http-clientp

* 支持基于http、https、proxy的请求
* 支持回调函数附带数据
* 支持设置超时时间
* 支持使用函数返回代理
* 具体用法见test/test.js
* 运行test请先安装mocha
* 运行test请启动本地8888端口的代理,fiddler或者charles或者其他代理都可以

**
httpcontext模板格式：
```
{
"request":{
"proxy":{"host":"127.0.0.1","port":8888},//设置请求代理，共两种设置方式，任选其一即可
"http_proxy":"http://127.0.0.1:8888", //设置请求代理，共两种设置方式，任选其一即可
"headers":{},
"encode":true, //是否对url进行encodeURI操作，默认为true
"timeout":"1000", //请求超时
"postdata":"a=1&b=1" //post请求参数,
options: {
method: 'GET',
path: 'https://www.npmjs.com/package/http-clientp'
}
},
"response":{
"charset":"",//返回编码
"statusCode":200
},
"data":{ //附带数据
"key":"value",
"key1":"value1"
}
}
``
*
* 基础用法
``
var options = {
"method":"GET",
"path":"https://www.baidu.com/"
};
httpClient.request(options, function (err, body, res, httpContext) {
console.log(res.statusCode)
});
**GET
var httpcontext = httpClient.build_httpcontext('GET', {'key': 'value', 'url': 'https://www.baidu.com/'}, null, {'host': '127.0.0.1', 'port': 8888}, 1000);
httpClient.request(httpcontext.request.options, function (err, body, res, httpContext) {
console.log(res.statusCode);
console.log(httpContext.data.key);
console.log(httpContext.data.url);
}, httpcontext);
**POST
var httpcontext = httpClient.build_httpcontext('POST', {
'key': 'value',
'url': test_url
}, 'a=1&b=2&c=3', {'host': '127.0.0.1', 'port': 8888}, 1000);
httpClient.request(httpcontext.request.options, function (err, body, res, httpContext) {
console.log(res.statusCode);
console.log(httpContext.data.key);
console.log(httpContext.data.url);
}, httpcontext);
``
* get请求
``
httpClient.get('https://www.baidu.com/', function (err, body, res, httpContext) {
console.log(res.statusCode)
});
``
* 超时请求
``
var httpcontext = {'request': {'timeout': 1000}};
httpClient.get(test_url, function (err, body, res, httpContext) {
console.log(res.statusCode)
}, httpcontext);
``
* 代理请求
``
var httpcontext = {'request': {'proxy': {'host': '127.0.0.1', 'port': 8888}}};
httpClient.get(test_url, function (err, body, res, httpContext) {
console.log(res.statusCode)
}, httpcontext);
``
* 代理请求，http_proxy方式
``
var httpcontext = {'request': {'http_proxy': 'http://127.0.0.1:8888'}};
httpClient.get(test_url, function (err, body, res, httpContext) {
console.log(res.statusCode)
}, httpcontext);
``
* 代理请求，http_proxy方式,支持proxy auth
``
var httpcontext = {'request': {'http_proxy': 'http://username:password@127.0.0.1:8888'}};
httpClient.get(test_url, function (err, body, res, httpContext) {
console.log(res.statusCode)
}, httpcontext);
``
* 将请求的数据附带到结果中
``
var httpcontext = httpClient.build_httpcontext('GET', {'key': 'value', 'city':'北京'});
httpClient.get(test_url, function (err, body, res, httpContext) {
console.log(res.statusCode)
console.log(httpContext.data.key)
console.log(httpContext.data.city)
}, httpcontext);
``
* 根据同步函数设置代理
``
var httpcontext = httpClient.build_httpcontext('GET', {'key': 'value', 'url': test_url});
httpcontext.proxymodel = 'dynamic';
httpcontext.callback = function (httpcontext) {
console.log(httpcontext.res.statusCode)
};
httpClient.request_select_proxy(httpcontext, function (callback) {
var http_proxy = syncProxy();//根据函数获取代理,代理是动态获取的时候可以用此种方法
httpcontext.request.http_proxy = http_proxy;
callback(httpcontext);
});
function syncProxy() {
return '127.0.0.1:8888';
}
``
* 根据异步函数设置代理
``
var httpcontext = httpClient.build_httpcontext('GET', {'key': 'value', 'url': test_url});
httpcontext.proxymodel = 'dynamic';
httpcontext.callback = function (httpcontext) {
console.log(httpcontext.res.statusCode)
};
httpClient.request_select_proxy(httpcontext, function (callback) {
asyncProxy(function (http_proxy) {
httpcontext.request.http_proxy = http_proxy;
callback(httpcontext);
})
});
function asyncProxy(calback) {
calback(proxy_url);
}
``
* 设置头
``
var httpContext = {'request': {'headers': {"Cookie": "a=a"}}};
httpClient.get({'path': test_url, 'headers': {"Cookie": "b=b"}}, function (err, body, res, httpContext) {
console.log(httpContext.request.headers.Cookie)
console.log(res.statusCode)
}, httpContext);
``
``
var httpClient = require('../lib/http-clientp');
var fs = require('fs');
var httpcontext = {
'request': {
'http_proxy': 'http://127.0.0.1:8888',
'headers': {'Content-Type': 'image/jpeg;charset=UTF-8', 'Accept': 'image/webp,image/apng,image/,/*;q=0.8'}
}, 'response': {'charset': 'buffer'}
};
httpClient.get('http://202.109.191.178:8081/wt-web/captcha?0.4344325280246917', function (err, body, res, httpContext) {
fs.writeFileSync("/Users/jgm/Downloads/chrome/captcha.png", body);
}, httpcontext);
```