无法弄清楚如何将缓冲区与二进制 Web 套接字一起使用
每个人！我正在尝试让我的 go 代码与 openstack 串行控制台一起工作。它通过网络套接字公开。我有问题。
我找到了 gorrilla websocket lib（很棒）并以此示例作为参考
通过一些调整，现在我有这样的代码：
package main
import (
"log"
"net/url"
"os"
"os/signal"
"time"
"net/http"
"github.com/gorilla/websocket"
)
func main() {
DialSettings := &websocket.Dialer {
Proxy: http.ProxyFromEnvironment,
HandshakeTimeout: 45 * time.Second,
Subprotocols: []string{"binary",},
ReadBufferSize: 4096,
WriteBufferSize: 4096,
}
log.SetFlags(0)
interrupt := make(chan os.Signal, 1)
signal.Notify(interrupt, os.Interrupt)
u, _ := url.Parse("ws://172.17.0.64:6083/?token=d1763f2b-3466-424c-aece-6aeea2a733d5") //websocket url as it outputs from 'nova get-serial-console test' cmd
log.Printf("connecting to %s", u.String())
c, _, err := DialSettings.Dial(u.String(), nil)
if err != nil {
log.Fatal("dial:", err)
}
defer c.Close()
done := make(chan struct{})
go func() {
defer close(done)
for {
_, message, err := c.ReadMessage()
if err != nil {
log.Println("read:", err)
return
}
log.Printf("%s", message)
}
}()
c.WriteMessage(websocket.TextMessage, []byte("\n")) //just to force output to console
for {
select {
case <-done:
return
case <-interrupt:
log.Println("interrupt")
// Cleanly close the connection by sending a close message and then
// waiting (with timeout) for the server to close the connection.
err := c.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
if err != nil {
log.Println("write close:", err)
return
}
select {
case <-done:
case <-time.After(time.Second):
}
return
}
}
}
长风秋雁1回答
-
倚天杖
日志包将每条日志消息写在单独的行中。如果日志消息不以换行符结尾，那么日志包将添加一个。这些额外的换行符会混淆输出。要修复输出，请将对的调用替换log.Printf("%s", message)为不向输出添加换行符的函数。以下是一些选项：将消息写入 stderr（与默认日志包配置相同的目的地）：os.Stderr.Write(message)将消息写入标准输出（写入程序输出的更常规位置）：os.Stdout.Write(message)
随时随地看视频慕课网APP
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