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88 lines
2.1 KiB
88 lines
2.1 KiB
// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"fmt"
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"os"
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"time"
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"github.com/bboozzoo/mconnect/discovery"
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"github.com/bboozzoo/mconnect/logger"
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"github.com/bboozzoo/mconnect/protocol/packet"
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)
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var (
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Stderr = os.Stderr
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Stdout = os.Stdout
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)
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func main() {
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ctx := context.Background()
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ctx = logger.WithContext(ctx, logger.New())
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log := logger.FromContext(ctx)
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log.SetLevel(logger.ErrorLevel)
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log.Infof("setting up listener")
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l, err := discovery.NewListener()
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if err != nil {
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fmt.Fprintf(Stderr, "error: failed to setup listener: %v\n",
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err)
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os.Exit(1)
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}
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hostname, err := os.Hostname()
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if err != nil {
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fmt.Fprintf(Stderr, "error: failed to obtain hostname: %v\n",
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err)
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os.Exit(1)
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}
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go func() {
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for {
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err := discovery.Announce(ctx, packet.Identity{
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DeviceId: "mconnect-" + hostname,
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DeviceName: hostname,
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DeviceType: "computer",
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ProtocolVersion: 7,
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TcpPort: 1716,
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})
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if err != nil {
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log.Errorf("failed to self announce: %v", err)
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}
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time.Sleep(5 * time.Second)
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}
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}()
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devices := map[string]*discovery.Discovery{}
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for {
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log.Info("receive wait")
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d, err := l.Receive(ctx)
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if err != nil {
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log.Warning("failed to receive identity packet: %v", err)
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continue
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}
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log.Infof("discovered a device at %s packet: %v",
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d.From, d.Identity)
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if _, ok := devices[d.Identity.DeviceId]; !ok {
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devices[d.Identity.DeviceId] = d
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fmt.Fprintf(Stdout, " * %q (ID: %v) %v\n",
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d.Identity.DeviceName,
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d.Identity.DeviceId,
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d.From.IP)
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}
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}
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}
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