watchOS 9 on device websocket failure

WatchOS9Websockets.swift

// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import SwiftUI

struct ContentView: View {
  var body: some View {
    Text("Websockets are broken in watchOS 9")
      .task {
        let url = URL(string: "wss://ws.postman-echo.com/raw")!
        let task = URLSession.shared.webSocketTask(with: url)
        task.resume() // Needed before the async send/receive calls.

        // Send. This works on the watchOS simulator but fails on real devices running watchOS 9.
        do {
          // This logs `NSPOSIXErrorDomain` code `19` ("Operation not supported by device") on a real device
          // running watchOS 9.
          try await task.send(.string("echo"))
          print("Message send successful")
        } catch {
          // This returns `NSURLErrorDomain` code `-1009` "The Internet connection appears to be offline"
          // on a real device running watchOS 9.
          print("Error sending: \(error)")
          return
        }
      }
  }
}

XcodeConsole.txt

2022-09-16 09:41:54.409680-0400 watchOS9Websockets Watch App[968:637619] Connection 1: received failure notification
2022-09-16 09:41:54.410650-0400 watchOS9Websockets Watch App[968:637619] Connection 1: failed to connect 1:50, reason -1
2022-09-16 09:41:54.410679-0400 watchOS9Websockets Watch App[968:637619] Connection 1: encountered error(1:50)
2022-09-16 09:41:54.432645-0400 watchOS9Websockets Watch App[968:637613] Error getting network data status Error Domain=NSPOSIXErrorDomain Code=19 "Operation not supported by device"
2022-09-16 09:41:54.432850-0400 watchOS9Websockets Watch App[968:637613] Task <7AA472C9-8847-4D10-B15D-EA7C970BE6F0>.<1> HTTP load failed, 0/0 bytes (error code: -1009 [1:50])
2022-09-16 09:41:54.445194-0400 watchOS9Websockets Watch App[968:637619] Task <7AA472C9-8847-4D10-B15D-EA7C970BE6F0>.<1> finished with error [-1009] Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline." UserInfo={NSErrorFailingURLStringKey=https://ws.postman-echo.com/raw, NSErrorFailingURLKey=https://ws.postman-echo.com/raw, NSLocalizedDescription=The Internet connection appears to be offline., _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalWebSocketTask <7AA472C9-8847-4D10-B15D-EA7C970BE6F0>.<1>"
), _NSURLErrorFailingURLSessionTaskErrorKey=LocalWebSocketTask <7AA472C9-8847-4D10-B15D-EA7C970BE6F0>.<1>}
Error sending: Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline." UserInfo={NSErrorFailingURLKey=https://ws.postman-echo.com/raw, NSErrorFailingURLStringKey=https://ws.postman-echo.com/raw, NSLocalizedDescription=The Internet connection appears to be offline.}