From 87d536c00120e6631cd7e6ff100739858e07e002 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Thu, 21 Jun 2018 09:31:43 +0800
Subject: [PATCH 01/16] utils:  use strings.Split instead of strings.IndexByte
 (#1400)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

And I test them benchmark:

code:

```go
# stringsbench.go
package stringsbench

import "strings"

func index(part string) string {
	if index := strings.IndexByte(part, ';'); index >= 0 {
		if part := strings.TrimSpace(strings.Split(part, ";")[0]); part != "" {
			return part[0:index]
		}
	}
	return ""
}

func split(part string) string {
	return strings.Split(part, ";")[0]
}
```

```go
# stringsbench_test.go
package stringsbench

import (
	"testing"
)

func BenchmarkIndex(b *testing.B) {
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			index("text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8")
		}
	})
}

func BenchmarkSplit(b *testing.B) {
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			split("text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8")
		}
	})
}
```

And the result:

```shell
➜  strings go test --bench=.
goos: darwin
goarch: amd64
BenchmarkIndex-8   	30000000	        46.1 ns/op
BenchmarkSplit-8   	50000000	        35.9 ns/op
PASS
ok  	_/Users/tianou/strings	3.271s
➜  strings go test --bench=.
goos: darwin
goarch: amd64
BenchmarkIndex-8   	30000000	        44.2 ns/op
BenchmarkSplit-8   	50000000	        34.7 ns/op
PASS
ok  	_/Users/tianou/strings	3.156s
➜  strings go test --bench=.
goos: darwin
goarch: amd64
BenchmarkIndex-8   	30000000	        45.6 ns/op
BenchmarkSplit-8   	50000000	        35.3 ns/op
PASS
ok  	_/Users/tianou/strings	3.230s
```
---
 utils.go | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/utils.go b/utils.go
index 278029d7..bf32c775 100644
--- a/utils.go
+++ b/utils.go
@@ -103,10 +103,7 @@ func parseAccept(acceptHeader string) []string {
 	parts := strings.Split(acceptHeader, ",")
 	out := make([]string, 0, len(parts))
 	for _, part := range parts {
-		if index := strings.IndexByte(part, ';'); index >= 0 {
-			part = part[0:index]
-		}
-		if part = strings.TrimSpace(part); part != "" {
+		if part = strings.TrimSpace(strings.Split(part, ";")[0]); part != "" {
 			out = append(out, part)
 		}
 	}

From bf85b32c1d11dcfa2202daa6d1ad2addae2d1619 Mon Sep 17 00:00:00 2001
From: htobenothing <htobenothing@gmail.com>
Date: Thu, 21 Jun 2018 09:53:52 +0800
Subject: [PATCH 02/16] Add Pusher() function for support http2 server push
 (#1273)

gin already support http2, while previously not support server push.
Add Pusher() function to extend the ResponseWriter interface.

```golang
// get http.Pusher
 if pusher := c.Writer.Pusher(); pusher != nil {
     // use pusher.Push() to do server push
}
```
<img width="881" alt="screen shot 2018-03-07 at 11 20 49 pm" src="https://user-images.githubusercontent.com/16014993/37100619-680c00c6-225e-11e8-9352-76ec3bd62894.png">
---
 README.md                                | 50 ++++++++++++++++++++++++
 examples/http-pusher/assets/app.js       |  1 +
 examples/http-pusher/main.go             | 41 +++++++++++++++++++
 examples/http-pusher/testdata/ca.pem     | 15 +++++++
 examples/http-pusher/testdata/server.key | 16 ++++++++
 examples/http-pusher/testdata/server.pem | 16 ++++++++
 response_writer.go                       |  2 +-
 response_writer_1.7.go                   | 12 ++++++
 response_writer_1.8.go                   | 25 ++++++++++++
 9 files changed, 177 insertions(+), 1 deletion(-)
 create mode 100644 examples/http-pusher/assets/app.js
 create mode 100644 examples/http-pusher/main.go
 create mode 100644 examples/http-pusher/testdata/ca.pem
 create mode 100644 examples/http-pusher/testdata/server.key
 create mode 100644 examples/http-pusher/testdata/server.pem
 create mode 100644 response_writer_1.7.go
 create mode 100644 response_writer_1.8.go

diff --git a/README.md b/README.md
index 0bac65b2..c2917a5f 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,7 @@ Gin is a web framework written in Go (Golang). It features a martini-like API wi
     - [Build a single binary with templates](#build-a-single-binary-with-templates)
     - [Bind form-data request with custom struct](#bind-form-data-request-with-custom-struct)
     - [Try to bind body into different structs](#try-to-bind-body-into-different-structs)
+    - [http2 server push](#http2-server-push)
 - [Testing](#testing)
 - [Users](#users--)
 
@@ -1656,6 +1657,55 @@ enough to call binding at once.
 can be called by `c.ShouldBind()` multiple times without any damage to
 performance (See [#1341](https://github.com/gin-gonic/gin/pull/1341)).
 
+### http2 server push
+
+http.Pusher is supported only **go1.8+**. See the [golang blog](https://blog.golang.org/h2push) for detail information.
+
+[embedmd]:# (examples/http-pusher/main.go go)
+```go
+package main
+
+import (
+	"html/template"
+	"log"
+
+	"github.com/gin-gonic/gin"
+)
+
+var html = template.Must(template.New("https").Parse(`
+<html>
+<head>
+  <title>Https Test</title>
+  <script src="/assets/app.js"></script>
+</head>
+<body>
+  <h1 style="color:red;">Welcome, Ginner!</h1>
+</body>
+</html>
+`))
+
+func main() {
+	r := gin.Default()
+	r.Static("/assets", "./assets")
+	r.SetHTMLTemplate(html)
+
+	r.GET("/", func(c *gin.Context) {
+		if pusher := c.Writer.Pusher(); pusher != nil {
+			// use pusher.Push() to do server push
+			if err := pusher.Push("/assets/app.js", nil); err != nil {
+				log.Printf("Failed to push: %v", err)
+			}
+		}
+		c.HTML(200, "https", gin.H{
+			"status": "success",
+		})
+	})
+
+	// Listen and Server in https://127.0.0.1:8080
+	r.RunTLS(":8080", "./testdata/server.pem", "./testdata/server.key")
+}
+```
+
 ## Testing
 
 The `net/http/httptest` package is preferable way for HTTP testing.
diff --git a/examples/http-pusher/assets/app.js b/examples/http-pusher/assets/app.js
new file mode 100644
index 00000000..05271b67
--- /dev/null
+++ b/examples/http-pusher/assets/app.js
@@ -0,0 +1 @@
+console.log("http2 pusher");
diff --git a/examples/http-pusher/main.go b/examples/http-pusher/main.go
new file mode 100644
index 00000000..d4f33aa0
--- /dev/null
+++ b/examples/http-pusher/main.go
@@ -0,0 +1,41 @@
+package main
+
+import (
+	"html/template"
+	"log"
+
+	"github.com/gin-gonic/gin"
+)
+
+var html = template.Must(template.New("https").Parse(`
+<html>
+<head>
+  <title>Https Test</title>
+  <script src="/assets/app.js"></script>
+</head>
+<body>
+  <h1 style="color:red;">Welcome, Ginner!</h1>
+</body>
+</html>
+`))
+
+func main() {
+	r := gin.Default()
+	r.Static("/assets", "./assets")
+	r.SetHTMLTemplate(html)
+
+	r.GET("/", func(c *gin.Context) {
+		if pusher := c.Writer.Pusher(); pusher != nil {
+			// use pusher.Push() to do server push
+			if err := pusher.Push("/assets/app.js", nil); err != nil {
+				log.Printf("Failed to push: %v", err)
+			}
+		}
+		c.HTML(200, "https", gin.H{
+			"status": "success",
+		})
+	})
+
+	// Listen and Server in https://127.0.0.1:8080
+	r.RunTLS(":8080", "./testdata/server.pem", "./testdata/server.key")
+}
diff --git a/examples/http-pusher/testdata/ca.pem b/examples/http-pusher/testdata/ca.pem
new file mode 100644
index 00000000..6c8511a7
--- /dev/null
+++ b/examples/http-pusher/testdata/ca.pem
@@ -0,0 +1,15 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/examples/http-pusher/testdata/server.key b/examples/http-pusher/testdata/server.key
new file mode 100644
index 00000000..143a5b87
--- /dev/null
+++ b/examples/http-pusher/testdata/server.key
@@ -0,0 +1,16 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/examples/http-pusher/testdata/server.pem b/examples/http-pusher/testdata/server.pem
new file mode 100644
index 00000000..f3d43fcc
--- /dev/null
+++ b/examples/http-pusher/testdata/server.pem
@@ -0,0 +1,16 @@
+-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
diff --git a/response_writer.go b/response_writer.go
index 232f00aa..14b1cfc3 100644
--- a/response_writer.go
+++ b/response_writer.go
@@ -16,7 +16,7 @@ const (
 	defaultStatus = 200
 )
 
-type ResponseWriter interface {
+type responseWriterBase interface {
 	http.ResponseWriter
 	http.Hijacker
 	http.Flusher
diff --git a/response_writer_1.7.go b/response_writer_1.7.go
new file mode 100644
index 00000000..801d196b
--- /dev/null
+++ b/response_writer_1.7.go
@@ -0,0 +1,12 @@
+// +build !go1.8
+
+// 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.
+
+package gin
+
+// ResponseWriter ...
+type ResponseWriter interface {
+	responseWriterBase
+}
diff --git a/response_writer_1.8.go b/response_writer_1.8.go
new file mode 100644
index 00000000..527c0038
--- /dev/null
+++ b/response_writer_1.8.go
@@ -0,0 +1,25 @@
+// +build go1.8
+
+// 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.
+
+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
+}

From 737d2fb7ab4ad358c5fa01b7a08ce346dcaebd79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Fri, 22 Jun 2018 09:51:06 +0800
Subject: [PATCH 03/16] add grpc example (#1401)

use grpc helloworld example.
---
 Makefile                          |   3 +-
 coverage.sh                       |   2 +-
 examples/grpc/README.md           |  19 ++++
 examples/grpc/gin/main.go         |  46 +++++++++
 examples/grpc/grpc/server.go      |  34 +++++++
 examples/grpc/pb/helloworld.pb.go | 151 ++++++++++++++++++++++++++++++
 examples/grpc/pb/helloworld.proto |  37 ++++++++
 7 files changed, 290 insertions(+), 2 deletions(-)
 create mode 100644 examples/grpc/README.md
 create mode 100644 examples/grpc/gin/main.go
 create mode 100644 examples/grpc/grpc/server.go
 create mode 100644 examples/grpc/pb/helloworld.pb.go
 create mode 100644 examples/grpc/pb/helloworld.proto

diff --git a/Makefile b/Makefile
index 5468563a..51b9969f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 GOFMT ?= gofmt "-s"
 PACKAGES ?= $(shell go list ./... | grep -v /vendor/)
+VETPACKAGES ?= $(shell go list ./... | grep -v /vendor/ | grep -v /examples/)
 GOFILES := $(shell find . -name "*.go" -type f -not -path "./vendor/*")
 
 all: install
@@ -26,7 +27,7 @@ fmt-check:
 	fi;
 
 vet:
-	go vet $(PACKAGES)
+	go vet $(VETPACKAGES)
 
 deps:
 	@hash govendor > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
diff --git a/coverage.sh b/coverage.sh
index 81437f91..4d1ee036 100644
--- a/coverage.sh
+++ b/coverage.sh
@@ -4,7 +4,7 @@ set -e
 
 echo "mode: count" > coverage.out
 
-for d in $(go list ./... | grep -E 'gin$|binding$|render$'); do
+for d in $(go list ./... | grep -E 'gin$|binding$|render$' | grep -v 'examples'); do
     go test -v -covermode=count -coverprofile=profile.out $d
     if [ -f profile.out ]; then
         cat profile.out | grep -v "mode:" >> coverage.out
diff --git a/examples/grpc/README.md b/examples/grpc/README.md
new file mode 100644
index 00000000..a96d3c1c
--- /dev/null
+++ b/examples/grpc/README.md
@@ -0,0 +1,19 @@
+## How to run this example
+
+1. run grpc server
+
+```sh
+$ go run grpc/server.go
+```
+
+2. run gin server
+
+```sh
+$ go run gin/main.go
+```
+
+3. use curl command to test it
+
+```sh
+$ curl -v 'http://localhost:8052/rest/n/thinkerou'
+```
diff --git a/examples/grpc/gin/main.go b/examples/grpc/gin/main.go
new file mode 100644
index 00000000..c21692ae
--- /dev/null
+++ b/examples/grpc/gin/main.go
@@ -0,0 +1,46 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	pb "github.com/gin-gonic/gin/examples/grpc/pb"
+	"google.golang.org/grpc"
+)
+
+func main() {
+	// Set up a connection to the server.
+	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())
+	if err != nil {
+		log.Fatalf("did not connect: %v", err)
+	}
+	defer conn.Close()
+	client := pb.NewGreeterClient(conn)
+
+	// Set up a http setver.
+	r := gin.Default()
+	r.GET("/rest/n/:name", func(c *gin.Context) {
+		name := c.Param("name")
+
+		// Contact the server and print out its response.
+		req := &pb.HelloRequest{Name: name}
+		res, err := client.SayHello(g, req)
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{
+				"error": err.Error(),
+			})
+			return
+		}
+
+		c.JSON(http.StatusOK, gin.H{
+			"result": fmt.Sprint(res.Message),
+		})
+	})
+
+	// Run http server
+	if err := r.Run(":8052"); err != nil {
+		log.Fatalf("could not run server: %v", err)
+	}
+}
diff --git a/examples/grpc/grpc/server.go b/examples/grpc/grpc/server.go
new file mode 100644
index 00000000..d9bf9fc5
--- /dev/null
+++ b/examples/grpc/grpc/server.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"log"
+	"net"
+
+	pb "github.com/gin-gonic/gin/examples/grpc/pb"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+)
+
+// server is used to implement helloworld.GreeterServer.
+type server struct{}
+
+// SayHello implements helloworld.GreeterServer
+func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
+	return &pb.HelloReply{Message: "Hello " + in.Name}, nil
+}
+
+func main() {
+	lis, err := net.Listen("tcp", ":50051")
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+	s := grpc.NewServer()
+	pb.RegisterGreeterServer(s, &server{})
+
+	// Register reflection service on gRPC server.
+	reflection.Register(s)
+	if err := s.Serve(lis); err != nil {
+		log.Fatalf("failed to serve: %v", err)
+	}
+}
diff --git a/examples/grpc/pb/helloworld.pb.go b/examples/grpc/pb/helloworld.pb.go
new file mode 100644
index 00000000..c8c8942a
--- /dev/null
+++ b/examples/grpc/pb/helloworld.pb.go
@@ -0,0 +1,151 @@
+// Code generated by protoc-gen-go.
+// source: helloworld.proto
+// DO NOT EDIT!
+
+/*
+Package helloworld is a generated protocol buffer package.
+
+It is generated from these files:
+	helloworld.proto
+
+It has these top-level messages:
+	HelloRequest
+	HelloReply
+*/
+package helloworld
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import (
+	context "golang.org/x/net/context"
+	grpc "google.golang.org/grpc"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// The request message containing the user's name.
+type HelloRequest struct {
+	Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+}
+
+func (m *HelloRequest) Reset()                    { *m = HelloRequest{} }
+func (m *HelloRequest) String() string            { return proto.CompactTextString(m) }
+func (*HelloRequest) ProtoMessage()               {}
+func (*HelloRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+// The response message containing the greetings
+type HelloReply struct {
+	Message string `protobuf:"bytes,1,opt,name=message" json:"message,omitempty"`
+}
+
+func (m *HelloReply) Reset()                    { *m = HelloReply{} }
+func (m *HelloReply) String() string            { return proto.CompactTextString(m) }
+func (*HelloReply) ProtoMessage()               {}
+func (*HelloReply) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+func init() {
+	proto.RegisterType((*HelloRequest)(nil), "helloworld.HelloRequest")
+	proto.RegisterType((*HelloReply)(nil), "helloworld.HelloReply")
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// Client API for Greeter service
+
+type GreeterClient interface {
+	// Sends a greeting
+	SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error)
+}
+
+type greeterClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewGreeterClient(cc *grpc.ClientConn) GreeterClient {
+	return &greeterClient{cc}
+}
+
+func (c *greeterClient) SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) {
+	out := new(HelloReply)
+	err := grpc.Invoke(ctx, "/helloworld.Greeter/SayHello", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Greeter service
+
+type GreeterServer interface {
+	// Sends a greeting
+	SayHello(context.Context, *HelloRequest) (*HelloReply, error)
+}
+
+func RegisterGreeterServer(s *grpc.Server, srv GreeterServer) {
+	s.RegisterService(&_Greeter_serviceDesc, srv)
+}
+
+func _Greeter_SayHello_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HelloRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(GreeterServer).SayHello(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/helloworld.Greeter/SayHello",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(GreeterServer).SayHello(ctx, req.(*HelloRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _Greeter_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "helloworld.Greeter",
+	HandlerType: (*GreeterServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "SayHello",
+			Handler:    _Greeter_SayHello_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "helloworld.proto",
+}
+
+func init() { proto.RegisterFile("helloworld.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 174 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x12, 0xc8, 0x48, 0xcd, 0xc9,
+	0xc9, 0x2f, 0xcf, 0x2f, 0xca, 0x49, 0xd1, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x42, 0x88,
+	0x28, 0x29, 0x71, 0xf1, 0x78, 0x80, 0x78, 0x41, 0xa9, 0x85, 0xa5, 0xa9, 0xc5, 0x25, 0x42, 0x42,
+	0x5c, 0x2c, 0x79, 0x89, 0xb9, 0xa9, 0x12, 0x8c, 0x0a, 0x8c, 0x1a, 0x9c, 0x41, 0x60, 0xb6, 0x92,
+	0x1a, 0x17, 0x17, 0x54, 0x4d, 0x41, 0x4e, 0xa5, 0x90, 0x04, 0x17, 0x7b, 0x6e, 0x6a, 0x71, 0x71,
+	0x62, 0x3a, 0x4c, 0x11, 0x8c, 0x6b, 0xe4, 0xc9, 0xc5, 0xee, 0x5e, 0x94, 0x9a, 0x5a, 0x92, 0x5a,
+	0x24, 0x64, 0xc7, 0xc5, 0x11, 0x9c, 0x58, 0x09, 0xd6, 0x25, 0x24, 0xa1, 0x87, 0xe4, 0x02, 0x64,
+	0xcb, 0xa4, 0xc4, 0xb0, 0xc8, 0x00, 0xad, 0x50, 0x62, 0x70, 0x32, 0xe0, 0x92, 0xce, 0xcc, 0xd7,
+	0x4b, 0x2f, 0x2a, 0x48, 0xd6, 0x4b, 0xad, 0x48, 0xcc, 0x2d, 0xc8, 0x49, 0x2d, 0x46, 0x52, 0xeb,
+	0xc4, 0x0f, 0x56, 0x1c, 0x0e, 0x62, 0x07, 0x80, 0xbc, 0x14, 0xc0, 0x98, 0xc4, 0x06, 0xf6, 0x9b,
+	0x31, 0x20, 0x00, 0x00, 0xff, 0xff, 0x0f, 0xb7, 0xcd, 0xf2, 0xef, 0x00, 0x00, 0x00,
+}
diff --git a/examples/grpc/pb/helloworld.proto b/examples/grpc/pb/helloworld.proto
new file mode 100644
index 00000000..d79a6a0d
--- /dev/null
+++ b/examples/grpc/pb/helloworld.proto
@@ -0,0 +1,37 @@
+// Copyright 2015 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "io.grpc.examples.helloworld";
+option java_outer_classname = "HelloWorldProto";
+
+package helloworld;
+
+// The greeting service definition.
+service Greeter {
+  // Sends a greeting
+  rpc SayHello (HelloRequest) returns (HelloReply) {}
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+  string name = 1;
+}
+
+// The response message containing the greetings
+message HelloReply {
+  string message = 1;
+}

From 605aa1c30f196733a90a4f773b691d2350a30e00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Fri, 22 Jun 2018 23:44:45 +0800
Subject: [PATCH 04/16] example: fix typo for grpc (#1405)

sorry...fixed #1403
---
 examples/grpc/gin/main.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/grpc/gin/main.go b/examples/grpc/gin/main.go
index c21692ae..edc1ca9b 100644
--- a/examples/grpc/gin/main.go
+++ b/examples/grpc/gin/main.go
@@ -26,7 +26,7 @@ func main() {
 
 		// Contact the server and print out its response.
 		req := &pb.HelloRequest{Name: name}
-		res, err := client.SayHello(g, req)
+		res, err := client.SayHello(c, req)
 		if err != nil {
 			c.JSON(http.StatusInternalServerError, gin.H{
 				"error": err.Error(),

From 8035359102b5384ad1f860675c85c0238b06b6e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Sat, 23 Jun 2018 00:08:58 +0800
Subject: [PATCH 05/16] use strings.Split instead of strings.IndexByte (#1406)

---
 context.go | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)
 mode change 100755 => 100644 context.go

diff --git a/context.go b/context.go
old mode 100755
new mode 100644
index 462357e1..6a84de5e
--- a/context.go
+++ b/context.go
@@ -539,14 +539,10 @@ func (c *Context) ShouldBindBodyWith(
 func (c *Context) ClientIP() string {
 	if c.engine.ForwardedByClientIP {
 		clientIP := c.requestHeader("X-Forwarded-For")
-		if index := strings.IndexByte(clientIP, ','); index >= 0 {
-			clientIP = clientIP[0:index]
+		clientIP = strings.TrimSpace(strings.Split(clientIP, ",")[0])
+		if clientIP == "" {
+			clientIP = strings.TrimSpace(c.requestHeader("X-Real-Ip"))
 		}
-		clientIP = strings.TrimSpace(clientIP)
-		if clientIP != "" {
-			return clientIP
-		}
-		clientIP = strings.TrimSpace(c.requestHeader("X-Real-Ip"))
 		if clientIP != "" {
 			return clientIP
 		}

From 760d0574db7432376d91b53dba9146c1f32d28c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Sat, 23 Jun 2018 00:45:43 +0800
Subject: [PATCH 06/16] vendor: remove vendor package from example folder
 (#1402)

updated `vendor.json` is ok.
but set `ignore test` in `vendor.json`, `x/net/context` package only use in `context_test.go`, I don't know why vendor still need it.
please @appleboy review the pull request, thanks a lot.
---
 vendor/vendor.json | 61 ----------------------------------------------
 1 file changed, 61 deletions(-)

diff --git a/vendor/vendor.json b/vendor/vendor.json
index 5ace49df..c34c2de3 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -9,61 +9,30 @@
 			"revision": "346938d642f2ec3594ed81d874461961cd0faa76",
 			"revisionTime": "2016-10-29T20:57:26Z"
 		},
-		{
-			"checksumSHA1": "7c3FuEadBInl/4ExSrB7iJMXpe4=",
-			"path": "github.com/dustin/go-broadcast",
-			"revision": "3bdf6d4a7164a50bc19d5f230e2981d87d2584f1",
-			"revisionTime": "2014-06-27T04:00:55Z"
-		},
 		{
 			"checksumSHA1": "QeKwBtN2df+j+4stw3bQJ6yO4EY=",
 			"path": "github.com/gin-contrib/sse",
 			"revision": "22d885f9ecc78bf4ee5d72b937e4bbcdc58e8cae",
 			"revisionTime": "2017-01-09T09:34:21Z"
 		},
-		{
-			"checksumSHA1": "+vZNyF2MykVjenLg1TpjjgjthV0=",
-			"path": "github.com/gin-gonic/autotls",
-			"revision": "8ca25fbde72bb72a00466215b94b489c71fcb815",
-			"revisionTime": "2017-09-16T16:54:15Z"
-		},
 		{
 			"checksumSHA1": "qlPUeFabwF4RKAOF1H+yBFU1Veg=",
 			"path": "github.com/golang/protobuf/proto",
 			"revision": "5a0f697c9ed9d68fef0116532c6e05cfeae00e55",
 			"revisionTime": "2017-06-01T23:02:30Z"
 		},
-		{
-			"checksumSHA1": "Cq9h7eDNXXyR/qJPvO8/Rk4pmFg=",
-			"path": "github.com/jessevdk/go-assets",
-			"revision": "4f4301a06e153ff90e17793577ab6bf79f8dc5c5",
-			"revisionTime": "2016-09-21T14:41:39Z"
-		},
 		{
 			"checksumSHA1": "Ajh8TemnItg4nn+jKmVcsMRALBc=",
 			"path": "github.com/json-iterator/go",
 			"revision": "36b14963da70d11297d313183d7e6388c8510e1e",
 			"revisionTime": "2017-08-29T15:58:51Z"
 		},
-		{
-			"checksumSHA1": "9if9IBLsxkarJ804NPWAzgskIAk=",
-			"path": "github.com/manucorporat/stats",
-			"revision": "8f2d6ace262eba462e9beb552382c98be51d807b",
-			"revisionTime": "2015-05-31T20:46:25Z"
-		},
 		{
 			"checksumSHA1": "U6lX43KDDlNOn+Z0Yyww+ZzHfFo=",
 			"path": "github.com/mattn/go-isatty",
 			"revision": "57fdcb988a5c543893cc61bce354a6e24ab70022",
 			"revisionTime": "2017-03-07T16:30:44Z"
 		},
-		{
-			"checksumSHA1": "LuFv4/jlrmFNnDb/5SCSEPAM9vU=",
-			"comment": "v1.0.0",
-			"path": "github.com/pmezard/go-difflib/difflib",
-			"revision": "792786c7400a136282c1664665ae0a8db921c6c2",
-			"revisionTime": "2016-01-10T10:55:54Z"
-		},
 		{
 			"checksumSHA1": "Q2V7Zs3diLmLfmfbiuLpSxETSuY=",
 			"comment": "v1.1.4",
@@ -71,30 +40,12 @@
 			"revision": "976c720a22c8eb4eb6a0b4348ad85ad12491a506",
 			"revisionTime": "2016-09-25T22:06:09Z"
 		},
-		{
-			"checksumSHA1": "IopMW+arBezL5bqOfrVU6UEfn28=",
-			"path": "github.com/thinkerou/favicon",
-			"revision": "94a442a49da6e2d44bdd5e0d2e2e185c43a19d93",
-			"revisionTime": "2017-07-10T14:05:20Z"
-		},
 		{
 			"checksumSHA1": "CoxdaTYdPZNJXr8mJfLxye428N0=",
 			"path": "github.com/ugorji/go/codec",
 			"revision": "c88ee250d0221a57af388746f5cf03768c21d6e2",
 			"revisionTime": "2017-02-15T20:11:44Z"
 		},
-		{
-			"checksumSHA1": "W0j4I7QpxXlChjyhAojZmFjU6Bg=",
-			"path": "golang.org/x/crypto/acme",
-			"revision": "adbae1b6b6fb4b02448a0fc0dbbc9ba2b95b294d",
-			"revisionTime": "2017-06-19T06:03:41Z"
-		},
-		{
-			"checksumSHA1": "TrKJW+flz7JulXU3sqnBJjGzgQc=",
-			"path": "golang.org/x/crypto/acme/autocert",
-			"revision": "adbae1b6b6fb4b02448a0fc0dbbc9ba2b95b294d",
-			"revisionTime": "2017-06-19T06:03:41Z"
-		},
 		{
 			"checksumSHA1": "9jjO5GjLa0XF/nfWihF02RoH4qc=",
 			"comment": "release-branch.go1.7",
@@ -102,18 +53,6 @@
 			"revision": "d4c55e66d8c3a2f3382d264b08e3e3454a66355a",
 			"revisionTime": "2016-10-18T08:54:36Z"
 		},
-		{
-			"checksumSHA1": "S0DP7Pn7sZUmXc55IzZnNvERu6s=",
-			"path": "golang.org/x/sync/errgroup",
-			"revision": "8e0aa688b654ef28caa72506fa5ec8dba9fc7690",
-			"revisionTime": "2017-07-19T03:38:01Z"
-		},
-		{
-			"checksumSHA1": "TVEkpH3gq84iQ39I4R+mlDwjuVI=",
-			"path": "golang.org/x/sys/unix",
-			"revision": "99f16d856c9836c42d24e7ab64ea72916925fa97",
-			"revisionTime": "2017-03-08T15:04:45Z"
-		},
 		{
 			"checksumSHA1": "39V1idWER42Lmcmg2Uy40wMzOlo=",
 			"comment": "v8.18.1",

From 1f59bad84b577735b27a1ee855f01ed2f50cd88b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Sat, 23 Jun 2018 11:06:27 +0800
Subject: [PATCH 07/16] add an edge case from httprouter (#1407)

---
 path.go      | 2 +-
 path_test.go | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/path.go b/path.go
index ed63ad1a..1c2b8498 100644
--- a/path.go
+++ b/path.go
@@ -41,7 +41,7 @@ func cleanPath(p string) string {
 		buf[0] = '/'
 	}
 
-	trailing := n > 2 && p[n-1] == '/'
+	trailing := n > 1 && p[n-1] == '/'
 
 	// A bit more clunky without a 'lazybuf' like the path package, but the loop
 	// gets completely inlined (bufApp). So in contrast to the path package this
diff --git a/path_test.go b/path_test.go
index 4a6d945b..c1e6ed4f 100644
--- a/path_test.go
+++ b/path_test.go
@@ -24,6 +24,7 @@ var cleanTests = []struct {
 
 	// missing root
 	{"", "/"},
+	{"a/", "/a/"},
 	{"abc", "/abc"},
 	{"abc/def", "/abc/def"},
 	{"a/b/c", "/a/b/c"},

From 6c6d97ba2e7eeaf78e20fc4344b21c4e057e2a9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Tue, 26 Jun 2018 17:21:32 +0800
Subject: [PATCH 08/16] remove hardcode instead of http status value (#1411)

---
 auth.go            |  3 ++-
 context.go         |  6 +++---
 gin.go             | 12 ++++++------
 recovery.go        |  3 ++-
 response_writer.go |  2 +-
 routergroup.go     |  2 +-
 6 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/auth.go b/auth.go
index c2143091..9ed81b5d 100644
--- a/auth.go
+++ b/auth.go
@@ -7,6 +7,7 @@ package gin
 import (
 	"crypto/subtle"
 	"encoding/base64"
+	"net/http"
 	"strconv"
 )
 
@@ -51,7 +52,7 @@ func BasicAuthForRealm(accounts Accounts, realm string) HandlerFunc {
 		if !found {
 			// Credentials doesn't match, we return 401 and abort handlers chain.
 			c.Header("WWW-Authenticate", realm)
-			c.AbortWithStatus(401)
+			c.AbortWithStatus(http.StatusUnauthorized)
 			return
 		}
 
diff --git a/context.go b/context.go
index 6a84de5e..65fbb629 100644
--- a/context.go
+++ b/context.go
@@ -474,7 +474,7 @@ func (c *Context) BindQuery(obj interface{}) error {
 // See the binding package.
 func (c *Context) MustBindWith(obj interface{}, b binding.Binding) (err error) {
 	if err = c.ShouldBindWith(obj, b); err != nil {
-		c.AbortWithError(400, err).SetType(ErrorTypeBind)
+		c.AbortWithError(http.StatusBadRequest, err).SetType(ErrorTypeBind)
 	}
 
 	return
@@ -589,9 +589,9 @@ func bodyAllowedForStatus(status int) bool {
 	switch {
 	case status >= 100 && status <= 199:
 		return false
-	case status == 204:
+	case status == http.StatusNoContent:
 		return false
-	case status == 304:
+	case status == http.StatusNotModified:
 		return false
 	}
 	return true
diff --git a/gin.go b/gin.go
index b91fc2fa..65d6d446 100644
--- a/gin.go
+++ b/gin.go
@@ -378,14 +378,14 @@ func (engine *Engine) handleHTTPRequest(c *Context) {
 			if tree.method != httpMethod {
 				if handlers, _, _ := tree.root.getValue(path, nil, unescape); handlers != nil {
 					c.handlers = engine.allNoMethod
-					serveError(c, 405, default405Body)
+					serveError(c, http.StatusMethodNotAllowed, default405Body)
 					return
 				}
 			}
 		}
 	}
 	c.handlers = engine.allNoRoute
-	serveError(c, 404, default404Body)
+	serveError(c, http.StatusNotFound, default404Body)
 }
 
 var mimePlain = []string{MIMEPlain}
@@ -406,9 +406,9 @@ func serveError(c *Context, code int, defaultMessage []byte) {
 func redirectTrailingSlash(c *Context) {
 	req := c.Request
 	path := req.URL.Path
-	code := 301 // Permanent redirect, request with GET method
+	code := http.StatusMovedPermanently // Permanent redirect, request with GET method
 	if req.Method != "GET" {
-		code = 307
+		code = http.StatusTemporaryRedirect
 	}
 
 	if length := len(path); length > 1 && path[length-1] == '/' {
@@ -430,9 +430,9 @@ func redirectFixedPath(c *Context, root *node, trailingSlash bool) bool {
 		trailingSlash,
 	)
 	if found {
-		code := 301 // Permanent redirect, request with GET method
+		code := http.StatusMovedPermanently // Permanent redirect, request with GET method
 		if req.Method != "GET" {
-			code = 307
+			code = http.StatusTemporaryRedirect
 		}
 		req.URL.Path = string(fixedPath)
 		debugPrint("redirecting request %d: %s --> %s", code, path, req.URL.String())
diff --git a/recovery.go b/recovery.go
index dcbeba74..61c5bd53 100644
--- a/recovery.go
+++ b/recovery.go
@@ -10,6 +10,7 @@ import (
 	"io"
 	"io/ioutil"
 	"log"
+	"net/http"
 	"net/http/httputil"
 	"runtime"
 	"time"
@@ -41,7 +42,7 @@ func RecoveryWithWriter(out io.Writer) HandlerFunc {
 					httprequest, _ := httputil.DumpRequest(c.Request, false)
 					logger.Printf("[Recovery] %s panic recovered:\n%s\n%s\n%s%s", timeFormat(time.Now()), string(httprequest), err, stack, reset)
 				}
-				c.AbortWithStatus(500)
+				c.AbortWithStatus(http.StatusInternalServerError)
 			}
 		}()
 		c.Next()
diff --git a/response_writer.go b/response_writer.go
index 14b1cfc3..166ae8c3 100644
--- a/response_writer.go
+++ b/response_writer.go
@@ -13,7 +13,7 @@ import (
 
 const (
 	noWritten     = -1
-	defaultStatus = 200
+	defaultStatus = http.StatusOK
 )
 
 type responseWriterBase interface {
diff --git a/routergroup.go b/routergroup.go
index 53045d10..876a61b8 100644
--- a/routergroup.go
+++ b/routergroup.go
@@ -184,7 +184,7 @@ func (group *RouterGroup) createStaticHandler(relativePath string, fs http.FileS
 	_, nolisting := fs.(*onlyfilesFS)
 	return func(c *Context) {
 		if nolisting {
-			c.Writer.WriteHeader(404)
+			c.Writer.WriteHeader(http.StatusNotFound)
 		}
 		fileServer.ServeHTTP(c.Writer, c.Request)
 	}

From c00f21ff239822d013b80e54bd403fbc08a0b5ff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Tue, 26 Jun 2018 18:56:43 +0800
Subject: [PATCH 09/16] add go version prerequisite and debug warning (#1394)

* add go version prerequisite and debug warning

* merge duplicate content

* remove duplicate content
---
 README.md     | 113 +++++++++++++++++++++++++++-----------------------
 debug.go      |   3 ++
 debug_test.go |   2 +-
 3 files changed, 64 insertions(+), 54 deletions(-)

diff --git a/README.md b/README.md
index c2917a5f..e09a51f2 100644
--- a/README.md
+++ b/README.md
@@ -15,10 +15,11 @@ Gin is a web framework written in Go (Golang). It features a martini-like API wi
 
 ## Contents
 
+- [Installation](#installation)
+- [Prerequisite](#prerequisite)
 - [Quick start](#quick-start)
 - [Benchmarks](#benchmarks)
 - [Gin v1.stable](#gin-v1-stable)
-- [Start using it](#start-using-it)
 - [Build with jsoniter](#build-with-jsoniter)
 - [API Examples](#api-examples)
     - [Using GET,POST,PUT,PATCH,DELETE and OPTIONS](#using-get-post-put-patch-delete-and-options)
@@ -58,6 +59,64 @@ Gin is a web framework written in Go (Golang). It features a martini-like API wi
 - [Testing](#testing)
 - [Users](#users--)
 
+## Installation
+
+To install Gin package, you need to install Go and set your Go workspace first.
+
+1. Download and install it:
+
+```sh
+$ go get -u github.com/gin-gonic/gin
+```
+
+2. Import it in your code:
+
+```go
+import "github.com/gin-gonic/gin"
+```
+
+3. (Optional) Import `net/http`. This is required for example if using constants such as `http.StatusOK`.
+
+```go
+import "net/http"
+```
+
+### Use a vendor tool like [Govendor](https://github.com/kardianos/govendor)
+
+1. `go get` govendor
+
+```sh
+$ go get github.com/kardianos/govendor
+```
+2. Create your project folder and `cd` inside
+
+```sh
+$ mkdir -p $GOPATH/src/github.com/myusername/project && cd "$_"
+```
+
+3. Vendor init your project and add gin
+
+```sh
+$ govendor init
+$ govendor fetch github.com/gin-gonic/gin@v1.2
+```
+
+4. Copy a starting template inside your project
+
+```sh
+$ curl https://raw.githubusercontent.com/gin-gonic/gin/master/examples/basic/main.go > main.go
+```
+
+5. Run your project
+
+```sh
+$ go run main.go
+```
+
+## Prerequisite
+
+Now Gin requires Go 1.6 or later and Go 1.7 will be required soon.
+
 ## Quick start
  
 ```sh
@@ -135,58 +194,6 @@ BenchmarkVulcan_GithubAll                   |    5000    |   394253    |   19894
 - [x] Battle tested
 - [x] API frozen, new releases will not break your code.
 
-## Start using it
-
-1. Download and install it:
-
-```sh
-$ go get github.com/gin-gonic/gin
-```
-
-2. Import it in your code:
-
-```go
-import "github.com/gin-gonic/gin"
-```
-
-3. (Optional) Import `net/http`. This is required for example if using constants such as `http.StatusOK`.
-
-```go
-import "net/http"
-```
-
-### Use a vendor tool like [Govendor](https://github.com/kardianos/govendor)
-
-1. `go get` govendor
-
-```sh
-$ go get github.com/kardianos/govendor
-```
-2. Create your project folder and `cd` inside
-
-```sh
-$ mkdir -p $GOPATH/src/github.com/myusername/project && cd "$_"
-```
-
-3. Vendor init your project and add gin
-
-```sh
-$ govendor init
-$ govendor fetch github.com/gin-gonic/gin@v1.2
-```
-
-4. Copy a starting template inside your project
-
-```sh
-$ curl https://raw.githubusercontent.com/gin-gonic/gin/master/examples/basic/main.go > main.go
-```
-
-5. Run your project
-
-```sh
-$ go run main.go
-```
-
 ## Build with [jsoniter](https://github.com/json-iterator/go)
 
 Gin use `encoding/json` as default json package but you can change to [jsoniter](https://github.com/json-iterator/go) by build from other tags.
diff --git a/debug.go b/debug.go
index 897c4943..f11156b3 100644
--- a/debug.go
+++ b/debug.go
@@ -47,6 +47,9 @@ func debugPrint(format string, values ...interface{}) {
 }
 
 func debugPrintWARNINGDefault() {
+	debugPrint(`[WARNING] Now Gin requires Go 1.6 or later and Go 1.7 will be required soon.
+
+`)
 	debugPrint(`[WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.
 
 `)
diff --git a/debug_test.go b/debug_test.go
index dfd54c82..440173b7 100644
--- a/debug_test.go
+++ b/debug_test.go
@@ -92,7 +92,7 @@ func TestDebugPrintWARNINGDefault(t *testing.T) {
 	defer teardown()
 
 	debugPrintWARNINGDefault()
-	assert.Equal(t, "[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", w.String())
+	assert.Equal(t, "[GIN-debug] [WARNING] Now Gin requires Go 1.6 or later and Go 1.7 will be required soon.\n\n[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.\n\n", w.String())
 }
 
 func TestDebugPrintWARNINGNew(t *testing.T) {

From eb9f313144e6768d91421855810ed5937ce348c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Thu, 28 Jun 2018 17:08:09 +0800
Subject: [PATCH 10/16] add comment for context (#1413)

ref #1075
annotation from go context source.
---
 context.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/context.go b/context.go
index 65fbb629..6fc5d25f 100644
--- a/context.go
+++ b/context.go
@@ -836,18 +836,33 @@ func (c *Context) SetAccepted(formats ...string) {
 /***** GOLANG.ORG/X/NET/CONTEXT *****/
 /************************************/
 
+// Deadline returns the time when work done on behalf of this context
+// should be canceled. Deadline returns ok==false when no deadline is
+// set. Successive calls to Deadline return the same results.
 func (c *Context) Deadline() (deadline time.Time, ok bool) {
 	return
 }
 
+// Done returns a channel that's closed when work done on behalf of this
+// context should be canceled. Done may return nil if this context can
+// never be canceled. Successive calls to Done return the same value.
 func (c *Context) Done() <-chan struct{} {
 	return nil
 }
 
+// Err returns a non-nil error value after Done is closed,
+// successive calls to Err return the same error.
+// If Done is not yet closed, Err returns nil.
+// If Done is closed, Err returns a non-nil error explaining why:
+// Canceled if the context was canceled
+// or DeadlineExceeded if the context's deadline passed.
 func (c *Context) Err() error {
 	return nil
 }
 
+// Value returns the value associated with this context for key, or nil
+// if no value is associated with key. Successive calls to Value with
+// the same key returns the same result.
 func (c *Context) Value(key interface{}) interface{} {
 	if key == 0 {
 		return c.Request

From cdd02fa9d65c15de42f1a4522fcb9af28fe56cf9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Sun, 1 Jul 2018 21:10:48 +0800
Subject: [PATCH 11/16] update error(err) to err (#1416)

the pull request update `return error(err)` to `return err`, and remove `kindOfData`.
---
 binding/binding.go           |  5 ++---
 binding/default_validator.go | 19 ++++++++-----------
 2 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/binding/binding.go b/binding/binding.go
index 1a984777..3a2aad9c 100644
--- a/binding/binding.go
+++ b/binding/binding.go
@@ -4,10 +4,9 @@
 
 package binding
 
-import (
-	"net/http"
-)
+import "net/http"
 
+// Content-Type MIME of the most common data formats.
 const (
 	MIMEJSON              = "application/json"
 	MIMEHTML              = "text/html"
diff --git a/binding/default_validator.go b/binding/default_validator.go
index c67aa8a3..e7a302de 100644
--- a/binding/default_validator.go
+++ b/binding/default_validator.go
@@ -18,11 +18,17 @@ type defaultValidator struct {
 
 var _ StructValidator = &defaultValidator{}
 
+// ValidateStruct receives any kind of type, but only performed struct or pointer to struct type.
 func (v *defaultValidator) ValidateStruct(obj interface{}) error {
-	if kindOfData(obj) == reflect.Struct {
+	value := reflect.ValueOf(obj)
+	valueType := value.Kind()
+	if valueType == reflect.Ptr {
+		valueType = value.Elem().Kind()
+	}
+	if valueType == reflect.Struct {
 		v.lazyinit()
 		if err := v.validate.Struct(obj); err != nil {
-			return error(err)
+			return err
 		}
 	}
 	return nil
@@ -43,12 +49,3 @@ func (v *defaultValidator) lazyinit() {
 		v.validate = validator.New(config)
 	})
 }
-
-func kindOfData(data interface{}) reflect.Kind {
-	value := reflect.ValueOf(data)
-	valueType := value.Kind()
-	if valueType == reflect.Ptr {
-		valueType = value.Elem().Kind()
-	}
-	return valueType
-}

From 1c4cbfae59e0f62a6812b7808839eed45b66515f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=94=B0=E6=AC=A7?= <thinkerou@gmail.com>
Date: Mon, 2 Jul 2018 11:06:56 +0800
Subject: [PATCH 12/16] chore: remove duplicate code (#1418)

---
 gin.go | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/gin.go b/gin.go
index 65d6d446..3ee8018d 100644
--- a/gin.go
+++ b/gin.go
@@ -171,14 +171,14 @@ func (engine *Engine) SecureJsonPrefix(prefix string) *Engine {
 func (engine *Engine) LoadHTMLGlob(pattern string) {
 	left := engine.delims.Left
 	right := engine.delims.Right
+	templ := template.Must(template.New("").Delims(left, right).Funcs(engine.FuncMap).ParseGlob(pattern))
 
 	if IsDebugging() {
-		debugPrintLoadTemplate(template.Must(template.New("").Delims(left, right).Funcs(engine.FuncMap).ParseGlob(pattern)))
+		debugPrintLoadTemplate(templ)
 		engine.HTMLRender = render.HTMLDebug{Glob: pattern, FuncMap: engine.FuncMap, Delims: engine.delims}
 		return
 	}
 
-	templ := template.Must(template.New("").Delims(left, right).Funcs(engine.FuncMap).ParseGlob(pattern))
 	engine.SetHTMLTemplate(templ)
 }
 
@@ -425,11 +425,7 @@ func redirectFixedPath(c *Context, root *node, trailingSlash bool) bool {
 	req := c.Request
 	path := req.URL.Path
 
-	fixedPath, found := root.findCaseInsensitivePath(
-		cleanPath(path),
-		trailingSlash,
-	)
-	if found {
+	if fixedPath, ok := root.findCaseInsensitivePath(cleanPath(path), trailingSlash); ok {
 		code := http.StatusMovedPermanently // Permanent redirect, request with GET method
 		if req.Method != "GET" {
 			code = http.StatusTemporaryRedirect

From d17a12591fb637da47576b8669fabb8752fe656d Mon Sep 17 00:00:00 2001
From: vz <vzvway@gmail.com>
Date: Tue, 3 Jul 2018 15:39:18 +0800
Subject: [PATCH 13/16] update assert param(expect, actual) position (#1421)

- update assert param(expect, actual) position
---
 errors_test.go          | 18 +++++++++---------
 response_writer_test.go |  2 +-
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/errors_test.go b/errors_test.go
index a666d7c1..0626611f 100644
--- a/errors_test.go
+++ b/errors_test.go
@@ -19,17 +19,17 @@ func TestError(t *testing.T) {
 		Type: ErrorTypePrivate,
 	}
 	assert.Equal(t, err.Error(), baseError.Error())
-	assert.Equal(t, err.JSON(), H{"error": baseError.Error()})
+	assert.Equal(t, H{"error": baseError.Error()}, err.JSON())
 
 	assert.Equal(t, err.SetType(ErrorTypePublic), err)
-	assert.Equal(t, err.Type, ErrorTypePublic)
+	assert.Equal(t, ErrorTypePublic, err.Type)
 
 	assert.Equal(t, err.SetMeta("some data"), err)
-	assert.Equal(t, err.Meta, "some data")
-	assert.Equal(t, err.JSON(), H{
+	assert.Equal(t, "some data", err.Meta)
+	assert.Equal(t, H{
 		"error": baseError.Error(),
 		"meta":  "some data",
-	})
+	}, err.JSON())
 
 	jsonBytes, _ := json.Marshal(err)
 	assert.Equal(t, "{\"error\":\"test error\",\"meta\":\"some data\"}", string(jsonBytes))
@@ -38,22 +38,22 @@ func TestError(t *testing.T) {
 		"status": "200",
 		"data":   "some data",
 	})
-	assert.Equal(t, err.JSON(), H{
+	assert.Equal(t, H{
 		"error":  baseError.Error(),
 		"status": "200",
 		"data":   "some data",
-	})
+	}, err.JSON())
 
 	err.SetMeta(H{
 		"error":  "custom error",
 		"status": "200",
 		"data":   "some data",
 	})
-	assert.Equal(t, err.JSON(), H{
+	assert.Equal(t, H{
 		"error":  "custom error",
 		"status": "200",
 		"data":   "some data",
-	})
+	}, err.JSON())
 
 	type customError struct {
 		status string
diff --git a/response_writer_test.go b/response_writer_test.go
index cec27338..4289a7c1 100644
--- a/response_writer_test.go
+++ b/response_writer_test.go
@@ -51,7 +51,7 @@ func TestResponseWriterWriteHeader(t *testing.T) {
 	w.WriteHeader(300)
 	assert.False(t, w.Written())
 	assert.Equal(t, 300, w.Status())
-	assert.NotEqual(t, testWritter.Code, 300)
+	assert.NotEqual(t, 300, testWritter.Code)
 
 	w.WriteHeader(-1)
 	assert.Equal(t, 300, w.Status())

From 85221af84cf6ee99dc900bc41912abc09acfc1b5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rex=20Lee=28=E6=9D=8E=E4=BF=8A=29?= <duguying2008@gmail.com>
Date: Tue, 3 Jul 2018 17:17:08 +0800
Subject: [PATCH 14/16] add json ASCII string render (#1358)

add a json render that rendering json as ASCII string
---
 README.md             | 23 +++++++++++++++++++++++
 context.go            |  6 ++++++
 context_test.go       | 11 +++++++++++
 render/json.go        | 32 ++++++++++++++++++++++++++++++++
 render/render_test.go | 29 +++++++++++++++++++++++++++++
 5 files changed, 101 insertions(+)

diff --git a/README.md b/README.md
index e09a51f2..93896469 100644
--- a/README.md
+++ b/README.md
@@ -900,6 +900,29 @@ func main() {
 }
 ```
 
+#### AsciiJSON
+
+Using AsciiJSON to Generates ASCII-only JSON with escaped non-ASCII chracters.
+
+```go
+func main() {
+	r := gin.Default()
+
+	r.GET("/someJSON", func(c *gin.Context) {
+		data := map[string]interface{}{
+			"lang": "GO语言",
+			"tag":  "<br>",
+		}
+
+		// will output : {"lang":"GO\u8bed\u8a00","tag":"\u003cbr\u003e"}
+		c.AsciiJSON(http.StatusOK, data)
+	})
+
+	// Listen and serve on 0.0.0.0:8080
+	r.Run(":8080")
+}
+```
+
 ### Serving static files
 
 ```go
diff --git a/context.go b/context.go
index 6fc5d25f..d0b4e87f 100644
--- a/context.go
+++ b/context.go
@@ -704,6 +704,12 @@ func (c *Context) JSON(code int, obj interface{}) {
 	c.Render(code, render.JSON{Data: obj})
 }
 
+// AsciiJSON serializes the given struct as JSON into the response body with unicode to ASCII string.
+// It also sets the Content-Type as "application/json".
+func (c *Context) AsciiJSON(code int, obj interface{}) {
+	c.Render(code, render.AsciiJSON{Data: obj})
+}
+
 // XML serializes the given struct as XML into the response body.
 // It also sets the Content-Type as "application/xml".
 func (c *Context) XML(code int, obj interface{}) {
diff --git a/context_test.go b/context_test.go
index 12e02fa0..6f37682e 100644
--- a/context_test.go
+++ b/context_test.go
@@ -686,6 +686,17 @@ func TestContextRenderNoContentSecureJSON(t *testing.T) {
 	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
 }
 
+func TestContextRenderNoContentAsciiJSON(t *testing.T) {
+	w := httptest.NewRecorder()
+	c, _ := CreateTestContext(w)
+
+	c.AsciiJSON(http.StatusNoContent, []string{"lang", "Go语言"})
+
+	assert.Equal(t, http.StatusNoContent, w.Code)
+	assert.Empty(t, w.Body.String())
+	assert.Equal(t, "application/json", w.HeaderMap.Get("Content-Type"))
+}
+
 // Tests that the response executes the templates
 // and responds with Content-Type set to text/html
 func TestContextRenderHTML(t *testing.T) {
diff --git a/render/json.go b/render/json.go
index 3a2e8b2f..6e5089a0 100755
--- a/render/json.go
+++ b/render/json.go
@@ -6,6 +6,7 @@ package render
 
 import (
 	"bytes"
+	"fmt"
 	"html/template"
 	"net/http"
 
@@ -30,10 +31,15 @@ type JsonpJSON struct {
 	Data     interface{}
 }
 
+type AsciiJSON struct {
+	Data interface{}
+}
+
 type SecureJSONPrefix string
 
 var jsonContentType = []string{"application/json; charset=utf-8"}
 var jsonpContentType = []string{"application/javascript; charset=utf-8"}
+var jsonAsciiContentType = []string{"application/json"}
 
 func (r JSON) Render(w http.ResponseWriter) (err error) {
 	if err = WriteJSON(w, r.Data); err != nil {
@@ -112,3 +118,29 @@ func (r JsonpJSON) Render(w http.ResponseWriter) (err error) {
 func (r JsonpJSON) WriteContentType(w http.ResponseWriter) {
 	writeContentType(w, jsonpContentType)
 }
+
+func (r AsciiJSON) Render(w http.ResponseWriter) (err error) {
+	r.WriteContentType(w)
+	ret, err := json.Marshal(r.Data)
+	if err != nil {
+		return err
+	}
+
+	var buffer bytes.Buffer
+	for _, r := range string(ret) {
+		cvt := ""
+		if r < 128 {
+			cvt = string(r)
+		} else {
+			cvt = fmt.Sprintf("\\u%04x", int64(r))
+		}
+		buffer.WriteString(cvt)
+	}
+
+	w.Write(buffer.Bytes())
+	return nil
+}
+
+func (r AsciiJSON) WriteContentType(w http.ResponseWriter) {
+	writeContentType(w, jsonAsciiContentType)
+}
diff --git a/render/render_test.go b/render/render_test.go
index 40ec806e..2f728441 100755
--- a/render/render_test.go
+++ b/render/render_test.go
@@ -167,6 +167,35 @@ func TestRenderJsonpJSONFail(t *testing.T) {
 	assert.Error(t, err)
 }
 
+func TestRenderAsciiJSON(t *testing.T) {
+	w1 := httptest.NewRecorder()
+	data1 := map[string]interface{}{
+		"lang": "GO语言",
+		"tag":  "<br>",
+	}
+
+	err := (AsciiJSON{data1}).Render(w1)
+
+	assert.NoError(t, err)
+	assert.Equal(t, "{\"lang\":\"GO\\u8bed\\u8a00\",\"tag\":\"\\u003cbr\\u003e\"}", w1.Body.String())
+	assert.Equal(t, "application/json", w1.Header().Get("Content-Type"))
+
+	w2 := httptest.NewRecorder()
+	data2 := float64(3.1415926)
+
+	err = (AsciiJSON{data2}).Render(w2)
+	assert.NoError(t, err)
+	assert.Equal(t, "3.1415926", w2.Body.String())
+}
+
+func TestRenderAsciiJSONFail(t *testing.T) {
+	w := httptest.NewRecorder()
+	data := make(chan int)
+
+	// json: unsupported type: chan int
+	assert.Error(t, (AsciiJSON{data}).Render(w))
+}
+
 type xmlmap map[string]interface{}
 
 // Allows type H to be used with xml.Marshal

From 220e8d34538f5dfdcc299dda79bf83cf52e633f6 Mon Sep 17 00:00:00 2001
From: solos <lxl1217@gmail.com>
Date: Sat, 21 Jul 2018 00:52:55 +0800
Subject: [PATCH 15/16] return json if jsonp has not callback (#1438)

return json if jsonp has not callback
---
 context.go      |  7 ++++++-
 context_test.go | 14 ++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/context.go b/context.go
index d0b4e87f..720c4251 100644
--- a/context.go
+++ b/context.go
@@ -695,7 +695,12 @@ func (c *Context) SecureJSON(code int, obj interface{}) {
 // It add padding to response body to request data from a server residing in a different domain than the client.
 // It also sets the Content-Type as "application/javascript".
 func (c *Context) JSONP(code int, obj interface{}) {
-	c.Render(code, render.JsonpJSON{Callback: c.DefaultQuery("callback", ""), Data: obj})
+	callback := c.DefaultQuery("callback", "")
+	if callback == "" {
+		c.Render(code, render.JSON{Data: obj})
+	} else {
+		c.Render(code, render.JsonpJSON{Callback: callback, Data: obj})
+	}
 }
 
 // JSON serializes the given struct as JSON into the response body.
diff --git a/context_test.go b/context_test.go
index 6f37682e..e29569fd 100644
--- a/context_test.go
+++ b/context_test.go
@@ -596,6 +596,20 @@ func TestContextRenderJSONP(t *testing.T) {
 	assert.Equal(t, "application/javascript; charset=utf-8", w.HeaderMap.Get("Content-Type"))
 }
 
+// Tests that the response is serialized as JSONP
+// and Content-Type is set to application/json
+func TestContextRenderJSONPWithoutCallback(t *testing.T) {
+	w := httptest.NewRecorder()
+	c, _ := CreateTestContext(w)
+	c.Request, _ = http.NewRequest("GET", "http://example.com", nil)
+
+	c.JSONP(201, H{"foo": "bar"})
+
+	assert.Equal(t, 201, w.Code)
+	assert.Equal(t, "{\"foo\":\"bar\"}", w.Body.String())
+	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+}
+
 // Tests that no JSON is rendered if code is 204
 func TestContextRenderNoContentJSON(t *testing.T) {
 	w := httptest.NewRecorder()

From 631cfbd1ef2374f5a01f5d17ed8c8f08779ad6fe Mon Sep 17 00:00:00 2001
From: Dmitry Dorogin <dmirogin@ya.ru>
Date: Sun, 5 Aug 2018 08:29:26 +0300
Subject: [PATCH 16/16] Simplify context error (#1431)

Hello!

Looking through context package and found a little bit complicated switch block. And tried to make it easier.

Thanks!
---
 context.go   | 9 ++++-----
 ginS/gins.go | 2 +-
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/context.go b/context.go
index 720c4251..779484b1 100644
--- a/context.go
+++ b/context.go
@@ -159,16 +159,15 @@ func (c *Context) Error(err error) *Error {
 	if err == nil {
 		panic("err is nil")
 	}
-	var parsedError *Error
-	switch err.(type) {
-	case *Error:
-		parsedError = err.(*Error)
-	default:
+
+	parsedError, ok := err.(*Error)
+	if !ok {
 		parsedError = &Error{
 			Err:  err,
 			Type: ErrorTypePrivate,
 		}
 	}
+
 	c.Errors = append(c.Errors, parsedError)
 	return parsedError
 }
diff --git a/ginS/gins.go b/ginS/gins.go
index ee00b381..a7686f23 100644
--- a/ginS/gins.go
+++ b/ginS/gins.go
@@ -128,7 +128,7 @@ func Run(addr ...string) (err error) {
 // RunTLS : The router is attached to a http.Server and starts listening and serving HTTPS requests.
 // It is a shortcut for http.ListenAndServeTLS(addr, certFile, keyFile, router)
 // Note: this method will block the calling goroutine undefinitelly unless an error happens.
-func RunTLS(addr string, certFile string, keyFile string) (err error) {
+func RunTLS(addr, certFile, keyFile string) (err error) {
 	return engine().RunTLS(addr, certFile, keyFile)
 }