Method proxy

3rdparty/libprocess/src/process.cpp:1731–1760

PID<HttpProxy> SocketManager::proxy(const Socket& socket)
{
  HttpProxy* proxy = nullptr;

  synchronized (mutex) {
    // This socket might have been asked to get closed (e.g., remote
    // side hang up) while a process is attempting to handle an HTTP
    // request. Thus, if there is no more socket, return an empty PID.
    if (sockets.count(socket) > 0) {
      if (proxies.count(socket) > 0) {
        return proxies[socket]->self();
      } else {
        proxy = new HttpProxy(sockets.at(socket));
        proxies[socket] = proxy;
      }
    }
  }

  // Now check if we need to spawn a newly created proxy. Note that we
  // need to do this outside of the synchronized block above to avoid
  // a possible deadlock (because spawn eventually synchronizes on
  // ProcessManager and ProcessManager::cleanup synchronizes on
  // ProcessManager and then SocketManager, so a deadlock results if
  // we do spawn within the synchronized block above).
  if (proxy != nullptr) {
    return spawn(proxy, true);
  }

  return PID<HttpProxy>();
}


void SocketManager::unproxy(const Socket& socket)