72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
package main
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import "os"
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import "io"
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import "fmt"
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import "log"
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import "net"
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import "time"
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import "errors"
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// import "context"
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import "git.tebibyte.media/sashakoshka/hopp"
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import "git.tebibyte.media/sashakoshka/hopp/examples/ping"
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func main() {
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name := os.Args[0]
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if len(os.Args) != 2 {
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fmt.Fprintf(os.Stderr, "Usage: %s HOST:PORT\n", name)
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os.Exit(2)
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}
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address := os.Args[1]
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conn, err := dial(address)
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handleErr(1, err)
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trans, err := conn.OpenTrans()
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handleErr(1, err)
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go func() {
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defer fmt.Fprintf(os.Stdout, "(i) disconnected\n")
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for {
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message, _, err := ping.Receive(trans)
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if err != nil {
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if !errors.Is(err, io.EOF) {
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handleErr(1, err)
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}
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break
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}
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switch message := message.(type) {
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case *ping.MessagePong:
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log.Printf("--> pong (%d) from %v", message, address)
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}
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}
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}()
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message := ping.MessagePing(0)
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for {
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log.Printf("<-- ping (%d)", message)
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_, err := ping.Send(trans, &message)
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handleErr(1, err)
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message ++
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time.Sleep(time.Second)
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}
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}
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func dial(address string) (hopp.Conn, error) {
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// ctx, done := context.WithTimeout(context.Background(), 16 * time.Second)
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// defer done()
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// conn, err := hopp.Dial(ctx, "tcp", address, nil)
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// if err != nil { return nil, err }
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// return conn, nil
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underlying, err := net.Dial("tcp", address)
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if err != nil { return nil, err }
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conn := hopp.AdaptA(underlying, hopp.ServerSide)
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return conn, nil
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}
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func handleErr(code int, err error) {
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if err != nil {
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fmt.Fprintf(os.Stderr, "%s: %v\n", os.Args[0], err)
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os.Exit(code)
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}
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}
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