Unix Sockets in Go
- by marketer
I'm trying to make a simple echo client and server that uses Unix sockets. In this example, the server can receive data from the client, but it can't send the data back. If I use tcp connections instead, it works great:
Server
package main
import "net"
import "fmt"
func echoServer(c net.Conn) {
for {
buf := make([]byte, 512)
nr, err := c.Read(buf)
if err != nil {
return
}
data := buf[0:nr]
fmt.Printf("Received: %v", string(data))
_, err = c.Write(data)
if err != nil {
panic("Write: " + err.String())
}
}
}
func main() {
l, err := net.Listen("unix", "/tmp/echo.sock")
if err != nil {
println("listen error", err.String())
return
}
for {
fd, err := l.Accept()
if err != nil {
println("accept error", err.String())
return
}
go echoServer(fd)
}
}
Client
package main
import "net"
import "time"
func main() {
c,err := net.Dial("unix","", "/tmp/echo.sock")
if err != nil {
panic(err.String())
}
for {
_,err := c.Write([]byte("hi\n"))
if err != nil {
println(err.String())
}
time.Sleep(1e9)
}
}
