Add a way to toggle proxy usage while running.

config.def.h

@@ -127,6 +127,7 @@ static Key keys[] = {
 	{ MODKEY|GDK_SHIFT_MASK,GDK_m,      togglestyle, { 0 } },
 	{ MODKEY|GDK_SHIFT_MASK,GDK_b,      togglescrollbars, { 0 } },
 	{ MODKEY|GDK_SHIFT_MASK,GDK_g,      togglegeolocation, { 0 } },
+	{ MODKEY|GDK_SHIFT_MASK,GDK_y,      toggleproxy, { 0 } },
 };
 
 /* button definitions */
@@ -139,3 +140,4 @@ static Button buttons[] = {
 	{ ClkAny,       0,          8,      navigate,       { .i = -1 } },
 	{ ClkAny,       0,          9,      navigate,       { .i = +1 } },
 };
+

surf.1

@@ -221,6 +221,9 @@ Toggle script execution. This will reload the page.
 Toggle the enabling of plugins on that surf instance. This will reload the
 page.
 .TP
+.B Ctrl\-Shift\-y
+Toggle if a proxy should be used (if one is set in the environment).
+.TP
 .B F11
 Toggle fullscreen mode.
 .SH INDICATORS OF OPERATION

surf.c

@@ -198,6 +198,7 @@ static void scroll_v(Client *c, const Arg *arg);
 static void scroll(GtkAdjustment *a, const Arg *arg);
 static void setatom(Client *c, int a, const char *v);
 static void setup(void);
+static void setup_proxy(void);
 static void sigchld(int unused);
 static void sighup(int unused);
 static void source(Client *c, const Arg *arg);
@@ -208,6 +209,7 @@ static void titlechangeleave(void *a, void *b, Client *c);
 static void toggle(Client *c, const Arg *arg);
 static void togglecookiepolicy(Client *c, const Arg *arg);
 static void togglegeolocation(Client *c, const Arg *arg);
+static void toggleproxy(Client *c, const Arg *arg);
 static void togglescrollbars(Client *c, const Arg *arg);
 static void togglestyle(Client *c, const Arg *arg);
 static void updatetitle(Client *c);
@@ -1323,7 +1325,6 @@ void
 setup(void)
 {
 	int i;
-	char *proxy, *new_proxy, *no_proxy, **new_no_proxy;
 	char *styledirfile, *stylepath;
 	GProxyResolver *pr;
 	SoupSession *s;
@@ -1399,6 +1400,19 @@ setup(void)
 	g_object_set(G_OBJECT(s), "tls-database", tlsdb, NULL);
 	g_object_set(G_OBJECT(s), "ssl-strict", strictssl, NULL);
 
+	setup_proxy();
+}
+
+void
+setup_proxy(void)
+{
+	char *proxy, *new_proxy, *no_proxy, **new_no_proxy;
+	GProxyResolver *pr;
+	SoupSession *s;
+
+	/* request handler */
+	s = webkit_get_default_session();
+
 	/* proxy */
 	if ((proxy = getenv("http_proxy")) && strcmp(proxy, "")) {
 		new_proxy = g_strrstr(proxy, "http://")
@@ -1416,6 +1430,8 @@ setup(void)
 		g_free(new_proxy);
 		g_strfreev(new_no_proxy);
 		usingproxy = 1;
+	} else {
+		usingproxy = 0;
 	}
 }
 
@@ -1480,6 +1496,7 @@ void
 titlechange(WebKitWebView *view, GParamSpec *pspec, Client *c)
 {
 	const gchar *t = webkit_web_view_get_title(view);
+
 	if (t) {
 		c->title = copystr(&c->title, t);
 		updatetitle(c);
@@ -1557,6 +1574,25 @@ twitch(Client *c, const Arg *arg)
 	gtk_adjustment_set_value(a, v);
 }
 
+void
+toggleproxy(Client *c, const Arg *arg)
+{
+	SoupSession *s;
+
+	/* request handler */
+	s = webkit_get_default_session();
+
+	if (usingproxy) {
+		g_object_set(G_OBJECT(s), "proxy-resolver", NULL, NULL);
+		usingproxy = 0;
+	} else {
+		setup_proxy();
+	}
+
+	updatetitle(c);
+	/* Do not reload. */
+}
+
 void
 togglescrollbars(Client *c, const Arg *arg)
 {