Skip to content

HandleConn: propagate src IP via context #48

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
AkihiroSuda wants to merge 1 commit into
base: master
Choose a base branch
from
Open

HandleConn: propagate src IP via context #48

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 7 additions & 1 deletion tcpproxy.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,12 @@ type Target interface {
HandleConn(net.Conn)
}

type srcAddrContextKey struct{}

// SourceAddrContextKey is the context key used by DialProxy.HandleConn to
// pass the incoming connection's remote address (net.Addr) to DialContext.
var SourceAddrContextKey srcAddrContextKey

// To is shorthand way of writing &tcpproxy.DialProxy{Addr: addr}.
func To(addr string) *DialProxy {
return &DialProxy{Addr: addr}
Expand Down Expand Up @@ -374,7 +380,7 @@ func closeWrite(c net.Conn) {

// HandleConn implements the Target interface.
func (dp *DialProxy) HandleConn(src net.Conn) {
ctx := context.Background()
ctx := context.WithValue(context.Background(), SourceAddrContextKey, src.RemoteAddr())
var cancel context.CancelFunc
if dp.DialTimeout >= 0 {
ctx, cancel = context.WithTimeout(ctx, dp.dialTimeout())
Expand Down