thodg/libgit2

diff --git a/examples/network/ls-remote.c b/examples/network/ls-remote.c
index c9da79f..9329da5 100644
--- a/examples/network/ls-remote.c
+++ b/examples/network/ls-remote.c
@@ -26,7 +26,7 @@ static int use_remote(git_repository *repo, char *name)
 	 */
 	callbacks.credentials = cred_acquire_cb;
 
-	error = git_remote_connect(remote, GIT_DIRECTION_FETCH, &callbacks, NULL);
+	error = git_remote_connect(remote, GIT_DIRECTION_FETCH, &callbacks, NULL, NULL);
 	if (error < 0)
 		goto cleanup;
 
diff --git a/include/git2/remote.h b/include/git2/remote.h
index 4f345d3..c459f42 100644
--- a/include/git2/remote.h
+++ b/include/git2/remote.h
@@ -15,6 +15,7 @@
 #include "strarray.h"
 #include "transport.h"
 #include "pack.h"
+#include "proxy.h"
 
 /**
  * @file git2/remote.h
@@ -241,10 +242,11 @@ GIT_EXTERN(const git_refspec *)git_remote_get_refspec(const git_remote *remote, 
  * @param direction GIT_DIRECTION_FETCH if you want to fetch or
  * GIT_DIRECTION_PUSH if you want to push
  * @param callbacks the callbacks to use for this connection
+ * @param proxy_opts proxy settings
  * @param custom_headers extra HTTP headers to use in this connection
  * @return 0 or an error code
  */
-GIT_EXTERN(int) git_remote_connect(git_remote *remote, git_direction direction, const git_remote_callbacks *callbacks, const git_strarray *custom_headers);
+GIT_EXTERN(int) git_remote_connect(git_remote *remote, git_direction direction, const git_remote_callbacks *callbacks, const git_proxy_options *proxy_opts, const git_strarray *custom_headers);
 
 /**
  * Get the remote repository's reference advertisement list
@@ -549,13 +551,19 @@ typedef struct {
 	git_remote_autotag_option_t download_tags;
 
 	/**
+	 * Proxy options to use, by default no proxy is used.
+	 */
+	git_proxy_options proxy_opts;
+
+	/**
 	 * Extra headers for this fetch operation
 	 */
 	git_strarray custom_headers;
 } git_fetch_options;
 
 #define GIT_FETCH_OPTIONS_VERSION 1
-#define GIT_FETCH_OPTIONS_INIT { GIT_FETCH_OPTIONS_VERSION, GIT_REMOTE_CALLBACKS_INIT, GIT_FETCH_PRUNE_UNSPECIFIED, 1 }
+#define GIT_FETCH_OPTIONS_INIT { GIT_FETCH_OPTIONS_VERSION, GIT_REMOTE_CALLBACKS_INIT, GIT_FETCH_PRUNE_UNSPECIFIED, 1, \
+				 GIT_REMOTE_DOWNLOAD_TAGS_UNSPECIFIED, GIT_PROXY_OPTIONS_INIT }
 
 /**
  * Initializes a `git_fetch_options` with default values. Equivalent to
@@ -593,13 +601,18 @@ typedef struct {
 	git_remote_callbacks callbacks;
 
 	/**
+	* Proxy options to use, by default no proxy is used.
+	*/
+	git_proxy_options proxy_opts;
+
+	/**
 	 * Extra headers for this push operation
 	 */
 	git_strarray custom_headers;
 } git_push_options;
 
 #define GIT_PUSH_OPTIONS_VERSION 1
-#define GIT_PUSH_OPTIONS_INIT { GIT_PUSH_OPTIONS_VERSION, 0, GIT_REMOTE_CALLBACKS_INIT }
+#define GIT_PUSH_OPTIONS_INIT { GIT_PUSH_OPTIONS_VERSION, 0, GIT_REMOTE_CALLBACKS_INIT, GIT_PROXY_OPTIONS_INIT }
 
 /**
  * Initializes a `git_push_options` with default values. Equivalent to
diff --git a/include/git2/sys/transport.h b/include/git2/sys/transport.h
index ce0234a..60e38b2 100644
--- a/include/git2/sys/transport.h
+++ b/include/git2/sys/transport.h
@@ -11,6 +11,7 @@
 #include "git2/net.h"
 #include "git2/types.h"
 #include "git2/strarray.h"
+#include "git2/proxy.h"
 
 /**
  * @file git2/sys/transport.h
@@ -53,6 +54,7 @@ struct git_transport {
 		const char *url,
 		git_cred_acquire_cb cred_acquire_cb,
 		void *cred_acquire_payload,
+		const git_proxy_options *proxy_opts,
 		int direction,
 		int flags);
 
@@ -65,7 +67,7 @@ struct git_transport {
 		git_transport *transport);
 
 	/* Executes the push whose context is in the git_push object. */
-	int (*push)(git_transport *transport, git_push *push, const git_remote_callbacks *callbacks);
+	int(*push)(git_transport *transport, git_push *push, const git_remote_callbacks *callbacks);
 
 	/* This function may be called after a successful call to connect(), when
 	 * the direction is FETCH. The function performs a negotiation to calculate
diff --git a/src/proxy.c b/src/proxy.c
index 2112596..f53ac11 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -14,3 +14,19 @@ int git_proxy_init_options(git_proxy_options *opts, unsigned int version)
 		opts, version, git_proxy_options, GIT_PROXY_OPTIONS_INIT);
 	return 0;
 }
+
+int git_proxy_options_dup(git_proxy_options *tgt, const git_proxy_options *src)
+{
+	if (!src) {
+		git_proxy_init_options(tgt, GIT_PROXY_OPTIONS_VERSION);
+		return 0;
+	}
+
+	memcpy(tgt, src, sizeof(git_proxy_options));
+	if (src->url) {
+		tgt->url = git__strdup(src->url);
+		GITERR_CHECK_ALLOC(tgt->url);
+	}
+
+	return 0;
+}
diff --git a/src/proxy.h b/src/proxy.h
new file mode 100644
index 0000000..bf93827
--- /dev/null
+++ b/src/proxy.h
@@ -0,0 +1,14 @@
+/*
+* Copyright (C) the libgit2 contributors. All rights reserved.
+*
+* This file is part of libgit2, distributed under the GNU GPL v2 with
+* a Linking Exception. For full terms see the included COPYING file.
+*/
+#ifndef INCLUDE_proxy_h__
+#define INCLUDE_proxy_h__
+
+#include "git2/proxy.h"
+
+extern int git_proxy_options_dup(git_proxy_options *tgt, const git_proxy_options *src);
+
+#endif
\ No newline at end of file
diff --git a/src/push.c b/src/push.c
index 0747259..b490138 100644
--- a/src/push.c
+++ b/src/push.c
@@ -639,7 +639,7 @@ int git_push_finish(git_push *push, const git_remote_callbacks *callbacks)
 	int error;
 
 	if (!git_remote_connected(push->remote) &&
-	    (error = git_remote_connect(push->remote, GIT_DIRECTION_PUSH, callbacks, push->custom_headers)) < 0)
+	    (error = git_remote_connect(push->remote, GIT_DIRECTION_PUSH, callbacks, NULL, push->custom_headers)) < 0)
 		return error;
 
 	if ((error = filter_refs(push->remote)) < 0 ||
diff --git a/src/remote.c b/src/remote.c
index 8b7203e..5ff7f68 100644
--- a/src/remote.c
+++ b/src/remote.c
@@ -695,7 +695,7 @@ static int set_transport_custom_headers(git_transport *t, const git_strarray *cu
 	return t->set_custom_headers(t, custom_headers);
 }
 
-int git_remote_connect(git_remote *remote, git_direction direction, const git_remote_callbacks *callbacks, const git_strarray *custom_headers)
+int git_remote_connect(git_remote *remote, git_direction direction, const git_remote_callbacks *callbacks, const git_proxy_options *proxy, const git_strarray *custom_headers)
 {
 	git_transport *t;
 	const char *url;
@@ -714,6 +714,9 @@ int git_remote_connect(git_remote *remote, git_direction direction, const git_re
 		payload     = callbacks->payload;
 	}
 
+	if (proxy)
+		GITERR_CHECK_VERSION(proxy, GIT_PROXY_OPTIONS_VERSION, "git_proxy_options");
+
 	t = remote->transport;
 
 	url = git_remote__urlfordirection(remote, direction);
@@ -738,7 +741,7 @@ int git_remote_connect(git_remote *remote, git_direction direction, const git_re
 		goto on_error;
 
 	if ((error = set_transport_callbacks(t, callbacks)) < 0 ||
-	    (error = t->connect(t, url, credentials, payload, direction, flags)) != 0)
+	    (error = t->connect(t, url, credentials, payload, proxy, direction, flags)) != 0)
 		goto on_error;
 
 	remote->transport = t;
@@ -896,6 +899,7 @@ int git_remote_download(git_remote *remote, const git_strarray *refspecs, const 
 	git_vector *to_active, specs = GIT_VECTOR_INIT, refs = GIT_VECTOR_INIT;
 	const git_remote_callbacks *cbs = NULL;
 	const git_strarray *custom_headers = NULL;
+	const git_proxy_options *proxy = NULL;
 
 	assert(remote);
 
@@ -903,10 +907,12 @@ int git_remote_download(git_remote *remote, const git_strarray *refspecs, const 
 		GITERR_CHECK_VERSION(&opts->callbacks, GIT_REMOTE_CALLBACKS_VERSION, "git_remote_callbacks");
 		cbs = &opts->callbacks;
 		custom_headers = &opts->custom_headers;
+		GITERR_CHECK_VERSION(&opts->proxy_opts, GIT_PROXY_OPTIONS_VERSION, "git_proxy_options");
+		proxy = &opts->proxy_opts;
 	}
 
 	if (!git_remote_connected(remote) &&
-	    (error = git_remote_connect(remote, GIT_DIRECTION_FETCH, cbs, custom_headers)) < 0)
+	    (error = git_remote_connect(remote, GIT_DIRECTION_FETCH, cbs, proxy, custom_headers)) < 0)
 		goto on_error;
 
 	if (ls_to_vector(&refs, remote) < 0)
@@ -971,6 +977,7 @@ int git_remote_fetch(
 	git_buf reflog_msg_buf = GIT_BUF_INIT;
 	const git_remote_callbacks *cbs = NULL;
 	const git_strarray *custom_headers = NULL;
+	const git_proxy_options *proxy = NULL;
 
 	if (opts) {
 		GITERR_CHECK_VERSION(&opts->callbacks, GIT_REMOTE_CALLBACKS_VERSION, "git_remote_callbacks");
@@ -978,10 +985,12 @@ int git_remote_fetch(
 		custom_headers = &opts->custom_headers;
 		update_fetchhead = opts->update_fetchhead;
 		tagopt = opts->download_tags;
+		GITERR_CHECK_VERSION(&opts->proxy_opts, GIT_PROXY_OPTIONS_VERSION, "git_proxy_options");
+		proxy = &opts->proxy_opts;
 	}
 
 	/* Connect and download everything */
-	if ((error = git_remote_connect(remote, GIT_DIRECTION_FETCH, cbs, custom_headers)) != 0)
+	if ((error = git_remote_connect(remote, GIT_DIRECTION_FETCH, cbs, proxy, custom_headers)) != 0)
 		return error;
 
 	error = git_remote_download(remote, refspecs, opts);
@@ -2393,16 +2402,18 @@ int git_remote_upload(git_remote *remote, const git_strarray *refspecs, const gi
 	git_refspec *spec;
 	const git_remote_callbacks *cbs = NULL;
 	const git_strarray *custom_headers = NULL;
+	const git_proxy_options *proxy = NULL;
 
 	assert(remote);
 
 	if (opts) {
 		cbs = &opts->callbacks;
 		custom_headers = &opts->custom_headers;
+		proxy = &opts->proxy_opts;
 	}
 
 	if (!git_remote_connected(remote) &&
-	    (error = git_remote_connect(remote, GIT_DIRECTION_PUSH, cbs, custom_headers)) < 0)
+	    (error = git_remote_connect(remote, GIT_DIRECTION_PUSH, cbs, proxy, custom_headers)) < 0)
 		goto cleanup;
 
 	free_refspecs(&remote->active_refspecs);
@@ -2452,16 +2463,19 @@ int git_remote_push(git_remote *remote, const git_strarray *refspecs, const git_
 	int error;
 	const git_remote_callbacks *cbs = NULL;
 	const git_strarray *custom_headers = NULL;
+	const git_proxy_options *proxy = NULL;
 
 	if (opts) {
 		GITERR_CHECK_VERSION(&opts->callbacks, GIT_REMOTE_CALLBACKS_VERSION, "git_remote_callbacks");
 		cbs = &opts->callbacks;
 		custom_headers = &opts->custom_headers;
+		GITERR_CHECK_VERSION(&opts->proxy_opts, GIT_PROXY_OPTIONS_VERSION, "git_proxy_options");
+		proxy = &opts->proxy_opts;
 	}
 
 	assert(remote && refspecs);
 
-	if ((error = git_remote_connect(remote, GIT_DIRECTION_PUSH, cbs, custom_headers)) < 0)
+	if ((error = git_remote_connect(remote, GIT_DIRECTION_PUSH, cbs, proxy, custom_headers)) < 0)
 		return error;
 
 	if ((error = git_remote_upload(remote, refspecs, opts)) < 0)
diff --git a/src/transports/local.c b/src/transports/local.c
index 1c6e5f0..4eae9de 100644
--- a/src/transports/local.c
+++ b/src/transports/local.c
@@ -25,6 +25,7 @@
 #include "odb.h"
 #include "push.h"
 #include "remote.h"
+#include "proxy.h"
 
 typedef struct {
 	git_transport parent;
@@ -199,6 +200,7 @@ static int local_connect(
 	const char *url,
 	git_cred_acquire_cb cred_acquire_cb,
 	void *cred_acquire_payload,
+	const git_proxy_options *proxy,
 	int direction, int flags)
 {
 	git_repository *repo;
@@ -209,6 +211,7 @@ static int local_connect(
 
 	GIT_UNUSED(cred_acquire_cb);
 	GIT_UNUSED(cred_acquire_payload);
+	GIT_UNUSED(proxy);
 
 	if (t->connected)
 		return 0;
@@ -439,7 +442,7 @@ static int local_push(
 
 		if (!url || t->parent.close(&t->parent) < 0 ||
 			t->parent.connect(&t->parent, url,
-			NULL, NULL, GIT_DIRECTION_PUSH, flags))
+			NULL, NULL, NULL, GIT_DIRECTION_PUSH, flags))
 			goto on_error;
 	}
 
diff --git a/src/transports/smart.c b/src/transports/smart.c
index b0611c3..a78b572 100644
--- a/src/transports/smart.c
+++ b/src/transports/smart.c
@@ -8,6 +8,7 @@
 #include "smart.h"
 #include "refs.h"
 #include "refspec.h"
+#include "proxy.h"
 
 static int git_smart__recv_cb(gitno_buffer *buf)
 {
@@ -199,6 +200,7 @@ static int git_smart__connect(
 	const char *url,
 	git_cred_acquire_cb cred_acquire_cb,
 	void *cred_acquire_payload,
+	const git_proxy_options *proxy,
 	int direction,
 	int flags)
 {
@@ -216,6 +218,9 @@ static int git_smart__connect(
 	t->url = git__strdup(url);
 	GITERR_CHECK_ALLOC(t->url);
 
+	if (git_proxy_options_dup(&t->proxy, proxy) < 0)
+		return -1;
+
 	t->direction = direction;
 	t->flags = flags;
 	t->cred_acquire_cb = cred_acquire_cb;
diff --git a/src/transports/smart.h b/src/transports/smart.h
index 800466a..0a0c3fc 100644
--- a/src/transports/smart.h
+++ b/src/transports/smart.h
@@ -133,6 +133,7 @@ typedef struct {
 	char *url;
 	git_cred_acquire_cb cred_acquire_cb;
 	void *cred_acquire_payload;
+	git_proxy_options proxy;
 	int direction;
 	int flags;
 	git_transport_message_cb progress_cb;
diff --git a/src/transports/winhttp.c b/src/transports/winhttp.c
index 32b8380..22be39c 100644
--- a/src/transports/winhttp.c
+++ b/src/transports/winhttp.c
@@ -91,13 +91,39 @@ typedef struct {
 	git_smart_subtransport parent;
 	transport_smart *owner;
 	gitno_connection_data connection_data;
+	gitno_connection_data proxy_connection_data;
 	git_cred *cred;
 	git_cred *url_cred;
+	git_cred *proxy_cred;
 	int auth_mechanism;
 	HINTERNET session;
 	HINTERNET connection;
 } winhttp_subtransport;
 
+static int apply_basic_credential_proxy(HINTERNET request, git_cred *cred)
+{
+	git_cred_userpass_plaintext *c = (git_cred_userpass_plaintext *)cred;
+	wchar_t *user, *pass;
+	int error;
+
+	if ((error = git__utf8_to_16_alloc(&user, c->username)) < 0)
+		return error;
+
+	if ((error = git__utf8_to_16_alloc(&pass, c->password)) < 0)
+		return error;
+
+	if (!WinHttpSetCredentials(request, WINHTTP_AUTH_TARGET_PROXY, WINHTTP_AUTH_SCHEME_BASIC,
+	                           user, pass, NULL)) {
+		giterr_set(GITERR_OS, "failed to set proxy auth");
+		error = -1;
+	}
+
+	git__free(user);
+	git__free(pass);
+
+	return error;
+}
+
 static int apply_basic_credential(HINTERNET request, git_cred *cred)
 {
 	git_cred_userpass_plaintext *c = (git_cred_userpass_plaintext *)cred;
@@ -271,6 +297,34 @@ static void winhttp_stream_close(winhttp_stream *s)
 	s->sent_request = 0;
 }
 
+/**
+ * Extract the url and password from a URL. The outputs are pointers
+ * into the input.
+ */
+static int userpass_from_url(wchar_t **user, int *user_len,
+			     wchar_t **pass, int *pass_len,
+			     const wchar_t *url, int url_len)
+{
+	URL_COMPONENTS components = { 0 };
+
+	components.dwStructSize = sizeof(components);
+	/* These tell WinHttpCrackUrl that we're interested in the fields */
+	components.dwUserNameLength = 1;
+	components.dwPasswordLength = 1;
+
+	if (!WinHttpCrackUrl(url, url_len, 0, &components)) {
+		giterr_set(GITERR_OS, "failed to extract user/pass from url");
+		return -1;
+	}
+
+	*user     = components.lpszUserName;
+	*user_len = components.dwUserNameLength;
+	*pass     = components.lpszPassword;
+	*pass_len = components.dwPasswordLength;
+
+	return 0;
+}
+
 static int winhttp_stream_connect(winhttp_stream *s)
 {
 	winhttp_subtransport *t = OWNING_SUBTRANSPORT(s);
@@ -284,6 +338,7 @@ static int winhttp_stream_connect(winhttp_stream *s)
 	int default_timeout = TIMEOUT_INFINITE;
 	int default_connect_timeout = DEFAULT_CONNECT_TIMEOUT;
 	size_t i;
+	const git_proxy_options *proxy_opts;
 
 	/* Prepare URL */
 	git_buf_printf(&buf, "%s%s", t->connection_data.path, s->service_url);
@@ -317,26 +372,49 @@ static int winhttp_stream_connect(winhttp_stream *s)
 		goto on_error;
 	}
 
-	/* Set proxy if necessary */
-	if (git_remote__get_http_proxy(t->owner->owner, !!t->connection_data.use_ssl, &proxy_url) < 0)
-		goto on_error;
+	proxy_opts = &t->owner->proxy;
+	if (proxy_opts->type == GIT_PROXY_AUTO) {
+		/* Set proxy if necessary */
+		if (git_remote__get_http_proxy(t->owner->owner, !!t->connection_data.use_ssl, &proxy_url) < 0)
+			goto on_error;
+	}
+	else if (proxy_opts->type == GIT_PROXY_HTTP) {
+		proxy_url = git__strdup(proxy_opts->url);
+		GITERR_CHECK_ALLOC(proxy_url);
+	}
 
 	if (proxy_url) {
+		git_buf processed_url = GIT_BUF_INIT;
 		WINHTTP_PROXY_INFO proxy_info;
 		wchar_t *proxy_wide;
 
-		/* Convert URL to wide characters */
-		int proxy_wide_len = git__utf8_to_16_alloc(&proxy_wide, proxy_url);
+		if ((error = gitno_connection_data_from_url(&t->proxy_connection_data, proxy_url, NULL)) < 0)
+			goto on_error;
 
-		if (proxy_wide_len < 0) {
-			giterr_set(GITERR_OS, "Failed to convert string to wide form");
+		if (t->proxy_connection_data.user && t->proxy_connection_data.pass) {
+			if ((error = git_cred_userpass_plaintext_new(&t->proxy_cred, t->proxy_connection_data.user, t->proxy_connection_data.pass)) < 0)
+				goto on_error;
+		}
+
+		if (t->proxy_connection_data.use_ssl)
+			git_buf_puts(&processed_url, "https://");
+		else
+			git_buf_puts(&processed_url, "http://");
+
+		git_buf_puts(&processed_url, t->proxy_connection_data.host);
+		if (t->proxy_connection_data.port)
+			git_buf_printf(&processed_url, ":%s", t->proxy_connection_data.port);
+
+		if (git_buf_oom(&processed_url)) {
+			giterr_set_oom();
+			error = -1;
 			goto on_error;
 		}
 
-		/* Strip any trailing forward slash on the proxy URL;
-		 * WinHTTP doesn't like it if one is present */
-		if (proxy_wide_len > 1 && L'/' == proxy_wide[proxy_wide_len - 2])
-			proxy_wide[proxy_wide_len - 2] = L'\0';
+		/* Convert URL to wide characters */
+		if ((error = git__utf8_to_16_alloc(&proxy_wide, processed_url.ptr)) < 0)
+			goto on_error;
+
 
 		proxy_info.dwAccessType = WINHTTP_ACCESS_TYPE_NAMED_PROXY;
 		proxy_info.lpszProxy = proxy_wide;
@@ -352,6 +430,14 @@ static int winhttp_stream_connect(winhttp_stream *s)
 		}
 
 		git__free(proxy_wide);
+
+		if (t->proxy_cred) {
+			if (t->proxy_cred->credtype == GIT_CREDTYPE_USERPASS_PLAINTEXT) {
+				if ((error = apply_basic_credential_proxy(s->request, t->proxy_cred)) < 0)
+					goto on_error;
+			}
+		}
+
 	}
 
 	/* Disable WinHTTP redirects so we can handle them manually. Why, you ask?
@@ -919,6 +1005,26 @@ replay:
 			goto replay;
 		}
 
+		/* Handle proxy authentication failures */
+		if (status_code == HTTP_STATUS_PROXY_AUTH_REQ) {
+			int allowed_types;
+
+			if (parse_unauthorized_response(s->request, &allowed_types, &t->auth_mechanism) < 0)
+				return -1;
+
+			/* TODO: extract the username from the url, no payload? */
+			if (t->owner->proxy.credentials) {
+				int cred_error = 1;
+				cred_error = t->owner->proxy.credentials(&t->proxy_cred, t->owner->proxy.url, NULL, allowed_types, NULL);
+
+				if (cred_error < 0)
+					return cred_error;
+			}
+
+			winhttp_stream_close(s);
+			goto replay;
+		}
+
 		/* Handle authentication failures */
 		if (HTTP_STATUS_DENIED == status_code && get_verb == s->verb) {
 			int allowed_types;
diff --git a/tests/network/remote/defaultbranch.c b/tests/network/remote/defaultbranch.c
index 5edd79f..9ab0d40 100644
--- a/tests/network/remote/defaultbranch.c
+++ b/tests/network/remote/defaultbranch.c
@@ -26,7 +26,7 @@ static void assert_default_branch(const char *should)
 {
 	git_buf name = GIT_BUF_INIT;
 
-	cl_git_pass(git_remote_connect(g_remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(g_remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	cl_git_pass(git_remote_default_branch(&name, g_remote));
 	cl_assert_equal_s(should, name.ptr);
 	git_buf_free(&name);
@@ -57,7 +57,7 @@ void test_network_remote_defaultbranch__no_default_branch(void)
 	git_buf buf = GIT_BUF_INIT;
 
 	cl_git_pass(git_remote_create(&remote_b, g_repo_b, "self", git_repository_path(g_repo_b)));
-	cl_git_pass(git_remote_connect(remote_b, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote_b, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	cl_git_pass(git_remote_ls(&heads, &len, remote_b));
 	cl_assert_equal_i(0, len);
 
@@ -80,7 +80,7 @@ void test_network_remote_defaultbranch__detached_sharing_nonbranch_id(void)
 	cl_git_pass(git_reference_create(&ref, g_repo_a, "refs/foo/bar", &id, 1, NULL));
 	git_reference_free(ref);
 
-	cl_git_pass(git_remote_connect(g_remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(g_remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	cl_git_fail_with(GIT_ENOTFOUND, git_remote_default_branch(&buf, g_remote));
 
 	cl_git_pass(git_clone(&cloned_repo, git_repository_path(g_repo_a), "./local-detached", NULL));
diff --git a/tests/network/remote/local.c b/tests/network/remote/local.c
index 4d990ab..6194802 100644
--- a/tests/network/remote/local.c
+++ b/tests/network/remote/local.c
@@ -40,7 +40,7 @@ static void connect_to_local_repository(const char *local_repository)
 	git_buf_sets(&file_path_buf, cl_git_path_url(local_repository));
 
 	cl_git_pass(git_remote_create_anonymous(&remote, repo, git_buf_cstr(&file_path_buf)));
-	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 }
 
 void test_network_remote_local__connected(void)
@@ -214,7 +214,7 @@ void test_network_remote_local__push_to_bare_remote(void)
 
 	/* Connect to the bare repo */
 	cl_git_pass(git_remote_create_anonymous(&localremote, repo, "./localbare.git"));
-	cl_git_pass(git_remote_connect(localremote, GIT_DIRECTION_PUSH, NULL, NULL));
+	cl_git_pass(git_remote_connect(localremote, GIT_DIRECTION_PUSH, NULL, NULL, NULL));
 
 	/* Try to push */
 	cl_git_pass(git_remote_upload(localremote, &push_array, NULL));
@@ -253,7 +253,7 @@ void test_network_remote_local__push_to_bare_remote_with_file_url(void)
 
 	/* Connect to the bare repo */
 	cl_git_pass(git_remote_create_anonymous(&localremote, repo, url));
-	cl_git_pass(git_remote_connect(localremote, GIT_DIRECTION_PUSH, NULL, NULL));
+	cl_git_pass(git_remote_connect(localremote, GIT_DIRECTION_PUSH, NULL, NULL, NULL));
 
 	/* Try to push */
 	cl_git_pass(git_remote_upload(localremote, &push_array, NULL));
@@ -290,7 +290,7 @@ void test_network_remote_local__push_to_non_bare_remote(void)
 
 	/* Connect to the bare repo */
 	cl_git_pass(git_remote_create_anonymous(&localremote, repo, "./localnonbare"));
-	cl_git_pass(git_remote_connect(localremote, GIT_DIRECTION_PUSH, NULL, NULL));
+	cl_git_pass(git_remote_connect(localremote, GIT_DIRECTION_PUSH, NULL, NULL, NULL));
 
 	/* Try to push */
 	cl_git_fail_with(GIT_EBAREREPO, git_remote_upload(localremote, &push_array, NULL));
diff --git a/tests/network/remote/remotes.c b/tests/network/remote/remotes.c
index 46abc6d..9c7e6b2 100644
--- a/tests/network/remote/remotes.c
+++ b/tests/network/remote/remotes.c
@@ -93,7 +93,7 @@ void test_network_remote_remotes__error_when_no_push_available(void)
 	cl_git_pass(git_remote_create_anonymous(&r, _repo, cl_fixture("testrepo.git")));
 
 	callbacks.transport = git_transport_local;
-	cl_git_pass(git_remote_connect(r, GIT_DIRECTION_PUSH, &callbacks, NULL));
+	cl_git_pass(git_remote_connect(r, GIT_DIRECTION_PUSH, &callbacks, NULL, NULL));
 
 	/* Make sure that push is really not available */
 	r->transport->push = NULL;
@@ -359,7 +359,7 @@ void test_network_remote_remotes__can_load_with_an_empty_url(void)
 	cl_assert(remote->url == NULL);
 	cl_assert(remote->pushurl == NULL);
 
-	cl_git_fail(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_fail(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 
 	cl_assert(giterr_last() != NULL);
 	cl_assert(giterr_last()->klass == GITERR_INVALID);
@@ -376,7 +376,7 @@ void test_network_remote_remotes__can_load_with_only_an_empty_pushurl(void)
 	cl_assert(remote->url == NULL);
 	cl_assert(remote->pushurl == NULL);
 
-	cl_git_fail(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_fail(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 
 	git_remote_free(remote);
 }
diff --git a/tests/online/clone.c b/tests/online/clone.c
index b84be40..cc4d2fe 100644
--- a/tests/online/clone.c
+++ b/tests/online/clone.c
@@ -24,6 +24,9 @@ static char *_remote_ssh_pubkey = NULL;
 static char *_remote_ssh_privkey = NULL;
 static char *_remote_ssh_passphrase = NULL;
 static char *_remote_ssh_fingerprint = NULL;
+static char *_remote_proxy_url = NULL;
+static char *_remote_proxy_user = NULL;
+static char *_remote_proxy_pass = NULL;
 
 
 void test_online_clone__initialize(void)
@@ -46,6 +49,9 @@ void test_online_clone__initialize(void)
 	_remote_ssh_privkey = cl_getenv("GITTEST_REMOTE_SSH_KEY");
 	_remote_ssh_passphrase = cl_getenv("GITTEST_REMOTE_SSH_PASSPHRASE");
 	_remote_ssh_fingerprint = cl_getenv("GITTEST_REMOTE_SSH_FINGERPRINT");
+	_remote_proxy_url = cl_getenv("GITTEST_REMOTE_PROXY_URL");
+	_remote_proxy_user = cl_getenv("GITTEST_REMOTE_PROXY_USER");
+	_remote_proxy_pass = cl_getenv("GITTEST_REMOTE_PROXY_PASS");
 }
 
 void test_online_clone__cleanup(void)
@@ -63,6 +69,9 @@ void test_online_clone__cleanup(void)
 	git__free(_remote_ssh_privkey);
 	git__free(_remote_ssh_passphrase);
 	git__free(_remote_ssh_fingerprint);
+	git__free(_remote_proxy_url);
+	git__free(_remote_proxy_user);
+	git__free(_remote_proxy_pass);
 }
 
 void test_online_clone__network_full(void)
@@ -653,3 +662,39 @@ void test_online_clone__start_with_http(void)
 
 	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
 }
+
+static int called_proxy_creds;
+static int proxy_creds(git_cred **out, const char *url, const char *username, unsigned int allowed, void *payload)
+{
+	GIT_UNUSED(payload);
+	GIT_UNUSED(username);
+
+	called_proxy_creds = 1;
+	return git_cred_userpass_plaintext_new(out, _remote_proxy_user, _remote_proxy_pass);
+}
+
+void test_online_clone__proxy_credentials_request(void)
+{
+	if (!_remote_proxy_url || !_remote_proxy_user || !_remote_proxy_pass)
+		cl_skip();
+
+	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_HTTP;
+	g_options.fetch_opts.proxy_opts.url = _remote_proxy_url;
+	g_options.fetch_opts.proxy_opts.credentials = proxy_creds;
+	called_proxy_creds = 0;
+	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
+	cl_assert(called_proxy_creds);
+}
+
+void test_online_clone__proxy_credentials_in_url(void)
+{
+	if (!_remote_proxy_url)
+		cl_skip();
+
+	g_options.fetch_opts.proxy_opts.type = GIT_PROXY_HTTP;
+	g_options.fetch_opts.proxy_opts.url = _remote_proxy_url;
+	g_options.fetch_opts.proxy_opts.credentials = proxy_creds;
+	called_proxy_creds = 0;
+	cl_git_pass(git_clone(&g_repo, "http://github.com/libgit2/TestGitRepository", "./foo", &g_options));
+	cl_assert(called_proxy_creds == 0);
+}
diff --git a/tests/online/fetch.c b/tests/online/fetch.c
index c12df06..827cb23 100644
--- a/tests/online/fetch.c
+++ b/tests/online/fetch.c
@@ -81,11 +81,11 @@ void test_online_fetch__fetch_twice(void)
 {
 	git_remote *remote;
 	cl_git_pass(git_remote_create(&remote, _repo, "test", "git://github.com/libgit2/TestGitRepository.git"));
-	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	cl_git_pass(git_remote_download(remote, NULL, NULL));
     	git_remote_disconnect(remote);
     	
-	git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL);
+	git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL);
 	cl_git_pass(git_remote_download(remote, NULL, NULL));
 	git_remote_disconnect(remote);
 	
@@ -117,7 +117,7 @@ void test_online_fetch__doesnt_retrieve_a_pack_when_the_repository_is_up_to_date
 	cl_git_pass(git_repository_open(&_repository, "./fetch/lg2"));
 
 	cl_git_pass(git_remote_lookup(&remote, _repository, "origin"));
-	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 
 	cl_assert_equal_i(false, invoked);
 
@@ -155,7 +155,7 @@ void test_online_fetch__can_cancel(void)
 	options.callbacks.transfer_progress = cancel_at_half;
 	options.callbacks.payload = &bytes_received;
 
-	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	cl_git_fail_with(git_remote_download(remote, NULL, &options), -4321);
 	git_remote_disconnect(remote);
 	git_remote_free(remote);
@@ -169,7 +169,7 @@ void test_online_fetch__ls_disconnected(void)
 
 	cl_git_pass(git_remote_create(&remote, _repo, "test",
 				"http://github.com/libgit2/TestGitRepository.git"));
-	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	cl_git_pass(git_remote_ls(&refs, &refs_len_before, remote));
 	git_remote_disconnect(remote);
 	cl_git_pass(git_remote_ls(&refs, &refs_len_after, remote));
@@ -187,7 +187,7 @@ void test_online_fetch__remote_symrefs(void)
 
 	cl_git_pass(git_remote_create(&remote, _repo, "test",
 				"http://github.com/libgit2/TestGitRepository.git"));
-	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL));
+	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH, NULL, NULL, NULL));
 	git_remote_disconnect(remote);
 	cl_git_pass(git_remote_ls(&refs, &refs_len, remote));
 
diff --git a/tests/online/push.c b/tests/online/push.c
index 77c4376..f72b4f8 100644
--- a/tests/online/push.c
+++ b/tests/online/push.c
@@ -372,7 +372,7 @@ void test_online_push__initialize(void)
 
 	record_callbacks_data_clear(&_record_cbs_data);
 
-	cl_git_pass(git_remote_connect(_remote, GIT_DIRECTION_PUSH, &_record_cbs, NULL));
+	cl_git_pass(git_remote_connect(_remote, GIT_DIRECTION_PUSH, &_record_cbs, NULL, NULL));
 
 	/* Clean up previously pushed branches.  Fails if receive.denyDeletes is
 	 * set on the remote.  Also, on Git 1.7.0 and newer, you must run