.c
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@@ -2260,8 +2260,12 @@ ap_proxy_determine_connection(apr_pool_t *p, request_rec *r,
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      * The scheme handler decides if this is permanent or
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      * short living pool.
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      */
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-    /* are we connecting directly, or via a proxy? */
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-    if (!proxyname) {
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+    /* Unless we are connecting the backend via a (forward Proxy)Remote, we
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+     * have to use the original form of the URI (non absolute), but this is
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+     * also the case via a remote proxy using the CONNECT method since the
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+     * original request (and URI) is to be embedded in the body.
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+     */
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+    if (!proxyname || conn->is_ssl) {
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         *url = apr_pstrcat(p, uri->path, uri->query ? "?" : "",
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                            uri->query ? uri->query : "",
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                            uri->fragment ? "#" : "",