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dial_test.go
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dial_test.go
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package main
import (
"net"
"testing"
"time"
)
type addr struct {
hp string
raddr *net.TCPAddr
}
func BenchmarkDial(b *testing.B) {
tests := []struct {
name string
dialFn func(a addr) (net.Conn, error)
}{
{
name: "net.Dial",
dialFn: func(a addr) (net.Conn, error) {
return net.Dial("tcp", a.hp)
},
},
{
name: "net.DialTCP",
dialFn: func(a addr) (net.Conn, error) {
return net.DialTCP("tcp", nil, a.raddr)
},
},
{
name: "net.DialTimeout",
dialFn: func(a addr) (net.Conn, error) {
return net.DialTimeout("tcp", a.hp, time.Second)
},
},
}
for _, tt := range tests {
b.Run(tt.name, func(b *testing.B) {
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
panic(err)
}
go func() {
for {
c, err := ln.Accept()
if err != nil {
return
}
c.Close()
}
}()
hp := ln.Addr().String()
raddr, err := net.ResolveTCPAddr("tcp", hp)
if err != nil {
panic(err)
}
a := addr{hp, raddr}
for i := 0; i < b.N; i++ {
c, err := tt.dialFn(a)
if err != nil {
b.Errorf("Dial failed: %v", err)
} else {
c.Close()
}
}
})
}
}