# HttpProxy
[](https://travis-ci.org/KazuCocoa/http_proxy)
[](https://hex.pm/packages/http_proxy)
Simple multi HTTP Proxy using Plug. And support record/play requests.
# MY GOAL
- Record/Play proxied requests
- http_proxy support multi port and multi urls on one execution command `mix proxy`.
- Support VCR
# Quick use as http proxy
## requirement
- Elixir over 1.2
## set application and deps
- `mix.exs`
- `:logger` is option.
- `:http_proxy` is not need if you run http_proxy with `HttpProxy.start/0` or `HttpProxy.stop/0` manually.
```elixir
def application do
[applications: [:logger, :http_proxy]]
end
...
defp deps do
[
{:http_proxy, "~> 1.0.1"}
]
end
```
## set configure
- `config/config.exs`
```
use Mix.Config
config :http_proxy,
proxies: [
%{port: 8080, # proxy all request even play or record
to: "http://google.com"},
%{port: 8081,
to: "http://yahoo.com"}
]
```
- To manage logger, you should define logger settings like the following.
```
config :logger, :console,
level: :info
```
## solve deps and run server
```
$ mix deps.get
$ mix clean
$ mix run --no-halt # start proxy server
```
If you would like to start production mode, you should run with `MIX_ENV=prod` like the following command.
```
$ MIX_ENV=prod mix run --no-halt
```
## launch browser
Launch browser and open `http://localhost:8080` or `http://localhost:8081`.
# Configuration
- When `:record` and `:play` are `false`, then the http_proxy works just multi port proxy.
- When `:record` is `true`, then the http_proxy works to record request which is proxied.
- When `:play` is `true`, then the http_proxy works to play request between this the http_proxy and clients.
- You should set JSON files under `mappings` in `play_path`.
```elixir
use Mix.Config
config :http_proxy,
proxies: [ # MUST
%{port: 8080, # proxy all request even play or record
to: "http://google.com"},
%{port: 8081,
to: "http://yahoo.com"}
]
timeout: 20_000, # Option, ms
record: false, # Option, true: record requests. false: don't record.
play: false, # Option, true: play stored requests. false: don't play.
export_path: "test/example", # Option
play_path: "test/data" # Option
```
## Example
### Record request as the following
```json
{
"request": {
"headers": [],
"method": "GET",
"options": {
"aspect": "query_params"
},
"remote": "127.0.0.1",
"request_body": "",
"url": "http://localhost:8080/hoge/inu?email=neko&pass=123"
},
"response": {
"body_file": "path/to/body_file.json",
"cookies": {},
"headers": {
"Cache-Control": "public, max-age=2592000",
"Content-Length": "251",
"Content-Type": "text/html; charset=UTF-8",
"Date": "Sat, 21 Nov 2015 00:37:38 GMT",
"Expires": "Mon, 21 Dec 2015 00:37:38 GMT",
"Location": "http://www.google.com/hoge/inu?email=neko&pass=123",
"Server": "sffe",
"X-Content-Type-Options": "nosniff",
"X-XSS-Protection": "1; mode=block"
},
"status_code": 301
}
}
```
Response body will save in "path/to/body_file.json".
### Play request with the following JSON data
- Example is https://github.com/KazuCocoa/http_proxy/tree/master/test/data/mappings
- You can set `path` or `path_pattern` as attribute under `request`.
- If `path`, the http_proxy check requests are matched completely.
- If `path_pattern`, the http_proxy check requests are matched with Regex.
- You can set `body` or `body_file` as attribute under `response`.
- If `body`, the http_proxy send the body string.
- If `body_file`, the http_proxy send the body_file binary as response.
#### `path` and `body` case
```json
{
"request": {
"path": "/request/path",
"port": 8080,
"method": "GET"
},
"response": {
"body": "<html>hello world</html>",
"cookies": {},
"headers": {
"Content-Type": "text/html; charset=UTF-8",
"Server": "GFE/2.0"
},
"status_code": 200
}
}
```
#### `path_pattern` and `body_file` case
- Pattern match with `Regex.match?(Regex.compile!("\A/request.*neko\z"), request_path)`
- `File.read/2` via `file/to/path.json` and respond the binary
```json
{
"request": {
"path_pattern": "\A/request.*neko\z",
"port": 8080,
"method": "GET"
},
"response": {
"body_file": "file/to/path.json",
"cookies": {},
"headers": {
"Content-Type": "text/html; charset=UTF-8",
"Server": "GFE/2.0"
},
"status_code": 200
}
}
```
# TODO
- [x] record request
- [x] play request
- [x] refactor
- [x] support Regex request path.
- [x] start/stop http_proxy manually
- [ ] use vcr <= a bit...
- integrate https://github.com/parroty/exvcr
# styleguide
http://elixir.community/styleguide
# LICENSE
MIT. Please read LICENSE.
