SpoofDPI/proxy/https.go

package proxy

import (
	"fmt"
	"net"

	"github.com/xvzc/SpoofDPI/util"
)

func HandleHttps(clientConn net.Conn, ip string) {
    // Create a connection to the requested server
    remoteConn, err := net.Dial("tcp", ip+":443")
    if err != nil {
        util.Debug(err)
        return
    }
    defer remoteConn.Close()

    util.Debug("[HTTPS] Connected to the server.")

    // Send self generated response for connect request
    fmt.Fprintf(clientConn, "HTTP/1.1 200 Connection Established\r\n\r\n")
    util.Debug("[HTTPS] Sent 200 Connection Estabalished")

    // Read client hello
    clientHello, err := ReadBytes(clientConn)
    if err != nil {
        util.Debug("[HTTPS] Error reading client hello: ", err)
        util.Debug("Closing connection ", clientConn.RemoteAddr())
    }

    util.Debug(clientConn.RemoteAddr(), "[HTTPS] Client sent hello", len(clientHello))

    // Generate a go routine that reads from the server
    go Serve(remoteConn, clientConn, "HTTPS")

    // Send chunked request
    chunks := util.BytesToChunks(clientHello)
    for i := 0; i < len(chunks); i++ {
        _, write_err := remoteConn.Write(chunks[i])
        if write_err != nil {
            util.Debug("[HTTPS] Error writing to the client:", write_err)
            break
        }
    }

    // Read from the client
    Serve(clientConn, remoteConn, "HTTPS")
}