83 lines
1.5 KiB
Go
83 lines
1.5 KiB
Go
package ingress
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import (
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"log"
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"net"
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"relay/registry"
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"relay/util"
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tunnelpb "relay/proto/tunnel"
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)
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func handleClientTCP(conn net.Conn) {
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defer conn.Close()
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sni, hello, err := peekClientHello(conn)
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if err != nil {
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log.Println("peek failed:", err)
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return
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}
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log.Println("Client SNI:", sni)
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registry.Global.Mu.Lock()
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dev := registry.Global.Domains[sni]
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log.Println("Known domains:", util.Keys(registry.Global.Domains))
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registry.Global.Mu.Unlock()
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if dev == nil {
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log.Println("No device bound for domain:", sni)
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conn.Write([]byte("HTTP/1.1 503 No device\r\n\r\n"))
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return
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}
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streamID := dev.AllocateStreamID()
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done := dev.AddStream(streamID, conn)
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log.Printf("Client [%s] → device (stream %d)\n", sni, streamID)
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dev.SendFrame(&tunnelpb.Frame{
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Type: tunnelpb.FrameType_FRAME_OPEN,
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StreamId: streamID,
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Payload: []byte(sni),
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})
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dev.SendFrame(&tunnelpb.Frame{
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Type: tunnelpb.FrameType_FRAME_DATA,
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StreamId: streamID,
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Payload: hello,
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})
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go func() {
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buf := util.BufPool.Get().([]byte)
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defer util.BufPool.Put(buf)
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for {
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n, err := conn.Read(buf)
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if err != nil {
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dev.SendFrame(&tunnelpb.Frame{
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Type: tunnelpb.FrameType_FRAME_CLOSE,
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StreamId: streamID,
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})
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dev.RemoveStream(streamID)
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return
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}
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dev.SendFrame(&tunnelpb.Frame{
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Type: tunnelpb.FrameType_FRAME_DATA,
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StreamId: streamID,
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Payload: append([]byte(nil), buf[:n]...),
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})
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}
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}()
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select {
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case <-done:
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case <-dev.Done():
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}
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dev.RemoveStream(streamID)
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}
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