[🐛 Bug]: There is already one outstanding 'SendAsync' call for this WebSocket instance

[nvborisenko]

What happened?

I am trying to communicate with browser concurrently via CDP.
.Net Framework 4.8

How can we reproduce the issue?

var driver = new ChromeDriver();

driver.Url = "https://google.com";

var dev = driver.GetDevToolsSession();

var tasks = new List<Task>();

for (int i = 0; i < 10; i++)
{
    tasks.Add(Task.Run(async () => await dev.Domains.Network.EnableNetwork()));
}

Task.WaitAll(tasks.ToArray());

Relevant log output

Unhandled Exception: System.AggregateException: One or more errors occurred. ---> System.InvalidOperationException: There is already one outstanding 'SendAsync' call for this WebSocket instance. ReceiveAsync and SendAsync can be called simultaneously, but at most one outstanding operation for each of them is allowed at the same time.
   at System.Net.WebSockets.WebSocketBase.<SendAsyncCore>d__47.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at OpenQA.Selenium.DevTools.WebSocketConnection.<SendData>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at OpenQA.Selenium.DevTools.DevToolsSession.<SendCommand>d__35.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at OpenQA.Selenium.DevTools.DevToolsSession.<SendCommand>d__34`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at OpenQA.Selenium.DevTools.V116.Network.NetworkAdapter.<Enable>d__107.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at OpenQA.Selenium.DevTools.V116.V116Network.<EnableNetwork>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Program.<>c__DisplayClass0_0.<<Main>b__0>d.MoveNext() in D:\Temp\ConsoleApp27\ConsoleApp27\Program.cs:line 20
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.WaitAll(Task[] tasks, Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.WaitAll(Task[] tasks, Int32 millisecondsTimeout)
   at System.Threading.Tasks.Task.WaitAll(Task[] tasks)

### Operating System

Windows 11

### Selenium version

4.12.2

### What are the browser(s) and version(s) where you see this issue?

Chrome 116

### What are the browser driver(s) and version(s) where you see this issue?

Selenium Manager

### Are you using Selenium Grid?

_No response_

[github-actions]

@nvborisenko, thank you for creating this issue. We will troubleshoot it as soon as we can.

---

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[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.