Connection reset problem on Echo sample

[rezacute]

After compiling latest master branch, I ran echo server and got connection reset.
Perviously it was OK.
Below is the response.

* About to connect() to localhost port 11000 (#0)
*   Trying 127.0.0.1...
* Adding handle: conn: 0x87e5ad8
* Adding handle: send: 0
* Adding handle: recv: 0
* Curl_addHandleToPipeline: length: 1
* - Conn 0 (0x87e5ad8) send_pipe: 1, recv_pipe: 0
* Connected to localhost (127.0.0.1) port 11000 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.33.0
> Host: localhost:11000
> Accept: */*
> 
* Recv failure: Connection reset by peer
* Closing connection 0
curl: (56) Recv failure: Connection reset by peer

[rezacute]

It caused by the firewall on my docker environment fixed by adding -h http://localhost:11000 .