HAR Server

Simple programmable HTTP API server.

The server is programmable using elements from the HTTP Archive (HAR) specification originally developed by Jan Odvarko and the W3C web-performance working group. It was never moved beyond draft in the W3C. Jan Odvarko has maintained the specification on his blog. I created this project after discovering the mockbin service created by Mashape (now KongHQ). Unfortunately mockbin does not meet my exact needs.

Usage

The primary use case is to return programmed responses to specified requests. The response is POSTed to service along with a matching request. Both are specified as HAR objects -- the request is a HAR request and the response is a HAR response

POST /responses HTTP/1.1
Host: 127.0.0.1:8080
Content-Type: application/json
Content-Length: 733

{
   "request": {
      "method": "GET",
      "url": "http://example.org/status",
      "httpVersion": "HTTP/1.1",
      "cookies": [],
      "headers": [],
      "queryString": [],
      "postData": {},
      "headersSize": -1,
      "bodySize": 0
   },
   "response": {
      "status": 200,
      "statusText": "OK",
      "httpVersion": "HTTP/1.1",
      "cookies": [],
      "headers": [
         {"name":"Content-Type", "value":"application/json"}
      ],
      "content": {
         "mimeType": "application/json",
         "encoding": "json",
         "text": {
            "service": "my-service",
            "status": "ok"
         }
      },
      "redirectURL": "",
      "headersSize": -1,
      "bodySize": -1
   }
}

HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 49
Link: <http://127.0.0.1:8080/hosts>; rel=host-map; method=GET
Link: <http://127.0.0.1:8080/requests>; rel=requests; method=GET
Link: <http://127.0.0.1:8080/responses>; rel=add-response; method=POST
Link: <http://127.0.0.1:8080/responses>; rel=clear-responses;
  method=PURGE

{
   "effective_url": "http://127.0.0.1:32443"
}

After this message is sent, the service will respond to GET /status on port 32443 with the registered response:

GET /status HTTP/1.1
Host: 127.0.0.1:32443

HTTP/1.1 200 OK
Content-Type: application/json

{
  "service": "my-service",
  "status": "ok"
}