Display verbose listen address for HTTP server.

common.go

@@ -17,6 +17,7 @@ import (
 	"math"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 )
 
@@ -274,3 +275,16 @@ func EncodeURLValues(url string, values url.Values) string {
 	}
 	return path
 }
+
+func ExtractHost(address string) string {
+	host := SplitStrings(address, ":")[0]
+	if host == "" {
+		return "localhost"
+	}
+	return host
+}
+func ExtractPort(host string) int {
+	portStr := SplitStrings(host, ":")[1]
+	port, _ := strconv.Atoi(portStr)
+	return port
+}

common_test.go

@@ -206,3 +206,30 @@ func TestCalculateNetProfit(t *testing.T) {
 		t.Error(fmt.Sprintf("Test failed. Expected '%f'. Actual '%f'.", expectedOutput, actualResult))
 	}
 }
+
+func TestExtractHost(t *testing.T) {
+	t.Parallel()
+	address := "localhost:1337"
+	expectedOutput := "localhost"
+	actualResult := ExtractHost(address)
+	if expectedOutput != actualResult {
+		t.Error(fmt.Sprintf("Test failed. Expected '%f'. Actual '%f'.", expectedOutput, actualResult))
+	}
+
+	address = "192.168.1.100:1337"
+	expectedOutput = "192.168.1.100"
+	actualResult = ExtractHost(address)
+	if expectedOutput != actualResult {
+		t.Error(fmt.Sprintf("Test failed. Expected '%f'. Actual '%f'.", expectedOutput, actualResult))
+	}
+}
+
+func TestExtractPort(t *testing.T) {
+	t.Parallel()
+	address := "localhost:1337"
+	expectedOutput := 1337
+	actualResult := ExtractPort(address)
+	if expectedOutput != actualResult {
+		t.Error(fmt.Sprintf("Test failed. Expected '%f'. Actual '%f'.", expectedOutput, actualResult))
+	}
+}

main.go

@@ -138,9 +138,10 @@ func main() {
 			log.Println(err) // non fatal event
 			//bot.config.Webserver.Enabled = false
 		} else {
-			log.Println("HTTP Webserver support enabled.")
+			listenAddr := bot.config.Webserver.ListenAddress
+			log.Printf("HTTP Webserver support enabled. Listen URL: http://%s:%d/\n", ExtractHost(listenAddr), ExtractPort(listenAddr))
 			router := NewRouter(bot.exchanges)
-			log.Fatal(http.ListenAndServe(bot.config.Webserver.ListenAddress, router))
+			log.Fatal(http.ListenAndServe(listenAddr, router))
 		}
 	}
 	if !bot.config.Webserver.Enabled {