stackoverflow/fetch-half-duplex at main · javascript-2020/stackoverflow · GitHub

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

        var http2         = require('http2');

        var server        = http2.createSecureServer({key,cert})
        server.listen(8000)


        server.on('stream',(stream,headers)=>{

              var path    = headers[':path'];
                                                                                console.log(path);
              if(path==='/test'){
                    test(stream,headers);
                    return;
              }

              stream.respond({
                    'content-type'    : 'text/html; charset=utf-8',
                    ':status'         : 200
              })

              stream.write(html);
              stream.end();

        });


        function test(stream,headers){

              stream.respond({
                    'content-type'    : 'text/html; charset=utf-8',
                    ':status'         : 200
              })

              stream.on('data',data=>{
                                                                                console.log('test: ',data.toString());
                    stream.write(data);

              });

              stream.on('end',()=>{
                                                                                console.log('test: request complete');
                    stream.write('complete');
                    stream.end();

              });

        }//test


        var html    = `

        <script type=module>

              const stream    = new ReadableStream({start}).pipeThrough(new TextEncoderStream());

              function start(c){

                  let count     = 0;
                  const timer   = setInterval(send,1000);

                  function send(){
                                                                                console.log('sent');
                        c.enqueue('Hello');

                        if(count==5){
                              clearInterval(timer);
                              c.close();
                        }
                        count++;

                  }//send

              }//start


              const resp      = await fetch('test',{method:'post',body:stream,duplex:'half'});
              const reader    = resp.body.pipeThrough(new TextDecoderStream()).getReader();
                                                                                console.log('response stream aquired');
              while(true){

                    const {value,done}    = await reader.read();
                    if(done)break;
                                                                                console.log('fetch',value);

              }//while

              console.log('done');


        </script>

        `;