* gnu/packages/patches/lightdm-vnc-ipv6.patch: New patch file. * gnu/local.mk (dist_patch_DATA): Register it. * gnu/packages/display-managers.scm (lightdm): Apply it. * gnu/tests/lightdm.scm (run-lightdm-test): Remove comment and expected fail directive for the "can connect to TCP port 5900 on IPv6" test. Suggested-by: Bruno Victal <mirai@makinata.eu>
		
			
				
	
	
		
			48 lines
		
	
	
	
		
			1.8 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			48 lines
		
	
	
	
		
			1.8 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
Submitted upstream: https://github.com/canonical/lightdm/pull/312
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diff --git a/src/vnc-server.c b/src/vnc-server.c
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index d3500764..00a2fc02 100644
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--- a/src/vnc-server.c
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+++ b/src/vnc-server.c
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@@ -126,18 +126,10 @@ vnc_server_start (VNCServer *server)
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     g_return_val_if_fail (server != NULL, FALSE);
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-    g_autoptr(GError) ipv4_error = NULL;
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-    priv->socket = open_tcp_socket (G_SOCKET_FAMILY_IPV4, priv->port, priv->listen_address, &ipv4_error);
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-    if (ipv4_error)
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-        g_warning ("Failed to create IPv4 VNC socket: %s", ipv4_error->message);
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-
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-    if (priv->socket)
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-    {
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-        GSource *source = g_socket_create_source (priv->socket, G_IO_IN, NULL);
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-        g_source_set_callback (source, (GSourceFunc) read_cb, server, NULL);
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-        g_source_attach (source, NULL);
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-    }
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-
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+    // Bind to IPv6 first, as this implies binding to 0.0.0.0 in the
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+    // Linux kernel default configuration, which would otherwise cause
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+    // IPv6 clients to fail with "Error binding to address [::]:5900:
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+    // Address already in use" (#266).
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     g_autoptr(GError) ipv6_error = NULL;
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     priv->socket6 = open_tcp_socket (G_SOCKET_FAMILY_IPV6, priv->port, priv->listen_address, &ipv6_error);
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     if (ipv6_error)
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@@ -150,6 +142,18 @@ vnc_server_start (VNCServer *server)
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         g_source_attach (source, NULL);
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     }
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+    g_autoptr(GError) ipv4_error = NULL;
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+    priv->socket = open_tcp_socket (G_SOCKET_FAMILY_IPV4, priv->port, priv->listen_address, &ipv4_error);
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+    if (ipv4_error)
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+        g_warning ("Failed to create IPv4 VNC socket: %s", ipv4_error->message);
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+
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+    if (priv->socket)
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+    {
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+        GSource *source = g_socket_create_source (priv->socket, G_IO_IN, NULL);
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+        g_source_set_callback (source, (GSourceFunc) read_cb, server, NULL);
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+        g_source_attach (source, NULL);
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+    }
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+
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     if (!priv->socket && !priv->socket6)
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         return FALSE;
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