How to fix `curl: (52) Empty reply from server` response on localhost?

Question

The problem is in my setting, because I am accessing localhost.

When I execute in terminal:

curl http://localhost

The response is:

curl: (52) Empty reply from server

But it should say:

curl: (7) Failed to connect to localhost port 80: Connection refused

UPDATE:

When I execute

curl http://localhost:3000

The response is:

curl: (7) Failed to connect to localhost port 3000: Connection refused

UPDATE(2)

sudo lsof -i :80

COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME

acwebseca 42015 root 36u IPv4 0x2e120362d0318e9b 0t0 TCP

192.168.0.109:52299->151.101.129.69:http (ESTABLISHED) ...

Do you have any ideas ?

Possible duplicate of [Curl Error 52 Empty reply from server](http://stackoverflow.com/questions/1924434/curl-error-52-empty-reply-from-server) — kbariotis, Feb 09 '17 at 15:07
Yeap, I may rushed to flag your question. Why are you expecting to see curl :(7)? — kbariotis, Feb 09 '17 at 15:19
Ok, obviously there is something running and listening to your local 80 port. Like a proxy or a server. Can you remember if you have started a service or something? — kbariotis, Feb 09 '17 at 15:38
@ssc-hrep3 yes you are right, but after I kill it it appears again( — Denys Medynskyi, Feb 09 '17 at 15:42
[`netstat -tulpn | grep --color :80`](https://www.cyberciti.biz/faq/find-linux-what-running-on-port-80-command/) — ssc-hrep3, Feb 09 '17 at 15:46
@ssc-hrep3 I found the process and killed the programme. Thanks guys — Denys Medynskyi, Feb 09 '17 at 15:47

score 0 · Answer 1 · answered Feb 09 '17 at 15:48

0

I had application which was constantly restarting on port 80. I uninstalled the application and it solved it

answered Feb 09 '17 at 15:48

Denys Medynskyi

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score 0 · Answer 2 · answered Oct 06 '17 at 22:09

Check port conflict with following command (Mac) and close applications using same port:

lsof -n -i4TCP:$PORT | grep LISTEN
lsof -n -iTCP:$PORT | grep LISTEN
lsof -n -i:$PORT | grep LISTEN

Substitute $PORT with the port number or a comma-separated list of port numbers.

Prepend sudo (followed by a space) if you need information on ports below #1024.

How to fix `curl: (52) Empty reply from server` response on localhost?

2 Answers2