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main.go
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main.go
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// Copyright (c) 2019 Perlin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package main
import (
"fmt"
"github.com/clearmatics/noise"
"github.com/clearmatics/noise/cipher"
"github.com/clearmatics/noise/handshake"
"golang.org/x/net/context"
"google.golang.org/grpc"
"math/rand"
"net"
"strconv"
"sync"
"sync/atomic"
"time"
)
const payloadSize = 600
const concurrency = 4
var sendCount, recvCount uint64
type server struct{}
func (server) GetMessage(context.Context, *Message) (*Message, error) {
atomic.AddUint64(&recvCount, 1)
m := &Message{Contents: make([]byte, payloadSize)}
if _, err := rand.Read(m.Contents); err != nil {
return nil, err
}
return m, nil
}
func main() {
protocol := noise.NewCredentials("127.0.0.1", handshake.NewECDH(), cipher.NewAEAD())
go func() {
for range time.Tick(1 * time.Second) {
fmt.Printf("Sent %d messages, and received %d messages.\n", atomic.SwapUint64(&sendCount, 0), atomic.SwapUint64(&recvCount, 0))
}
}()
go func() {
l, err := net.Listen("tcp", ":3000")
if err != nil {
panic(err)
}
s := grpc.NewServer(grpc.Creds(protocol))
RegisterRouteMessageServer(s, &server{})
if err := s.Serve(l); err != nil {
panic(err)
}
}()
time.Sleep(100 * time.Millisecond)
conn, err := grpc.Dial(net.JoinHostPort("127.0.0.1", strconv.Itoa(3000)), grpc.WithTransportCredentials(protocol))
if err != nil {
panic(err)
}
defer conn.Close()
client := NewRouteMessageClient(conn)
for {
var wg sync.WaitGroup
wg.Add(concurrency)
for i := 0; i < concurrency; i++ {
go func() {
defer wg.Done()
msg := &Message{Contents: make([]byte, payloadSize)}
if _, err := rand.Read(msg.Contents); err != nil {
panic(err)
}
res, err := client.GetMessage(context.Background(), msg)
if err != nil {
panic(err)
}
if len(res.Contents) != payloadSize {
panic("something wrong happened")
}
atomic.AddUint64(&sendCount, 1)
}()
}
wg.Wait()
}
}