http.Handle("/",http.FileServer(http.Dir("/Users/administrator/Desktop/public")))
err := http.ListenAndServe("0.0.0.0:8080",nil)
if err!=nil{
  fmt.Print(err);
}

config.serverInitOnce.Do(config.serverInit) // 产生一个随机数作为通信凭证，下次通信时凭证校验通过后直接通信，校验不通过重新建立连接
msg, err := c.readHandshake() // 解析clientHello信息，此时获取到由客户端生成的第一个随机数
c.vers, ok = config.mutualVersion(hs.clientHello.vers) // 检查客户端与服务端tls版本是否一致
_, err = io.ReadFull(config.rand(), hs.hello.random) // 服务端产生第二个随机数
hs.setCipherSuite(id, supportedList, c.vers) // 确认加密算法

hs.cert, err = config.getCertificate(&ClientHelloInfo{
CipherSuites: hs.clientHello.cipherSuites,
ServerName: hs.clientHello.serverName,
SupportedCurves: hs.clientHello.supportedCurves,
SupportedPoints: hs.clientHello.supportedPoints,
});

skx, err := keyAgreement.generateServerKeyExchange(config, hs.cert, hs.clientHello, hs.hello) // 生成服务端摘要信息
c.writeRecord(recordTypeHandshake, helloDone.marshal()) //发送helloDone信息
preMasterSecret, err := keyAgreement.processClientKeyExchange(config, hs.cert, ckx, c.vers) // 处理获取由客户端生成的第三个随机数
hs.masterSecret = masterFromPreMasterSecret(c.vers, hs.suite, preMasterSecret, hs.clientHello.random, hs.hello.random) // 生成通信秘钥
hs.finishedHash.Write() // 服务端发送最后一次确认请求