remove go1.7 support

.travis.yml

@@ -1,7 +1,6 @@
 language: go
 sudo: false
 go:
-  - 1.7.x
   - 1.8.x
   - 1.9.x
   - 1.10.x

README.md

@@ -120,7 +120,7 @@ $ go run main.go
 
 ## Prerequisite
 
-Now Gin requires Go 1.7 or later and Go 1.8 will be required soon.
+Now Gin requires Go 1.8 or later and Go 1.9 will be required soon.
 
 ## Quick start
  

debug.go

@@ -14,7 +14,7 @@ import (
 	"strings"
 )
 
-const ginSupportMinGoVer = 7
+const ginSupportMinGoVer = 8
 
 // IsDebugging returns true if the framework is running in debug mode.
 // Use SetMode(gin.ReleaseMode) to disable debug mode.
@@ -66,7 +66,7 @@ func getMinVer(v string) (uint64, error) {
 
 func debugPrintWARNINGDefault() {
 	if v, e := getMinVer(runtime.Version()); e == nil && v <= ginSupportMinGoVer {
-		debugPrint(`[WARNING] Now Gin requires Go 1.7 or later and Go 1.8 will be required soon.
+		debugPrint(`[WARNING] Now Gin requires Go 1.8 or later and Go 1.9 will be required soon.
 
 `)
 	}

examples/graceful-shutdown/close/server.go

@@ -1,5 +1,3 @@
-// +build go1.8
-
 package main
 
 import (

examples/graceful-shutdown/graceful-shutdown/server.go

@@ -1,5 +1,3 @@
-// +build go1.8
-
 package main
 
 import (

response_writer.go

@@ -16,7 +16,8 @@ const (
 	defaultStatus = http.StatusOK
 )
 
-type responseWriterBase interface {
+// ResponseWriter ...
+type ResponseWriter interface {
 	http.ResponseWriter
 	http.Hijacker
 	http.Flusher
@@ -37,6 +38,9 @@ type responseWriterBase interface {
 
 	// Forces to write the http header (status code + headers).
 	WriteHeaderNow()
+
+	// get the http.Pusher for server push
+	Pusher() http.Pusher
 }
 
 type responseWriter struct {
@@ -113,3 +117,10 @@ func (w *responseWriter) Flush() {
 	w.WriteHeaderNow()
 	w.ResponseWriter.(http.Flusher).Flush()
 }
+
+func (w *responseWriter) Pusher() (pusher http.Pusher) {
+	if pusher, ok := w.ResponseWriter.(http.Pusher); ok {
+		return pusher
+	}
+	return nil
+}

response_writer_1.7.go

@@ -1,12 +0,0 @@
-// Copyright 2018 Gin Core Team.  All rights reserved.
-// Use of this source code is governed by a MIT style
-// license that can be found in the LICENSE file.
-
-// +build !go1.8
-
-package gin
-
-// ResponseWriter ...
-type ResponseWriter interface {
-	responseWriterBase
-}

response_writer_1.8.go

@@ -1,25 +0,0 @@
-// Copyright 2018 Gin Core Team.  All rights reserved.
-// Use of this source code is governed by a MIT style
-// license that can be found in the LICENSE file.
-
-// +build go1.8
-
-package gin
-
-import (
-	"net/http"
-)
-
-// ResponseWriter ...
-type ResponseWriter interface {
-	responseWriterBase
-	// get the http.Pusher for server push
-	Pusher() http.Pusher
-}
-
-func (w *responseWriter) Pusher() (pusher http.Pusher) {
-	if pusher, ok := w.ResponseWriter.(http.Pusher); ok {
-		return pusher
-	}
-	return nil
-}