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sir,do you have linux Edition?
sir,do you have linux Edition?
The plain HTTP request was sent to HTTPS port
测试代码
使用该代码探测443端口，没有进行tls的处理
func tlsTest() {
conn, err := net.Dial("tcp", "220.181.38.148:443")
msg := "GET / HTTP/1.1\r\n"
msg += "Host:" + "baidu.com" + "\r\n"
msg += "DNT: 1\r\n"
msg += "User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.87 Safari/537.36\r\n"
msg += "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3\r\n"
// msg += "Accept-Encoding: gzip, deflate\r\n"
msg += "Accept-Language: zh-CN,zh;q=0.9,en;q=0.8\r\n"
msg += "Connection: close\r\n"
msg += "\r\n\r\n"
defer conn.Close()
_, err = io.WriteString(conn, msg)
if err != nil {
fmt.Println(err.Error())
}
buf := make([]byte, 4096)
count, err := conn.Read(buf)
if err != nil {
fmt.Println(err.Error())
}
fmt.Println(string(buf[0:count]))
}
返回400错误
HTTP/1.1 400 Bad Request
Server: bfe/1.0.8.18
Date: Wed, 05 Aug 2020 11:58:13 GMT
Content-Type: text/html
Content-Length: 673
Connection: close
<html>
<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<center>The plain HTTP request was sent to HTTPS port</center>
<hr><center>bfe/1.0.8.18</center>
</body>
</html>
修复建议
可以查看 zgrab 的实现
https://github.com/zmap/zgrab2/blob/master/modules/http/scanner.go
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