ydb/contrib/libs/libevent/patches/2596954-http.patch

commit 26d7a4430dbf9c9c6fa4efaf06c22bdf447f07b7
author: aozeritsky
date: 2016-12-19T19:47:17+03:00
revision: 2596954

    [LOGBROKER-2064] apply https patches

--- libevent/http-internal.h	(index)
+++ libevent/http-internal.h	(working tree)
@@ -13,6 +13,7 @@
 #include "event2/event_struct.h"
 #include "util-internal.h"
 #include "defer-internal.h"
+#include "event2/http.h"

 #define HTTP_CONNECT_TIMEOUT	45
 #define HTTP_WRITE_TIMEOUT	50
@@ -55,6 +56,8 @@ struct evhttp_connection {

 	evutil_socket_t fd;
 	struct bufferevent *bufev;
+	bev_factory_cb bufcb;
+	void *bufcb_arg;

 	struct event retry_ev;		/* for retrying connects */

--- libevent/http.c	(index)
+++ libevent/http.c	(working tree)
@@ -1355,6 +1355,23 @@ evhttp_connection_reset_(struct evhttp_connection *evcon)
 		if (evhttp_connected(evcon) && evcon->closecb != NULL)
 			(*evcon->closecb)(evcon, evcon->closecb_arg);

+		/* if we have a bufferevent factory callback set, get a new bufferevent */
+		if (NULL != evcon->bufcb && -1 != bufferevent_getfd(evcon->bufev)) {
+			struct bufferevent *bev = (*evcon->bufcb)(evcon->bufcb_arg);
+
+			if (NULL == bev) {
+				event_warn("%s: bufferevent factory callback failed", __func__);
+			}
+			else {
+				if (bufferevent_get_base(bev) != evcon->base) {
+					bufferevent_base_set(evcon->base, bev);
+				}
+
+				bufferevent_free(evcon->bufev);
+				evcon->bufev = bev;
+			}
+		}
+
 		shutdown(evcon->fd, EVUTIL_SHUT_WR);
 		evutil_closesocket(evcon->fd);
 		evcon->fd = -1;
@@ -2376,6 +2393,30 @@ evhttp_read_header(struct evhttp_connection *evcon,
  * happen elsewhere.
  */

+struct evhttp_connection *evhttp_connection_base_bufferevent_factory_new(
+       struct event_base *base, struct evdns_base *dnsbase,
+       bev_factory_cb cb, void * arg, const char *address, unsigned short port)
+{
+       struct bufferevent *bev = NULL;
+
+       if (NULL != cb) {
+               if (NULL == (bev = (*cb)(arg))) {
+                       event_warn("%s: bufferevent factory callback failed", __func__);
+                       return (NULL);
+               }
+       }
+
+       struct evhttp_connection *ret =
+               evhttp_connection_base_bufferevent_new(base, dnsbase, bev, address, port);
+
+       if (NULL != ret) {
+               ret->bufcb = cb;
+               ret->bufcb_arg = arg;
+       }
+
+       return (ret);
+}
+
 struct evhttp_connection *
 evhttp_connection_new(const char *address, ev_uint16_t port)
 {
--- libevent/include/event2/http.h	(index)
+++ libevent/include/event2/http.h	(working tree)
@@ -234,6 +234,9 @@ EVENT2_EXPORT_SYMBOL
 void evhttp_set_default_content_type(struct evhttp *http,
 	const char *content_type);

+void evhttp_set_bevcb(struct evhttp *http,
+    struct bufferevent* (*cb)(struct event_base *, void *), void *arg);
+
 /**
   Sets the what HTTP methods are supported in requests accepted by this
   server, and passed to user callbacks.
@@ -392,6 +395,11 @@ int evhttp_set_flags(struct evhttp *http, int flags);

 /* Request/Response functionality */

+struct evhttp_connection *evhttp_connection_base_bufferevent_new(
+	struct event_base *base, struct evdns_base *dnsbase, struct bufferevent* bev, const char *address, unsigned short port);
+
+struct bufferevent* evhttp_connection_get_bufferevent(struct evhttp_connection *evcon);
+
 /**
  * Send an HTML error message to the client.
  *
@@ -528,6 +536,38 @@ struct evhttp_connection *evhttp_connection_base_bufferevent_new(
 	struct event_base *base, struct evdns_base *dnsbase, struct bufferevent* bev, const char *address, ev_uint16_t port);

 /**
+ * Creates and returns a new bufferevent object.
+ */
+typedef struct bufferevent* (*bev_factory_cb)(void *);
+
+/**
+ * Create and return a connection object that can be used for making HTTP
+ * requests.  The connection object tries to resolve address and establish the
+ * connection when it is given an http request object.  The specified factory
+ * function is called with the user-supplied argument to retrieve a new
+ * bufferevent whenever the underlying HTTP connection needs to be
+ * reestablished.  This is what you want if, for example, you have a bufferevent
+ * that needs to perform some setup for new connections, such as an SSL
+ * bufferevent.
+ *
+ * @param base the event_base to use for handling the connection
+ * @param dnsbase the dns_base to use for resolving host names; if not
+ *     specified host name resolution will block.
+ * @param cb a callback that returns a new bufferevent to use for connecting to
+ *     the server; if NULL, behavior is the same as in calling
+ *     evhttp_connection_base_bufferevent_new with a NULL bufferevent.  The
+ *     returned bufferevents will be freed as necessary.  The returned
+ *     bufferevents must have no fd set on them.
+ * @param arg the argument to supply to the callback
+ * @param address the address to which to connect
+ * @param port the port to connect to
+ * @return an evhttp_connection object that can be used for making requests
+ */
+struct evhttp_connection *evhttp_connection_base_bufferevent_factory_new(
+	struct event_base *base, struct evdns_base *dnsbase,
+	bev_factory_cb cb, void * arg, const char *address, unsigned short port);
+
+/**
  * Return the bufferevent that an evhttp_connection is using.
  */
 EVENT2_EXPORT_SYMBOL