du7999
2017-01-21 16:55 阅读 87
已采纳

使用Golang将JSON发送到Unix套接字

I'm trying to write a golang program to control mpv via issuing commands to a unix socket running at /tmp/mpvsocket.

This is what I've tried so far:

func main() {                                     
  c, err := net.Dial("unix", "/tmp/mpvsocket")    
  if err != nil {                                 
    panic(err)                                    
  }                                               
  defer c.Close()                                 

  _, err = c.Write([]byte(`{"command":["quit"]}`))
  if err != nil {                                 
    log.Fatal("write error:", err)                
  }                                               
}                                                 

This should cause mpv to quit but nothing happens.

This command can be issued via the command line to get the expected results:

echo '{ "command": ["quit"] }' | socat - /tmp/mpvsocket

It uses socat to send the JSON to the socket. How can I send this to the socket using Golang?

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1条回答 默认 最新

  • 已采纳
    duancan65665 duancan65665 2017-01-21 20:23

    Thanks to @AndySchweig in the comments above, I needed a new line after my JSON.

    The fixed line:

      _, err = c.Write([]byte(`{"command":["quit"]}` + "
    "))
    

    The full block of fixed code:

    func main() {                                     
      c, err := net.Dial("unix", "/tmp/mpvsocket")    
      if err != nil {                                 
        panic(err)                                    
      }                                               
      defer c.Close()                                 
    
      _, err = c.Write([]byte(`{"command":["quit"]}` + "
    "))
      if err != nil {                                 
        log.Fatal("write error:", err)                
      }                                               
    }                                     
    
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