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|
package main
import (
"bytes"
"flag"
"fmt"
"io"
"log"
"net/http"
)
var (
url = flag.String("url", "http://localhost/blk-1m", "")
mode = flag.String("mode", "server", "")
)
func main() {
flag.Parse()
// disable connection pool
http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = -1
if *mode == "server" {
fmt.Println("starting server")
server()
} else if *mode == "client" {
err := client(*url)
if err != nil {
log.Fatal(err)
}
}
}
func server() {
http.HandleFunc("/ping", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "pong")
})
log.Fatal(http.ListenAndServe(":8080", nil))
}
func client(url string) error {
resp, err := http.Get(url)
if err != nil {
return fmt.Errorf("failed Do err=%q", err)
}
if resp.StatusCode != 200 {
return fmt.Errorf("unexpected status code %d", resp.StatusCode)
} else {
var buffer bytes.Buffer
_, err = io.Copy(&buffer, resp.Body)
if err != nil {
return fmt.Errorf("failed Copy() err=%q", err)
}
fmt.Printf("resp=%s\n", buffer.String())
}
err = resp.Body.Close()
if err != nil {
return fmt.Errorf("failed Close() err=%q", err)
}
return nil
}
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