Added graceful shutdown

Configuration.go

@@ -0,0 +1,30 @@
+package server
+
+import "time"
+
+// Configuration represents the server configuration.
+type Configuration struct {
+	Timeout TimeoutConfiguration `json:"timeouts"`
+}
+
+// TimeoutConfiguration lets you configure the different timeout durations.
+type TimeoutConfiguration struct {
+	Idle       time.Duration `json:"idle"`
+	Read       time.Duration `json:"read"`
+	ReadHeader time.Duration `json:"readHeader"`
+	Write      time.Duration `json:"write"`
+	Shutdown   time.Duration `json:"shutdown"`
+}
+
+// Reset resets all fields to the default configuration.
+func defaultConfig() Configuration {
+	return Configuration{
+		Timeout: TimeoutConfiguration{
+			Idle:       3 * time.Minute,
+			Write:      2 * time.Minute,
+			Read:       5 * time.Second,
+			ReadHeader: 5 * time.Second,
+			Shutdown:   250 * time.Millisecond,
+		},
+	}
+}