Node.JS段点续传：Nginx配置文件分段下载功能的实现方法

range: bytes=3744-

accept-ranges': 'bytes'content-range': 'bytes */15522643'

server { listen 80; server_name adksdf.com; location ~ ^/(img/|js/|css/|upload/|font/|fonts/|res/|icon) {  add_header Access-Control-Allow-Origin *;  add_header Accept-Ranges bytes;  root /var/www/...;  access_log off;  expires max; } ...}

{ server: 'nginx', date: 'Wed, 24 Jan 2018 02:43:20 GMT', 'content-type': 'application/zip', 'content-length': '12420187', 'last-modified': 'Tue, 16 Jan 2018 12:09:47 GMT', connection: 'close', etag: '"5a5deb8b-ecdb53"', expires: 'Thu, 31 Dec 2037 23:55:55 GMT', 'cache-control': 'max-age=315360000', 'access-control-allow-origin': '*', 'accept-ranges': 'bytes', 'content-range': 'bytes 3102456-15522642/15522643' }

var reqOptions = { url: packageUrl, headers: {} }var filepath  = '/path/to/your/part/file'var fileOptions = {}fs.stat(filepath, function(err, states) { if (states) {  //Range: bytes=3744-  reqOptions.headers['range'] = 'bytes=' + states.size + '-'  fileOptions = { start: states.size, flags: 'r+' } } //创建 http 对象方法 var reqUrl = reqOptions.url var urlObj = url.parse(reqUrl) var options = {   hostname : urlObj.hostname  , port   : urlObj.port  , path   : urlObj.pathname  , headers  : reqOptions.headers || {} } var req = http.request(options, function(res) {  var receives  = []  var err     = null  var statusCode = res.statusCode  var headers   = res.headers  var ws = fs.createWriteStream(filepath, fileOptions)  ws.on('error', function(e) {   console.log('ws error', e)  })  res.on('data', function(chrunk) {   ws.write(chrunk)  })  res.on('error', function(err) {   ws.end()  })  res.on('end', function() {   ws.end()  }) }) req.on('error', function(e) {  cb && cb(e, null, {}) }) req.end() ...})