Revert "Revert "Upgrade to 2.1.8-stable (2017-01-22)." and "Probably Mac build fix?""

This reverts commit 83a0c9c65a60a92d3ea5542596b3ba56db492c37.

Bug: 64543673
Test: make checkbuild
Test: Manual tombstoned test
Change-Id: I84bb128d1dec433195f2cbdbf70236ba17fa9955
diff --git a/test/bench_http.c b/test/bench_http.c
new file mode 100644
index 0000000..d20d3bc
--- /dev/null
+++ b/test/bench_http.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright 2008-2012 Niels Provos and Nick Mathewson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef _WIN32
+#include <winsock2.h>
+#else
+#include <sys/socket.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "event2/event.h"
+#include "event2/buffer.h"
+#include "event2/util.h"
+#include "event2/http.h"
+#include "event2/thread.h"
+
+static void http_basic_cb(struct evhttp_request *req, void *arg);
+
+static char *content;
+static size_t content_len = 0;
+
+static void
+http_basic_cb(struct evhttp_request *req, void *arg)
+{
+	struct evbuffer *evb = evbuffer_new();
+
+	evbuffer_add(evb, content, content_len);
+
+	/* allow sending of an empty reply */
+	evhttp_send_reply(req, HTTP_OK, "Everything is fine", evb);
+
+	evbuffer_free(evb);
+}
+
+#if LIBEVENT_VERSION_NUMBER >= 0x02000200
+static void
+http_ref_cb(struct evhttp_request *req, void *arg)
+{
+	struct evbuffer *evb = evbuffer_new();
+
+	evbuffer_add_reference(evb, content, content_len, NULL, NULL);
+
+	/* allow sending of an empty reply */
+	evhttp_send_reply(req, HTTP_OK, "Everything is fine", evb);
+
+	evbuffer_free(evb);
+}
+#endif
+
+int
+main(int argc, char **argv)
+{
+	struct event_config *cfg = event_config_new();
+	struct event_base *base;
+	struct evhttp *http;
+	int i;
+	int c;
+	int use_iocp = 0;
+	ev_uint16_t port = 8080;
+	char *endptr = NULL;
+
+#ifdef _WIN32
+	WSADATA WSAData;
+	WSAStartup(0x101, &WSAData);
+#else
+	if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
+		return (1);
+#endif
+
+	for (i = 1; i < argc; ++i) {
+		if (*argv[i] != '-')
+			continue;
+
+		c = argv[i][1];
+
+		if ((c == 'p' || c == 'l') && i + 1 >= argc) {
+			fprintf(stderr, "-%c requires argument.\n", c);
+			exit(1);
+		}
+
+		switch (c) {
+		case 'p':
+			if (i+1 >= argc || !argv[i+1]) {
+				fprintf(stderr, "Missing port\n");
+				exit(1);
+			}
+			port = (int)strtol(argv[i+1], &endptr, 10);
+			if (*endptr != '\0') {
+				fprintf(stderr, "Bad port\n");
+				exit(1);
+			}
+			break;
+		case 'l':
+			if (i+1 >= argc || !argv[i+1]) {
+				fprintf(stderr, "Missing content length\n");
+				exit(1);
+			}
+			content_len = (size_t)strtol(argv[i+1], &endptr, 10);
+			if (*endptr != '\0' || content_len == 0) {
+				fprintf(stderr, "Bad content length\n");
+				exit(1);
+			}
+			break;
+#ifdef _WIN32
+		case 'i':
+			use_iocp = 1;
+#ifdef EVTHREAD_USE_WINDOWS_THREADS_IMPLEMENTED
+			evthread_use_windows_threads();
+#endif
+			event_config_set_flag(cfg,EVENT_BASE_FLAG_STARTUP_IOCP);
+			break;
+#endif
+		default:
+			fprintf(stderr, "Illegal argument \"%c\"\n", c);
+			exit(1);
+		}
+	}
+
+	base = event_base_new_with_config(cfg);
+	if (!base) {
+		fprintf(stderr, "creating event_base failed. Exiting.\n");
+		return 1;
+	}
+
+	http = evhttp_new(base);
+
+	content = malloc(content_len);
+	if (content == NULL) {
+		fprintf(stderr, "Cannot allocate content\n");
+		exit(1);
+	} else {
+		int i = 0;
+		for (i = 0; i < (int)content_len; ++i)
+			content[i] = (i & 255);
+	}
+
+	evhttp_set_cb(http, "/ind", http_basic_cb, NULL);
+	fprintf(stderr, "/ind - basic content (memory copy)\n");
+
+	evhttp_set_cb(http, "/ref", http_ref_cb, NULL);
+	fprintf(stderr, "/ref - basic content (reference)\n");
+
+	fprintf(stderr, "Serving %d bytes on port %d using %s\n",
+	    (int)content_len, port,
+	    use_iocp? "IOCP" : event_base_get_method(base));
+
+	evhttp_bind_socket(http, "0.0.0.0", port);
+
+#ifdef _WIN32
+	if (use_iocp) {
+		struct timeval tv={99999999,0};
+		event_base_loopexit(base, &tv);
+	}
+#endif
+	event_base_dispatch(base);
+
+#ifdef _WIN32
+	WSACleanup();
+#endif
+
+	/* NOTREACHED */
+	return (0);
+}