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tcp_server.go
37 lines (31 loc) · 870 Bytes
/
tcp_server.go
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package protocol
import (
"fmt"
"net"
"runtime"
"strings"
"github.com/nsqio/nsq/internal/app"
)
type TCPHandler interface {
Handle(net.Conn)
}
func TCPServer(listener net.Listener, handler TCPHandler, l app.Logger) {
l.Output(2, fmt.Sprintf("TCP: listening on %s", listener.Addr()))
for {
clientConn, err := listener.Accept()
if err != nil {
if nerr, ok := err.(net.Error); ok && nerr.Temporary() {
l.Output(2, fmt.Sprintf("NOTICE: temporary Accept() failure - %s", err))
runtime.Gosched()
continue
}
// theres no direct way to detect this error because it is not exposed
if !strings.Contains(err.Error(), "use of closed network connection") {
l.Output(2, fmt.Sprintf("ERROR: listener.Accept() - %s", err))
}
break
}
go handler.Handle(clientConn)
}
l.Output(2, fmt.Sprintf("TCP: closing %s", listener.Addr()))
}