NodeJs-Bootcamp-Proxy-Server

Code for Project 0: Proxy Server

Author : Nguyen Viet Pham

Time spent: [4 hours]

Completed:

[done] Required: Requests to port 8000 are echoed back with the same HTTP headers and body
[done] Required: Requests/reponses are proxied to/from the destination server
[done] Required: The destination server is configurable via the --host, --port or --url arguments
[done] Required: The destination server is configurable via the x-destination-url header
[done] Required: Client requests and respones are printed to stdout
[done] Required: The --logfile argument outputs all logs to the file specified instead of stdout
[TO DO] Optional: The --exec argument proxies stdin/stdout to/from the destination program
[TO DO] Optional: The --loglevel argument sets the logging chattiness
[TO DO] Optional: Supports HTTPS
[TO DO] Optional: -h argument prints CLI API

Walkthrough Gif:

Javascripting Workshop:

Learnyounode Workshop:

Starting the Server: npm start

Features:

Echo Server:

curl -v -X POST http://127.0.0.1:8000 -d "hello self" -H "x-asdf: yodawg
Note: Unnecessary use of -X or --request, POST is already inferred.
* Rebuilt URL to: http://127.0.0.1:8000/
*   Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 8000 (#0)
> POST / HTTP/1.1
> Host: 127.0.0.1:8000
> User-Agent: curl/7.47.0
> Accept: */*
> x-asdf: yodawg
> Content-Length: 10
> Content-Type: application/x-www-form-urlencoded
> 
* upload completely sent off: 10 out of 10 bytes
< HTTP/1.1 200 OK
< host: 127.0.0.1:8000
< user-agent: curl/7.47.0
< accept: */*
< x-asdf: yodawg
< content-length: 10
< content-type: application/x-www-form-urlencoded
< Date: Sun, 25 Sep 2016 16:36:03 GMT
< Connection: keep-alive
< 
* Connection #0 to host 127.0.0.1 left intact
hello self

Proxy Server:

Port 8001 will proxy to the echo server on port 8000.

curl -v -X POST http://127.0.0.1:8001 -d "hello self" -H "x-asdf: yodawg"
*   Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 8001 (#0)
> POST /asdf HTTP/1.1
> Host: 127.0.0.1:8001
> User-Agent: curl/7.47.0
> Accept: */*
> Content-Length: 11
> Content-Type: application/x-www-form-urlencoded
> 
* upload completely sent off: 11 out of 11 bytes
< HTTP/1.1 200 OK
< host: 127.0.0.1:8001
< user-agent: curl/7.47.0
< accept: */*
< content-length: 11
< content-type: application/x-www-form-urlencoded
< connection: close
< date: Sun, 25 Sep 2016 16:37:30 GMT
< 
* Closing connection 0
hello proxy

Configuration: CLI Arguments:

The following CLI arguments are supported: --host

The host of the destination server. Defaults to 127.0.0.1. --port

The port of the destination server. Defaults to 80 or 8000 when a host is not specified. --url

A single url that overrides the above. E.g., http://www.google.com --logfile

Specify a file path to redirect logging to. Headers

The follow http header(s) are supported: x-destination-url

Specify the destination url on a per request basis. Overrides and follows the same format as the --url argument.