update. It is now possible to specify the logger for Dynamic Forward, and the default is /dev/null.

Author: blacknon

common.go

@@ -12,7 +12,7 @@ import (
 	"path/filepath"
 	"strings"
 
-	"golang.org/x/crypto/ssh/terminal"
+	terminal "golang.org/x/term"
 )
 
 // getAbsPath return absolute path convert.

connect.go

@@ -6,6 +6,7 @@ package sshlib
 
 import (
 	"io"
+	"log"
 	"net"
 	"os"
 	"os/signal"
@@ -49,6 +50,7 @@ type Connect struct {
 	ForwardAgent bool
 
 	// CheckKnownHosts if true, check knownhosts.
+	// Ignored if HostKeyCallback is set.
 	// Set it before CraeteClient.
 	CheckKnownHosts bool
 
@@ -93,6 +95,9 @@ type Connect struct {
 	// Set it before CraeteClient.
 	ForwardX11Trusted bool
 
+	//
+	DynamicForwardLogger *log.Logger
+
 	// shell terminal log flag
 	logging bool
 

forward.go

@@ -9,6 +9,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"log"
 	"net"
 	"net/http"
 	"os"
@@ -242,10 +243,18 @@ func (c *Connect) forwarder(local net.Conn, remote net.Conn) {
 // socks5Resolver prevents DNS from resolving on the local machine, rather than over the SSH connection.
 type socks5Resolver struct{}
 
+// Resolve
 func (socks5Resolver) Resolve(ctx context.Context, name string) (context.Context, net.IP, error) {
 	return ctx, nil, nil
 }
 
+func (c *Connect) getDynamicForwardLogger() *log.Logger {
+	if c.DynamicForwardLogger == nil {
+		return log.New(io.Discard, "", log.LstdFlags)
+	}
+	return c.DynamicForwardLogger
+}
+
 // TCPDynamicForward forwarding tcp data. Like Dynamic forward (`ssh -D <port>`).
 // listen port Socks5 proxy server.
 func (c *Connect) TCPDynamicForward(address, port string) (err error) {
@@ -255,6 +264,7 @@ func (c *Connect) TCPDynamicForward(address, port string) (err error) {
 			return c.Client.Dial(n, addr)
 		},
 		Resolver: socks5Resolver{},
+		Logger:   c.getDynamicForwardLogger(),
 	}
 
 	// Create Socks5 server
@@ -278,6 +288,7 @@ func (c *Connect) TCPReverseDynamicForward(address, port string) (err error) {
 			return net.Dial(n, addr)
 		},
 		Resolver: socks5Resolver{},
+		Logger:   c.getDynamicForwardLogger(),
 	}
 
 	// create listner
@@ -308,6 +319,9 @@ func (c *Connect) HTTPDynamicForward(address, port string) (err error) {
 		return c.Client.Dial(n, addr)
 	}
 
+	// set logger
+	httpProxy.Logger = c.getDynamicForwardLogger()
+
 	// listen
 	err = http.ListenAndServe(net.JoinHostPort(address, port), httpProxy)
 	return

shell.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/lunixbochs/vtclean"
 	"golang.org/x/crypto/ssh"
-	"golang.org/x/crypto/ssh/terminal"
+	terminal "golang.org/x/term"
 )
 
 // Shell connect login shell over ssh.