我试图弄清楚如何使用NodeJS发送HTTP / 2 POST请求。到目前为止,我离文档中的示例还很远:
const http2 = require('http2');
const fs = require('fs');
const client = http2.connect('https://localhost:8443', {
ca: fs.readFileSync('localhost-cert.pem')
});
client.on('error', (err) => console.error(err));
client.on('socketError', (err) => console.error(err));
const req = client.request({ ':path': '/' });
req.on('response', (headers, flags) => {
for (const name in headers) {
console.log(`${name}: ${headers[name]}`);
}
});
req.setEncoding('utf8');
let data = '';
req.on('data', (chunk) => { data += chunk; });
req.on('end', () => {
console.log(`\n${data}`);
client.close();
});
req.end();
但是我还不清楚如何实际设置数据以POST方式发送。
将少量信息汇总到处之后,我终于设法解决了这个问题。这是一个模板示例。密钥在req.write()中。老实说,我找不到任何有关如何包括身体的直接答案。几乎每个例子都没有身体!希望这对其他人有帮助。注意:这在Node-red中,因此在global.get语句中,但也可以通过将它们更改为require('module')来工作:
const fs = global.get('fs');
const http2 = global.get('http2');
fs.readFile('turn-off-the-desklight.raw', function(err, content){
if(err){
node.send(err);
}
var metadata = JSON.stringify(
{
"context": [
{
"header": {
"namespace": "SpeechRecognizer",
"name": "RecognizerState"
},
"payload": {
}
},
{
"header": {
"namespace": "Speaker",
"name": "VolumeState"
},
"payload": {
"volume": 10,
"muted": false
}
},
{
"header": {
"namespace": "Alerts",
"name": "AlertsState"
},
"payload": {
"allAlerts": [],
"activeAlerts": []
}
},
{
"header": {
"namespace": "SpeechSynthesizer",
"name": "SpeechState"
},
"payload": {
"token": "",
"offsetInMilliseconds": 0,
"playerActivity": "FINISHED"
}
},
{
"header": {
"namespace": "AudioPlayer",
"name": "PlaybackState"
},
"payload": {
"token": "",
"offsetInMilliseconds": 0,
"playerActivity": "IDLE"
}
}
],
"event": {
"header": {
"namespace": "SpeechRecognizer",
"name": "Recognize",
"messageId": "1eff3c5e-02e3-4dd3-9ca0-7c38937f005f",
"dialogRequestId": "a905c2bb-1bbd-45cf-9f85-6563d2546492"
},
"payload": {
"profile": "FAR_FIELD",
"format": "AUDIO_L16_RATE_16000_CHANNELS_1"
}
}
});
var data = "--this-is-my-boundary-for-alexa\r\n";
data += 'Content-Disposition: form-data; name="metadata"\r\n';
data +='Content-Type: application/json; charset=UTF-8\r\n\r\n';
data += metadata;
data += "\r\n";
data += "--this-is-my-boundary-for-alexa\r\n";
data += "Content-Disposition: form-data; name=\"audio\"\r\n";
data += "Content-Type:application/octet-stream\r\n\r\n";
var payload = Buffer.concat([
Buffer.from(data, "utf8"),
new Buffer(content, 'binary'),
Buffer.from("\r\n--this-is-my-boundary-for-alexa\r\n", "utf8"),
]);
const client = global.get('alexaClient');
client.on('error', (err) => node.send({payload:err}));
client.on('socketError', (err) => node.send({payload:err}));
var request = {
':method' : 'POST',
':scheme' : 'https',
':path' : '/v20160207/events',
'authorization' : 'Bearer <valid token>',
'content-type' : 'multipart/form-data; boundary=this-is-my-boundary-for-alexa'
};
var req = client.request(request);
req.on('response', (headers, flags) => {
for (const name in headers) {
if(name === ':status') {
node.send({payload:`${name}: ${headers[name]}`});
}
}
});
req.on('error', function(err) {
node.send(err);
});
req.setEncoding('utf8');
let outdata = '';
req.on('data', (chunk) => { outdata += chunk; });
req.on('end', () => {
node.send({payload:outdata});
});
req.write(payload);
req.end();
});
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我来说两句