-
Notifications
You must be signed in to change notification settings - Fork 21
/
server.go
217 lines (203 loc) · 5.43 KB
/
server.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
package assetserve
import (
"context"
"crypto/tls"
"embed"
"errors"
"fmt"
"io/ioutil"
"net"
"net/http"
"os"
"os/signal"
"strings"
"time"
)
var contentType = map[string]string{}
//用于保证链接的安全的请求头(header)key名称
var AssetsServerHeaderKeyName = "ASSETS_SERVER_KEY"
//用于保证链接的安全的key值
//
//这里简单的在请求所有资源时增加请求头的判断
//
//不为空时生效
var AssetsServerHeaderKeyValue string
type assetsHttpServer struct {
LocalAssets string //本地静态资源目录 示例: /app/assets/ http://127.0.0.1:8888/demo/demo.html -> /app/assets/demo/demo.html
AssetsFSName string //静态资源内置FS目录名 默认值: resources
Assets *embed.FS //静态资源内置FS目录对象
IP string //默认值: 127.0.0.1
PORT int //默认值: 80
SSL *SSL //设置后启动https
}
//证书配置,根据 Assets 或 LocalAssets 寻找证书文件位置
type SSL struct {
SSLCert string
SSLKey string
}
func init() {
var types = strings.Split(mimeTypes, "\n")
for _, mime := range types {
mime = strings.TrimSpace(mime)
var m = strings.Split(mime, "=")
if len(m) == 2 {
contentType["."+m[0]] = m[1]
}
}
}
func NewAssetsHttpServer() *assetsHttpServer {
return &assetsHttpServer{
AssetsFSName: "resources",
IP: "127.0.0.1",
PORT: 80,
}
}
func (m *assetsHttpServer) serveTLS(addr string, handler http.Handler) {
server := &http.Server{Addr: addr, Handler: handler}
if addr == "" {
addr = ":https"
}
ln, err := net.Listen("tcp", addr)
if err != nil {
fmt.Println("serverTLS Listen failed error:", err)
return
}
defer ln.Close()
var config = &tls.Config{}
config.NextProtos = append(config.NextProtos, "http/1.1")
configHasCert := len(config.Certificates) > 0 || config.GetCertificate != nil
if !configHasCert || m.SSL.SSLCert != "" || m.SSL.SSLKey != "" {
var loadX509KeyPair = func(certFile, keyFile string) (tls.Certificate, error) {
var (
certPEMBlock, keyPEMBlock []byte
err error
)
if m.Assets != nil {
certPEMBlock, err = m.Assets.ReadFile(m.AssetsFSName + certFile)
if err != nil {
return tls.Certificate{}, err
}
keyPEMBlock, err = m.Assets.ReadFile(m.AssetsFSName + keyFile)
if err != nil {
return tls.Certificate{}, err
}
} else if m.LocalAssets != "" {
certPEMBlock, err = os.ReadFile(m.LocalAssets + certFile)
if err != nil {
return tls.Certificate{}, err
}
keyPEMBlock, err = os.ReadFile(m.LocalAssets + keyFile)
if err != nil {
return tls.Certificate{}, err
}
} else {
if err != nil {
return tls.Certificate{}, errors.New("resource directory is not configured")
}
}
return tls.X509KeyPair(certPEMBlock, keyPEMBlock)
}
config.Certificates = make([]tls.Certificate, 1)
config.Certificates[0], err = loadX509KeyPair(m.SSL.SSLCert, m.SSL.SSLKey)
if err != nil {
fmt.Println("serverTLS loadX509KeyPair failed error:", err)
return
}
}
tlsListener := tls.NewListener(ln, config)
go func() {
if err = server.Serve(tlsListener); err != nil {
fmt.Println("serverTLS start failed error:", err)
}
}()
m.graceShutdown(server)
}
func (m *assetsHttpServer) serve(addr string, handler http.Handler) {
server := &http.Server{Addr: addr, Handler: handler}
go func() {
if err := server.ListenAndServe(); err != nil {
fmt.Println("server start failed error:", err)
}
}()
m.graceShutdown(server)
}
func (m *assetsHttpServer) graceShutdown(server *http.Server) {
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
<-c
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
if err := server.Shutdown(ctx); err != nil {
fmt.Println("http server grace shutdown failed error:", err)
}
}
//启动内置Http Server
//
//需要使用goroutine启动 [go x.StartHttpServer()]
func (m *assetsHttpServer) StartHttpServer() {
if m.LocalAssets != "" {
m.LocalAssets = strings.ReplaceAll(m.LocalAssets, "\\", "/")
if strings.LastIndex(m.LocalAssets, "/") != len(m.LocalAssets)-1 {
m.LocalAssets = m.LocalAssets + "/"
}
}
addr := fmt.Sprintf("%s:%d", m.IP, m.PORT)
mux := http.NewServeMux()
mux.Handle("/", m)
if m.SSL != nil {
m.serveTLS(addr, mux)
} else {
m.serve(addr, mux)
}
}
func (m *assetsHttpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if AssetsServerHeaderKeyValue != "" {
if AssetsServerHeaderKeyValue != r.Header.Get(AssetsServerHeaderKeyName) {
return
}
}
defer func() {
if err := recover(); err != nil {
}
}()
var path = r.URL.Path
if path == "/" {
path = "/index.html"
} else if strings.LastIndex(path, "/") == len(path)-1 {
path = path + "index.html"
}
var (
byt []byte
err error
)
if m.Assets != nil {
byt, err = m.Assets.ReadFile(m.AssetsFSName + path)
} else if m.LocalAssets != "" {
path = fmt.Sprintf("%s%s", m.LocalAssets, path)
byt, err = ioutil.ReadFile(path)
} else {
w.WriteHeader(404)
_, _ = w.Write([]byte("resource directory is not configured"))
return
}
if err != nil {
w.WriteHeader(404)
_, _ = w.Write([]byte("file not found: " + path))
} else {
et := extType(path)
if et != "" {
if ct, ok := contentType[et]; ok {
w.Header().Set("Content-Type", ct)
}
}
w.WriteHeader(200)
_, _ = w.Write(byt)
}
}
func extType(path string) string {
idx := strings.LastIndex(path, ".")
if idx != -1 {
return path[idx:]
}
return ""
}