主要用于 zlib包

zlib.gzipSync(dataStr)
zlib.gunzip（option，cb）

request 传输 gizp 数据 需要设置headers

var headers = {'Accept-Encoding': 'gzip'};

response 获取 data 不能设置字符集

//res.setEncoding('utf8');绝壁不能加

不要用字符串拼接 用 数组arraylist.push
chunkStr
        var req = http.request(options, function (res) {
            res.setEncoding('utf8');
            var dataBuf = '';
            res.on('data', function (chunk) {
                dataBuf += chunk;
            });
            res.on('end', function () {
                callback(null, res.statusCode, dataBuf);
            });
        });

chunkArray
        var req = http.request(options, function (res) {
            // res.setEncoding('utf8');绝壁不能加这行
            var dataList = [];
            res.on('data', function (chunk) {
                dataList.push(chunk);
            });
            res.on('end', function () {
                var buffer = Buffer.concat(dataList);
                zlib.gunzip(buffer, function (err, decoded) {
                    data = decoded.toString();
                    callback(null, res.statusCode, data);
                });
            });
        });

Demo

var zlib = require('zlib');
var fs = require('fs');
var path = require('path');
var http = require('http');
var https = require('https');
var url = require('url');
var querystring = require('querystring');
var zlib = require('zlib');
var os = require('os');
var nodemailer = require('nodemailer');
// var tss = require("../../tss_sdk/tss");
var dnscache = require('dnscache')({
      "enable" : true,
      "ttl" : 300,
      "cachesize" : 100
      });

var MF = require('./core');
function HttpRequestGzip(hostname, port, path, headers, postData, callback) {
    if (hostname.indexOf('http://') === 0) {
        var urlObj = url.parse(hostname);
        hostname = urlObj.hostname;
        port = urlObj.port;
        path = urlObj.path;
    }
    dnscache.lookup(hostname, function(err, result) {
        if(err) {
            MF.Log.formatError("Parse dns of %s failed.", hostname);
            callback(new Error("Parse dns failed"));
            return;
        }
        hostname = result;
        onGetIp();
    });

    function onGetIp() {
        var options = {};
        options.hostname = hostname;
        options.path = '/';
        if (port)
            options.port = port;
        if (path)
            options.path += path;
        if (options.path)
            options.path = options.path.replace('//', '/');
        var postDataBuffer = null;
        if (postData !== undefined && postData !== null) {
                        //gzip 压缩
            postDataBuffer = MF.Zlib.Gzip(postData);
            options.method = 'POST';
            if (headers)
                options.headers = headers;
            else
                options.headers = {};
            if (!options.headers['Content-Type'])
                options.headers['Content-Type'] = 'application/x-www-form-urlencoded; charset=utf-8';
            options.headers['Content-Length'] = postDataBuffer.length;
        } else {
            options.method = 'GET';
            if (headers)
                options.headers = headers;
        }

        // MF.Log.logDebug('HttpRequest: ');
        // MF.Log.logDebug(options);
        var req = http.request(options, function (res) {
            // res.setEncoding('utf8');绝壁不能加这行
            var dataList = [];
            res.on('data', function (chunk) {
                dataList.push(chunk);
            });
            res.on('end', function () {
                var buffer = Buffer.concat(dataList);
                zlib.gunzip(buffer, function (err, decoded) {
                    data = decoded.toString();
                    callback(null, res.statusCode, data);
                });
            });
        });
        req.on('error', function (e) {
            callback(e);
        });

        if (postDataBuffer !== undefined && postDataBuffer !== null) {
            req.write(postDataBuffer );
        }
        req.end();
    }
}

MF.Zlib

var MF = require('./core');
var zlib = require('zlib');

function Gzip(data) {
    return zlib.gzipSync(JSON.stringify(data));
}

function Gunzip(data) {
    zlib.gunzip(data,function (error,res) {
    });
    return 0;
}
MF.Zlib = {};
MF.Zlib.Gzip = Gzip;
MF.Zlib.Gunzip = Gunzip;