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Adds support for the https+tcp+sni listener. Any routes that are marked with proto=tcp or have a scheme tcp:// will be matched for TCP steering. Failing any matches there, fallthrough will be to https matching. This resolves: fabiolb#783. clean up error handling on 'use of closed network connection' case fix makefile tag finding stuff fix logic for https+tcp+sni matching so that only explicit proto=tcp matches
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package proxy | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "log" | ||
| "net" | ||
| "net/http" | ||
|
|
||
| "github.com/inetaf/tcpproxy" | ||
| ) | ||
|
|
||
| type childProxy struct { | ||
| l net.Listener | ||
| s Server | ||
| } | ||
|
|
||
| type InetAfTCPProxyServer struct { | ||
| Proxy *tcpproxy.Proxy | ||
| children []*childProxy | ||
| } | ||
|
|
||
| // Close - implements Server - is this even called? | ||
| func (tps *InetAfTCPProxyServer) Close() error { | ||
| _ = tps.Proxy.Close() | ||
| firstErr := tps.Proxy.Wait() | ||
| errChan := make(chan error) | ||
| for _, sl := range tps.children { | ||
| go func(sl *childProxy) { | ||
| errChan <- sl.s.Close() | ||
| }(sl) | ||
| } | ||
| for range tps.children { | ||
| err := <-errChan | ||
| if errors.Is(err, http.ErrServerClosed) { | ||
| err = nil | ||
| } | ||
| if firstErr == nil { | ||
| firstErr = err | ||
| } | ||
| if err != nil { | ||
| log.Printf("[ERROR] %s", err) | ||
| } | ||
| } | ||
| return firstErr | ||
|
|
||
| } | ||
|
|
||
| // Serve - implements server. The listener is ignored, but it | ||
| // calls serve on the children | ||
| func (tps *InetAfTCPProxyServer) Serve(_ net.Listener) error { | ||
| if len(tps.children) == 0 { | ||
| return fmt.Errorf("no children defined for listener") | ||
| } | ||
| errChan := make(chan error) | ||
| for _, sl := range tps.children { | ||
| go func(sl *childProxy) { | ||
| errChan <- sl.s.Serve(sl.l) | ||
| }(sl) | ||
| } | ||
| firstErr := tps.Proxy.Wait() | ||
| for range tps.children { | ||
| err := <-errChan | ||
| if errors.Is(err, http.ErrServerClosed) { | ||
| err = nil | ||
| } | ||
| if firstErr == nil { | ||
| firstErr = err | ||
| } | ||
| if err != nil { | ||
| log.Print("[FATAL] ", err) | ||
| } | ||
| } | ||
| return firstErr | ||
| } | ||
|
|
||
| // ServeLater - l is really only for listeners that are | ||
| // tcpproxy.TargetListener or a derivative. Don't call after | ||
| // Serve() is called. | ||
| func (tps *InetAfTCPProxyServer) ServeLater(l net.Listener, s Server) { | ||
| tps.children = append(tps.children, &childProxy{l, s}) | ||
| } | ||
|
|
||
| func (tps *InetAfTCPProxyServer) Shutdown(ctx context.Context) error { | ||
| _ = tps.Proxy.Close() // always returns nil error anyway | ||
| firstErr := tps.Proxy.Wait() // wait for outer listener to close before telling the childProxy | ||
| errChan := make(chan error) | ||
| for _, sl := range tps.children { | ||
| go func(sl *childProxy) { | ||
| errChan <- sl.s.Shutdown(ctx) | ||
| }(sl) | ||
| } | ||
| for range tps.children { | ||
| err := <-errChan | ||
| if firstErr == nil { | ||
| firstErr = err | ||
| } | ||
| if err != nil { | ||
| log.Print("[ERROR] ", err) | ||
| } | ||
| } | ||
| return firstErr | ||
| } |
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