我正在從 CLI 應用程序設置 OAuth2 流，我正在處理。我需要為提供商創建一個臨時HTTP服務器以發送回調，例如localhost:8080/callback一旦提供商發送了我需要的詳細信息，我希望能夠關閉HTTP服務器，只是為了保持一切干凈。我想我正在尋找的是例程和等待組，但我對這個領域仍然很陌生。這就是我到目前為止所擁有的。我已經編輯了將用戶發送到提供程序的部分，因為我的主要問題只是如何在捕獲變量后關閉HTTP服務器。token服務器啟動將用戶定向到提供程序站點上的授權 URL用戶批準請求提供程序將用戶定向回localhost:8080/callbackURL僅包含客戶端參數，因此我必須使用服務器HTML來捕獲值并將其發送回服務器服務器接收令牌，然后可以關閉package mainimport ( "fmt" "log" "net/http" "sync")func main() { // Start local HTTP serevr to listen for response serverDone := &sync.WaitGroup{} serverDone.Add(1) Start(serverDone) // ... Process to start OAuth2 flow // User is directed to provider website // User approves // Provider direct user back to localhost/callback serverDone.Wait()}func Start(wg *sync.WaitGroup) { srv := &http.Server{Addr: ":8080"} http.HandleFunc("/callback", func(w http.ResponseWriter, r *http.Request) { token := r.URL.Query().Get("token") if token != "" { fmt.Println("Found Token:", token) // Shut down server here } else { // Server HTML page to fetch token and return to server at /callback } }) go func() { // let main know we are done cleaning up defer wg.Done() // ErrServerClosed on graceful close if err := srv.ListenAndServe(); err != http.ErrServerClosed { log.Fatalf("ListenAndServe(): %v", err) } }()}
1 回答
慕妹3242003
TA貢獻1824條經驗 獲得超6個贊
用：
var ctxShutdown, cancel = context.WithCancel(context.Background())
然后：
cancel() // to say sorry, above.
// graceful-shutdown
err := srv.Shutdown(context.Background())
試試這個：
package main
import (
"context"
"fmt"
"log"
"net/http"
"sync"
)
func main() {
serverDone := &sync.WaitGroup{}
serverDone.Add(1)
Start(serverDone)
serverDone.Wait()
fmt.Println("Done that.")
}
var ctxShutdown, cancel = context.WithCancel(context.Background())
func Start(wg *sync.WaitGroup) {
srv := &http.Server{Addr: ":8080"}
http.HandleFunc("/callback", func(w http.ResponseWriter, r *http.Request) {
select {
case <-ctxShutdown.Done():
fmt.Println("Sorry: Shuting down ...")
return
default:
}
token := r.URL.Query().Get("token")
if token != "" {
fmt.Println("Found Token:", token)
fmt.Println("Shuting down ...")
// Shut down server here
cancel() // to say sorry, above.
// graceful-shutdown
err := srv.Shutdown(context.Background())
if err != nil {
log.Println("server.Shutdown:", err)
}
} else {
fmt.Fprintln(w, "Hi") // Server HTML page to fetch token and return to server at /callback
}
})
go func() {
defer wg.Done()
if err := srv.ListenAndServe(); err != http.ErrServerClosed {
log.Fatalf("ListenAndServe(): %v", err)
}
fmt.Println("Bye.")
}()
}
運行并打開 http://127.0.0.1:8080/callback?token=2
輸出：
Found Token: 2
Shuting down ...
Bye.
Done that.
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