display: Only use display channel with id 0

spice-html5 does not support multiple display channels, and will only
use the first one offered by spice-server, and ignore the others. This
can cause issues when using a VM with a configured but unused
org.spice-space.stream.0 spice port as this will create a 'fake' display
channel which is offered by spice-server before the usual qxl display
channel.
This commit favours the display channel with id 0 rather than picking
the first one.

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/main.js b/main.js
index 173ff97..6976f9c 100644
--- a/main.js
+++ b/main.js
@@ -146,10 +146,11 @@ SpiceMainConn.prototype.process_channel_message = function(msg)
                     };
             if (chans.channels[i].type == SPICE_CHANNEL_DISPLAY)
             {
-                if (this.display !== undefined)
-                    this.log_warn("The spice-html5 client does not handle multiple heads.");
-                else
+                if (chans.channels[i].id == 0) {
                     this.display = new SpiceDisplayConn(conn);
+                } else {
+                    this.log_warn("The spice-html5 client does not handle multiple heads.");
+                }
             }
             else if (chans.channels[i].type == SPICE_CHANNEL_INPUTS)
             {