3 ms·

The Server: cowboy tag is from an Erlang web server: https://github.com/ninenines/cowboy/blob/master/src/cowboy_protocol.erl#L177 https://github.com/ninenines/

by spydum 12y ago

The Server: cowboy tag is from an Erlang web server: https://github.com/ninenines/cowboy/blob/master/src/cowboy_protocol.erl#L177 https://github.com/ninenines/cowboy/blob/master/src/cowboy_p... I'm guessing around here would be interesting to add a test case to handle. As far as whose server this is? I'd guess Heroku or AWS, though it's plenty possible T-Mobile could have devised some proxy to inspect traffic, but seems unlikely they would do so with Cowboy?

lostcolony 12y ago
T-mobile is known to have, in the past at least, used Erlang. And Cowboy is one of the most popular web servers within that community at this point.
mischanix 12y ago
It's simple enough to single out Heroku: $ cat <<EOF | nc example.herokuapp.com 80 GET /test HTTP/1.1 EOF ---- HTTP/1.1 505 HTTP Version Not Supported
- davidw 12y ago
  Heroku use Erlang: http://www.erlang-in-anger.com/ http://www.erlang-in-anger.com/
- 3ds 12y ago
  Your example fails with or without the whitespace. These work though: Request printf 'GET / HTTP/1.1\r\nHost: example.herokuapp.com\r\n\r\n' | nc example.herokuapp.com 80 Response HTTP/1.1 200 OK Connection: keep-alive Server: SimpleHTTP/0.6 Python/2.7.6 Request printf 'GET / HTTP/1.1\r\nHost: example.herokuapp.com\r\n\r\n' | nc example.herokuapp.com 80 Response HTTP/1.1 505 HTTP Version Not Supported Connection: close Server: Cowboy
  - mischanix 12y ago
    Ah right, forgot about the newline specification. I guess, for reference, the smallest string I can come up with to get Cowboy to spit that error message is '\x20\x20\n'. Parsers are fun.
ams6110 12y ago
Erlang is from Ericson, a telecom company. T-Mobile is a telecom company. Doesn't seem a stretch that they would use erlang.
jimrhoskins 12y ago
Didn't heroku turn off legacy routing last week? I was getting emails warning me to update to their new routing rules by Monday. Seems like it could be related.

by spydum 12y ago

lostcolony 12y ago

T-mobile is known to have, in the past at least, used Erlang. And Cowboy is one of the most popular web servers within that community at this point.

mischanix 12y ago

It's simple enough to single out Heroku: $ cat <<EOF | nc example.herokuapp.com 80 GET /test HTTP/1.1 EOF ---- HTTP/1.1 505 HTTP Version Not Supported

davidw 12y ago
Heroku use Erlang: http://www.erlang-in-anger.com/ http://www.erlang-in-anger.com/
3ds 12y ago
Your example fails with or without the whitespace. These work though: Request printf 'GET / HTTP/1.1\r\nHost: example.herokuapp.com\r\n\r\n' | nc example.herokuapp.com 80 Response HTTP/1.1 200 OK Connection: keep-alive Server: SimpleHTTP/0.6 Python/2.7.6 Request printf 'GET / HTTP/1.1\r\nHost: example.herokuapp.com\r\n\r\n' | nc example.herokuapp.com 80 Response HTTP/1.1 505 HTTP Version Not Supported Connection: close Server: Cowboy
- mischanix 12y ago
  Ah right, forgot about the newline specification. I guess, for reference, the smallest string I can come up with to get Cowboy to spit that error message is '\x20\x20\n'. Parsers are fun.

ams6110 12y ago

Erlang is from Ericson, a telecom company. T-Mobile is a telecom company. Doesn't seem a stretch that they would use erlang.

jimrhoskins 12y ago

Didn't heroku turn off legacy routing last week? I was getting emails warning me to update to their new routing rules by Monday. Seems like it could be related.