blob: 931945a8850d20f15600c32496430b8a5d5a9ada (
plain)
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
|
package gzip
import (
"bufio"
"compress/gzip"
"errors"
"net"
"net/http"
"github.com/gin-gonic/gin"
)
const (
BestCompression = gzip.BestCompression
BestSpeed = gzip.BestSpeed
DefaultCompression = gzip.DefaultCompression
NoCompression = gzip.NoCompression
HuffmanOnly = gzip.HuffmanOnly
)
func Gzip(level int, options ...Option) gin.HandlerFunc {
return newGzipHandler(level, options...).Handle
}
type gzipWriter struct {
gin.ResponseWriter
writer *gzip.Writer
}
func (g *gzipWriter) WriteString(s string) (int, error) {
g.Header().Del("Content-Length")
return g.writer.Write([]byte(s))
}
func (g *gzipWriter) Write(data []byte) (int, error) {
g.Header().Del("Content-Length")
return g.writer.Write(data)
}
func (g *gzipWriter) Flush() {
_ = g.writer.Flush()
g.ResponseWriter.Flush()
}
// Fix: https://github.com/mholt/caddy/issues/38
func (g *gzipWriter) WriteHeader(code int) {
g.Header().Del("Content-Length")
g.ResponseWriter.WriteHeader(code)
}
// Ensure gzipWriter implements the http.Hijacker interface.
// This will cause a compile-time error if gzipWriter does not implement all methods of the http.Hijacker interface.
var _ http.Hijacker = (*gzipWriter)(nil)
// Hijack allows the caller to take over the connection from the HTTP server.
// After a call to Hijack, the HTTP server library will not do anything else with the connection.
// It becomes the caller's responsibility to manage and close the connection.
//
// It returns the underlying net.Conn, a buffered reader/writer for the connection, and an error
// if the ResponseWriter does not support the Hijacker interface.
func (g *gzipWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
hijacker, ok := g.ResponseWriter.(http.Hijacker)
if !ok {
return nil, nil, errors.New("the ResponseWriter doesn't support the Hijacker interface")
}
return hijacker.Hijack()
}
|
