hop

README

hop

A stupid web service which can do stupid things told by the url.

Usage

• $ hop --help

• $ PORT=8000 hop Serving on 8000

• $ curl box1:8000/-wait:1000/box2:8000/-rheader:a=b

| I am box1, will do /-wait:1000/box2:8000/-rheader:a=b
| Waited for 1000 ms
| Called http://box2:8000/-rheader:a=b with status 200 OK
| With data:
| . | I am box2, will do /-rheader:a=b
| . | Will return header a: b
| . 

Supported commands

• $ curl hop/-help

• -info - return some info about the request

• -rheader:H=V - add header H: V to the reponse

• -code:N - responde with HTTP code N

• -help - return help message

• -if:H=V - execute next command if header H contains substring V

• -on:H - executes next command if the server host name contains substring H

• -quit - stops the server with a nice response

• -size:B - add B bytes of payload to the response

• -not - reverts the effect of the next boolean command (if, on)

• -rnd:P - execute next command with P% probability

• -wait:T - wait for T ms before response

• -crash - stops the server without a response

• -fheader:H - forward incoming header H to the following request

• -header:H=V - add header H: V to the following request

• -env:V - return the value of an environment variable

Examples:

Call hop1 which will show some details of the request

curl -H "a: b" hop1/-info

Call hop1 which will call hop2 with forwarded header A

curl -H "a: b" hop1/-fheader:a/hop2

Call hop1 which will call hop2 or hop3 (50%). hop2 would call hop3 and return error code 500

curl hop1/-rnd:50/hop2/hop3/-on:hop2/-code:500