dtr87341 2017-04-30 19:23
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golang发送和接收对象

I am able to send and receive strings in golang using the following code:

//send side
message.Buf.WriteTo(conn)

//receive side
message, err := bufio.NewReader(conn).ReadString('
')
    if err != nil {
        panic(err)
    }
fmt.Print("Message from client: ", string(message))

However, I would like to send the entire message object and receive it at the receive side

Something like:

//send side
message.WriteTo(conn)

//receive side
message,err :=bufio.NewReader(conn).ReadMessageObject()

I am new to Golang and any pointers are extremely helpful.

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1条回答 默认 最新

  • dongpo1203 2017-04-30 19:45
    关注

    You'll first want to declare a type for your messages. Something like:

    type Message struct {
        From      string
        To        string
        Text      string
        CreatedAt time.Time
    }
    

    Then you'll need to decide how you want your new types to be encoded to/decoded from bytes, since all you can send through the wire are bytes. You can for example send your messages as json, as xml, or as gob, etc. Which one you choose depends on what your requirements are, json is ubiquitous and readable but gob on the other hand is much faster, at least that's what I heard, haven't really used gob myself yet.

    For example if you go with json.

    // receive
    var m Message
    if _, err := json.NewDecoder(conn).Decode(&m); err != nil {
        panic(err)
    }
    
    // send
    if err := json.NewEncoder(conn).Encode(m); err != nil {
        panic(err)
    }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

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