معالجات HTTP والعملاء

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/http/httptest"
)

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("GET /health", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
		_, _ = io.WriteString(w, "ready\n")
	})
	recorder := httptest.NewRecorder()
	mux.ServeHTTP(recorder, httptest.NewRequest(http.MethodGet, "/health", nil))
	fmt.Printf("%d %q\n", recorder.Code, recorder.Body.String())
}

200 "ready\n"

ينتج المسار الواعي بالطريقة الحالة 200 وجسما من ready ونهاية سطر.

package main

import (
	"context"
	"fmt"
	"io"
	"net/http"
	"net/http/httptest"
	"time"
)

func main() {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = io.WriteString(w, "hello\n")
	}))
	defer server.Close()
	client := server.Client()
	client.Timeout = 2 * time.Second
	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
	defer cancel()
	request, err := http.NewRequestWithContext(ctx, http.MethodGet, server.URL, nil)
	if err != nil {
		panic(err)
	}
	response, err := client.Do(request)
	if err != nil {
		panic(err)
	}
	defer response.Body.Close()
	body, err := io.ReadAll(io.LimitReader(response.Body, 33))
	if err != nil || len(body) > 32 || response.StatusCode != http.StatusOK {
		panic("invalid lab response")
	}
	fmt.Printf("%d %q\n", response.StatusCode, string(body))
}

200 "hello\n"

يعيد خادم المختبر ستة بايتات؛ ويتحقق العميل المحدود من الحالة ويغلق الموارد.