New HTTP logging flag and related code

main.go

@@ -37,6 +37,8 @@ import (
 	ESIWallet "./client/wallet"
 
 	httptransport "github.com/go-openapi/runtime/client"
+
+	loghttp "github.com/motemen/go-loghttp"
 )
 
 // Character - Structure to save the verification data.
@@ -77,6 +79,7 @@ var (
 	cfgFilePath  = flag.String("config", "configuration.toml", "Path to the configuration file.")
 	cacheDBPath  = flag.String("cache", "cache.ldb", "Path to the cache leveldb database.")
 	insecureFlag = flag.Bool("insecure", false, "Do not check the HTTPS certificate")
+	logCalls     = flag.Bool("httplog", false, "Log HTTP calls")
 )
 
 var ctx = context.Background()
@@ -86,7 +89,7 @@ var cacheDB *leveldb.DB
 func main() {
 	flag.Parse()
 
-	logfilename := fmt.Sprintf("log-%s.log", time.Now().Format("2006-01-02_15_04_05"))
+	logfilename := fmt.Sprintf("log-%s.log", time.Now().Format("2006-01-02"))
 	f, err := os.OpenFile(logfilename, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
 	if err != nil {
 		log.Fatalf("error opening file: %v", err)
@@ -118,11 +121,29 @@ func main() {
 	cachingTransport := httpcache.NewTransport(ldb)
 
 	if *insecureFlag {
-		proxiedTransport := &http.Transport{
+		insecureTransport := &http.Transport{
 			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
 			Proxy:           http.ProxyFromEnvironment,
 		}
-		cachingTransport.Transport = proxiedTransport
+		cachingTransport.Transport = insecureTransport
+	}
+
+	if *logCalls {
+		var CustomLogResponse = func(resp *http.Response) {
+			log.Printf("<--- HTTP %d.%d %d %s (expires on %s) %s",
+				resp.ProtoMajor, resp.ProtoMinor,
+				resp.StatusCode,
+				resp.Request.URL,
+				resp.Header.Get("expires"),
+				resp.Header.Get("content-type"),
+			)
+		}
+
+		loggingTransport := &loghttp.Transport{
+			LogResponse: CustomLogResponse,
+		}
+		loggingTransport.Transport = cachingTransport.Transport
+		cachingTransport.Transport = loggingTransport
 	}
 
 	cachingClient := &http.Client{Transport: cachingTransport}