Luc Fabresse wrote:

2014-06-14 6:04 GMT+02:00 Ben Coman <btc@openinworld.com>:

Luc Fabresse wrote:

Hi,

I experiencing a strange difference between localhost and 127.0.0.1.

In Pharo I do:

(ZnServer startDefaultOn: 4444)

�� �� onRequestRespond: [ :request | ZnResponse ok: (ZnEntity text: 'hello') ]

In bash:

$ lsof -Pi | grep Pharo

Pharo �� �� 2718 ��luc �� ��7u ��IPv4 0x1e64a2e9381f409b �� �� ��0t0 ��TCP *:4444 (LISTEN)

I perfectly listen on port 4444 from all interfaces *

$ curl http://127.0.0.1:4444

hello

$ curl http://localhost:4444

curl: (7) Failed to connect to localhost port 4444: Connection refused �� �� �� �� �� �� �� �� �� �� <- why ?

localhost is correctly resolved on my mac

$ ping localhost

PING localhost (127.0.0.1): 56 data bytes

64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.044 ms

I tested with other programs than Zinc to open listening sockets and it works.

Any idea?

#Luc

maybe http://sourceforge.net/p/curl/bugs/1337/

Humm, I use curl 7.36.0, so yes perhaps this bug fix is not integrated...

Anyway, I was also suspecting curl but I tested with server: Apache on port 8888 and here curl works:

httpd �� �� 621 ��luc �� ��5u ��IPv6 0x6ea19c1d988f10db �� �� ��0t0 ��TCP *:8888 ��<-- same as Zinc

Yes. If the *:8888 means that Apache was listening on "all" IP addresses rather than just 127.0.0.1, then as you can see it was an IPv6 address that curl connected to.��

btw, What do you get from `nslookup localhost` ?

Anyway, the question then becomes... How well does Pharo / Zinc play with IPv6 ?��

cheers -ben

but both:

curl http://127.0.0.1:8888

curl http://localhost:8888

are working.

wget always works (Apache and Zinc):

wget -qO- http://127.0.0.1:8888

wget -qO- http://localhost:8888

Thanks Max and Ben,

Luc