英文:
How to wrap net.Conn.Read() in Golang
问题
我想封装Read函数net.Conn.Read()。目的是读取SSL握手消息。https://pkg.go.dev/net#TCPConn.Read
nc, err := net.Dial("tcp", "google.com:443")if err != nil {fmt.Println(err)}tls.Client(nc, &tls.Config{})
有什么方法可以实现吗？
提前感谢。
英文:
I want to wrap Read function net.Conn.Read(). The purpose of this to read the SSL handshake messages. https://pkg.go.dev/net#TCPConn.Read
nc, err := net.Dial("tcp", "google.com:443")if err != nil {fmt.Println(err)}tls.Client(nc, &tls.Config{})
Are there any ways to do?
Thanks in advance
答案1
得分: 1
使用以下代码拦截net.Conn上的Read操作：
type wrap struct {// Conn是被包装的net.Conn。// 因为它是一个嵌入字段，net.Conn的方法会自动提升到wrap。net.Conn}// Read调用被包装的Read方法，并打印通过的字节。// 将打印语句替换为适合你的应用程序的内容。func (w wrap) Read(p []byte) (int, error) {n, err := w.Conn.Read(p)fmt.Printf("%x\n", p[:n]) // 示例return n, err}像这样进行包装：tnc, err := tls.Client(wrap{nc}, &tls.Config{})
希望这能帮到你！
英文:
Use the following code to intercept Read on a net.Conn:
type wrap {// Conn is the wrapped net.Conn.// Because it's an embedded field, the// net.Conn methods are automatically promoted// to wrap.net.Conn}// Read calls through to the wrapped read and// prints the bytes that flow through. Replace// the print statement with whatever is appropriate// for your application.func (w wrap) Read(p []byte) (int, error) {n, err := w.Conn.Read()fmt.Printf("%x\n", p[:n]) // examplereturn n, err}
Wrap like this:
tnc, err :=tls.Client(wrap{nc}, &tls.Config{})
答案2
得分: -2
之前的回答确实完成了工作。
不过我建议你观看Liz Rice的演讲：GopherCon 2018: Liz Rice - Go程序员的安全连接指南
在她的Github上查看代码，你可能会找到更优雅的方法来实现你想要的功能。
从客户端代码的第26行开始。
英文:
The previous answer gets the job done indeed.
However I would recommend Liz Rice's talk: GopherCon 2018: Liz Rice - The Go Programmer's Guide to Secure Connections
Going through her code in Github, you might find a more elegant way to achieve what you want.
Start with the client code on line 26.
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