Multicast sample has invalid permissions. about chrome-extensions-samples

[Robbert]

"sockets": {
  "udp": {
    "bind": "*",
    "send": "*",
    "multicastMembership": ""
  }
}

The empty string value for "multicastMembership" isn't obvious at all, I had to resort to reading the C++ unit tests to find out the correct value.

The manifest.json documentation states the value requires a "host:port" value, but "*" and any other valid host:port value is regarded invalid.
https://developer.chrome.com/apps/manifest/sockets
https://chromium.googlesource.com/chromium/chromium/+/6697478358bc016fd5acffdb1401d79f405713f5/chrome/common/extensions/api/manifest_types.json

These are unit tests:
https://code.google.com/p/chromium/codesearch#chromium/src/extensions/common/api/sockets/sockets_manifest_permission_unittest.cc&q=multicastMembership&sq=package:chromium&dr=C&l=264

[beaufortfrancois]

@Robbert Thank you for your feedback.

@ikarienator It looks this sample App still uses the old chrome.socket API with the deprecated way of setting permission ;( Would you have time to upgrade this App?

@rpaquay May you update the official documentation at https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/templates/articles/manifest/sockets.html so that it's more clear regarding the multicastMembership value?

[beaufortfrancois]

@Robbert The "multicastMembership" option is now shown at https://developer.chrome.com/apps/manifest/sockets

I will update soon the mutilcast sample app based on @rpaquay's work.

[beaufortfrancois]

For info, there is an issue on Chrome OS: http://crbug.com/233052.
The firewall seems to block chrome.sockets.

[beaufortfrancois]

Multicast sample has been updated to use the new chrome.sockets.udp API.
Please reopen if you're still experiencing any issue.