In a ProxiedDevicePortForwarder, there might be a race condition where the local socket has been disconnected, but the remote end was still sending new data. In this case, avoid forwarding new data to the socket.
Also move the vm service discovery logic into platform-specific implementation of `Device`s. This is to avoid having platform-specific code in attach.dart.
There are two issues in the previous implementation:
1. `_populateDevices` will return the devices from `deviceNotifier` if it had been initialized, assuming that once it's initialized, it has been properly populated. That assumption is not true because calling getters like `onAdded` would initialize `deviceNotifier` without populating it.
2. `deviceNotifier` instance might be replaced in some cases, causing `onAdded` subscribers to lose any future updates.
To fix (1), this commit added the `isPopulated` field in `deviceNotifier` as a more accurate flag to determine if we need to populate it.
To fix (2), this commit made `deviceNotifier` a final member in `PolingDeviceDiscovery`.
A ProxiedDevice has two port forwarder, one to forward remote host port and another to forward remote device port. During an attach workflow, the port was forwarded by the latter. Update ProxiedDDS to make sure that it works in such case.
Originally, my aim was just to refactor (as per usual), but while messing around with the `TableBorder.symmetric` constructor, I realized that `borderRadius` was missing!
This pull request makes a few class constructors more efficient, and it fixes#144277 by adding the missing parameter.
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List of changes:
1. Optimizations in FileTransfer. a. Use `stream.forEach` instead of `await for`. b. Type cast `List<int>` to `Uint8List` instead of using `Uint8List.fromList` results in (presumably) fewer copy and faster execution. c. Iterate through `Uint8List` with regular for loop instead of for-in loop.
2. Precache the block hashes of a file, and reuse it on subsequent runs.
The daemon ignores all device discovery that is not a PollingDeviceDiscovery. Make ProxiedDevices a PollingDeviceDiscovery so that it can be used in flutter daemon.
Note that there is a TODO item added in the test, which I intend to attempt fixing in a subsequent PR.
