don't fire ErrServerClosed on manually interrupt signals (CTRL/CMD+C)

Former-commit-id: 673c84dd13bb99c0926aa1b4a6b4eff9745403d8

_examples/http_request/extract-referer/main.go

@@ -24,5 +24,5 @@ func main() {
 
 	// http://localhost:8080?referer=https://twitter.com/Xinterio/status/1023566830974251008
 	// http://localhost:8080?referer=https://www.google.com/search?q=Top+6+golang+web+frameworks&oq=Top+6+golang+web+frameworks
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed))
+	app.Listen(":8080")
 }

_examples/http_request/read-custom-per-type/main.go

@@ -19,7 +19,7 @@ func main() {
 	//
 	// The response should be:
 	// Received: main.config{Addr:"localhost:8080", ServerName:"Iris"}
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed), iris.WithOptimizations)
+	app.Listen(":8080", iris.WithOptimizations)
 }
 
 func newApp() *iris.Application {

_examples/http_request/read-custom-via-unmarshaler/main.go

@@ -19,7 +19,7 @@ func main() {
 	//
 	// The response should be:
 	// Received: main.config{Addr:"localhost:8080", ServerName:"Iris"}
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed), iris.WithOptimizations)
+	app.Listen(":8080", iris.WithOptimizations)
 }
 
 func newApp() *iris.Application {

_examples/http_request/read-json/main.go

@@ -60,5 +60,5 @@ func main() {
 	//
 	// The response should be:
 	// Received: main.Company{Name:"iris-Go", City:"New York", Other:"Something here"}
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed), iris.WithOptimizations)
+	app.Listen(":8080", iris.WithOptimizations)
 }

_examples/http_request/read-xml/main.go

@@ -20,7 +20,7 @@ func main() {
 	//
 	// The response should be:
 	// Received: main.person{XMLName:xml.Name{Space:"", Local:"person"}, Name:"Winston Churchill", Age:90, Description:"Description of this person, the body of this inner element."}
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed), iris.WithOptimizations)
+	app.Listen(":8080", iris.WithOptimizations)
 }
 
 func newApp() *iris.Application {

_examples/http_request/request-logger/main.go

@@ -61,5 +61,5 @@ func main() {
 	// http://localhost:8080/2
 	// http://lcoalhost:8080/notfoundhere
 	// see the output on the console.
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed))
+	app.Listen(":8080")
 }

_examples/http_request/request-logger/request-logger-file-json/main.go

@@ -82,7 +82,7 @@ func main() {
 	// http://localhost:8080/1
 	// http://localhost:8080/2
 	// http://lcoalhost:8080/notfoundhere
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed))
+	app.Listen(":8080")
 }
 
 var excludeExtensions = [...]string{

_examples/http_request/request-logger/request-logger-file/main.go

@@ -35,7 +35,7 @@ func main() {
 	// http://localhost:8080/1
 	// http://localhost:8080/2
 	// http://lcoalhost:8080/notfoundhere
-	app.Listen(":8080", iris.WithoutServerError(iris.ErrServerClosed))
+	app.Listen(":8080")
 }
 
 // get a filename based on the date, file logs works that way the most times