toproxy 0.2

tornado asynchronous HTTP proxy

### 介绍

用tornado实现的高性能代理服务器，涵盖了基本的method , 性能方面经过我的测试，他每秒平均在300个访问,如果在tornado加入threadpool逻辑，并发估计会破1k 。

[toproxy 更多介绍](http://xiaorui.cc "xiaorui.cc")

### 原理
我解析你的访问，然后用request代你访问，然后返回结果
当然在协议上来说，这虽然不是最高性能的方法，但是最有效的方法.... 如果是底层的socket来写，我首先需要解析你的各种各样的header请求，然后还要考虑多任务的模块，或 prefork 或 异步模式， 这都是开发的成本。 我这里是用tornado这异步框架，本身解决了各个流程的堵塞问题，然又用异步的 httpclient,避免了我请求url时的堵塞。

更多的httpclient文档，[httpclient 更多文档](http://tornado.readthedocs.org/en/latest/httpclient.html "tornado httpclient")

### 安装
依赖tornado
python setup.py install

### 直接使用

python toproxy 8888


### 模块的调用

from toproxy import run_proxy
run_proxy(port, start_ioloop=False)
...
tornado.ioloop.IOLoop.instance().start()


### test
curl -vvv -x xiaorui.cc:8888 http://www.google.com

ab -X xiaorui.cc:8888 -c 200 -n 1000 http://www.hao123.com/

```
his is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.hao123.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software: BWS/1.0
Server Hostname: www.hao123.com
Server Port: 80

Document Path: /
Document Length: 750380 bytes

Concurrency Level: 200
Time taken for tests: 7.967 seconds
Complete requests: 1000
Failed requests: 10
(Connect: 0, Receive: 0, Length: 10, Exceptions: 0)
Write errors: 0
Total transferred: 752184936 bytes
HTML transferred: 751671400 bytes
Requests per second: 125.52 [#/sec] (mean)
Time per request: 1593.406 [ms] (mean)
Time per request: 7.967 [ms] (mean, across all concurrent requests)
Transfer rate: 92199.44 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 24 40 94.6 31 1034
Processing: 289 1371 786.8 1223 4028
Waiting: 46 57 27.8 55 663
Total: 317 1411 791.2 1276 4059

Percentage of the requests served within a certain time (ms)
50% 1276
66% 1751
75% 2030
80% 2208
90% 2510
95% 2768
98% 3187
99% 3389
100% 4059 (longest request)
```

### todo
1. 提高toproxy的性能
2. 加入重试机制
3. 加入异步回调通知模式