Easily produced 'Worker Crash' with many simple concurrent http requests

[lemire]

It is fairly easy to get 'Worker Crash' by stressing the server with, say, 10,000 simultaneous requests. The exact error is:

[Error ]: Worker Crash: An uncaught exception occured: remote endpoint: Transport endpoint is not connected

I have a simple demonstration.

Use a simpler server:

#include "crow.h"
int main() {
  crow::SimpleApp app;
  app.loglevel(crow::LogLevel::Warning);
  CROW_ROUTE(app, "/simple")([](){
    return "Hello world";
  });
  app.port(18080).multithreaded().run();
}

Then just issue a massive number of requests...

bombardier -c 10000 http://localhost:18080/simple

I am not getting similar failures with all other frameworks on the same system.

I am not claiming that it is a bug. This might very well be the desired/expected result as I am definitively stressing the server... and it is fine to have failed requests when under stress.

Feel free to close this issue if you think that there is no concern.

This might be related to #549