Http2ServerResponse.addTrailers () es una interfaz de programación de aplicaciones incorporada de la clase Http2ServerRequest dentro del módulo http2 que se usa para agregar los encabezados finales HTTP a la respuesta.
Sintaxis:
const response.addTrailers(headers)
Parámetros: este método acepta el nombre del campo de encabezado como parámetro.
Valor de retorno : este método devuelve la string de URL de solicitud.
¿Cómo generar una clave privada y un certificado público?
1. Nombre de archivo: clave privada
Abra el bloc de notas y copie y pegue la siguiente clave y guarde el archivo como private-key.pem
-----BEGIN RSA PRIVATE KEY----- MIICXQIBAAKBgQC38R9wXcUbhOd44FavgmE5R3K4JeYOHLnI7dUq1B8/Gv7l3SOg JKef/m9gM1KvUx951mapXGtcWgwB08J3vUE2YOZ4tWJArrVZES0BI/RmFAyhQFP5 HcWl3LSM9LRihP98F33oIkKaCxA5LxOrkgpV4HrUzIKTABDYah7RPex1WQIDAQAB AoGBAIXR71xxa9gUfc5L7+TqBs+EMmrUb6Vusp8CoGXzQvRHMJCMrMFySV0131Nu o0YYRDsAh1nJefYLMNcXd1BjqI+qY8IeRsxaY+9CB2KKGVVDO2uLdurdC2ZdlWXT Vwr3dDoyR0trnXJMmH2ijTeO6bush8HuXxvxJBjvEllM5QYxAkEA3jwny9JP+RFu 0rkqPBe/wi5pXpPl7PUtdNAGrh6S5958wUoR4f9bvwmTBv1nQzExKWu4EIp+7vjJ fBeRZhnBvQJBANPjjge8418PS9zAFyKlITq6cxmM4gOWeveQZwXVNvav0NH+OKdQ sZnnDiG26JWmnD/B8Audu97LcxjxcWI8Jc0CQEYA5PhLU229lA9EzI0JXhoozIBC TlcKFDuLm88VSmlHqDyqvF9YNOpEdc/p2rFLuZS2ndB4D+vu6mjwc5iZ3HECQCxy GBHRclQ3Ti9w76lpv+2kvI4IekRMZWDWnnWfwta+DGxwCgw2pfpleBZkWqdBepb5 JFQbcxQJ0wvRYXo8qaUCQQCgTvWswBj6OTP7LTvBlU1teAN2Lnrk/N5AYHZIXW6m nUG9lYvH7DztWDTioXMrruPF7bdXfZOVJD8t0I4OUzvC -----END RSA PRIVATE KEY-----
2. Nombre de archivo: Certificado público
Abra el bloc de notas y copie y pegue la siguiente clave y guarde el archivo como public-cert.pem
-----BEGIN CERTIFICATE----- MIICfzCCAegCCQDxxeXw914Y2DANBgkqhkiG9w0BAQsFADCBgzELMAkGA1UEBhMC SU4xEzARBgNVBAgMCldlc3RiZW5nYWwxEDAOBgNVBAcMB0tvbGthdGExFDASBgNV BAoMC1BhbmNvLCBJbmMuMRUwEwYDVQQDDAxSb2hpdCBQcmFzYWQxIDAeBgkqhkiG 9w0BCQEWEXJvZm9mb2ZAZ21haWwuY29tMB4XDTIwMDkwOTA1NTExN1oXDTIwMTAw OTA1NTExN1owgYMxCzAJBgNVBAYTAklOMRMwEQYDVQQIDApXZXN0YmVuZ2FsMRAw DgYDVQQHDAdLb2xrYXRhMRQwEgYDVQQKDAtQYW5jbywgSW5jLjEVMBMGA1UEAwwM Um9oaXQgUHJhc2FkMSAwHgYJKoZIhvcNAQkBFhFyb2ZvZm9mQGdtYWlsLmNvbTCB nzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAt/EfcF3FG4TneOBWr4JhOUdyuCXm Dhy5yO3VKtQfPxr+5d0joCSnn/5vYDNSr1MfedZmqVxrXFoMAdPCd71BNmDmeLVi QK61WREtASP0ZhQMoUBT+R3Fpdy0jPS0YoT/fBd96CJCmgsQOS8Tq5IKVeB61MyC kwAQ2Goe0T3sdVkCAwEAATANBgkqhkiG9w0BAQsFAAOBgQATe6ixdAjoV7BSHgRX bXM2+IZLq8kq3s7ck0EZrRVhsivutcaZwDXRCCinB+OlPedbzXwNZGvVX0nwPYHG BfiXwdiuZeVJ88ni6Fm6RhoPtu2QF1UExfBvSXuMBgR+evp+e3QadNpGx6Ppl1aC hWF6W2H9+MAlU7yvtmCQQuZmfQ== -----END CERTIFICATE-----
Ejemplo 1: Nombre de archivo: index.js
Javascript
// Node.js program to demonstrate the // Http2ServerResponse.addTrailers() method const http2 = require('http2'); const fs = require('fs'); // Private key and public certificate for access const options = { key: fs.readFileSync('private-key.pem'), cert: fs.readFileSync('public-cert.pem'), }; // Request and response handler const http2Handlers = (request, response) => { response.addTrailers({'Content-MD5': '7895bf4b8828b55ceaf47747b4bca667'}); console.log(response) }; // Creating and initializing server // by using http2.createServer() method const server = http2.createServer( options, http2Handlers); server.on('stream', (stream, requestheader) => { stream.respond({ ':status': 200, 'content-type': 'text/plain' }); stream.write('hello '); // Getting all information of this http2stream // object by using state method const status = stream.state; stream.end("priority weight : " + status.weight); // Stopping the server // by using the close() method server.close(() => { console.log("server destroyed"); }) }); server.listen(8000); // Creating and initializing client // by using tls.connect() method const client = http2.connect( 'http://localhost:8000'); const req = client.request({ ':method': 'GET', ':path': '/name' }); req.on('response', (responsesocket) => { console.log("status : " + responsesocket[":status"]); }); req.on('data', (data) => { console.log('Received: %s ', data.toString().replace(/(\n)/gm,"")); }); req.on('end', () => { client.close(() => { console.log("client destroyed"); }) });
Ejecute el archivo index.js con el siguiente comando:
node index.js
Producción:
Http2ServerResponse { _events: [Object: null prototype] {}, _eventsCount: 0, ... ... ... corkedRequestsFree: { next: null, entry: null, finish: [Function: bound onCorkedFinish] } } } } status : 200 Received: hello Received: priority weight : 16 client destroyed server destroyed
Ejemplo 2: Nombre de archivo: index.js
Javascript
// Node.js program to demonstrate the // Http2ServerResponse.addTrailers() method const http2 = require('http2'); const fs = require('fs'); // Private key and public certificate for access const options = { key: fs.readFileSync('private-key.pem'), cert: fs.readFileSync('public-cert.pem'), }; // Request and response handler const http2Handlers = (request, response) => { response.addTrailers({ 'Cookie-Setup': ['Alfa=Beta', 'Beta=Romeo'] }); console.log(response) }; // Creating and initializing server // by using http2.createServer() method const server = http2.createServer( options, http2Handlers); server.on('stream', (stream, requestheader) => { stream.respond({ ':status': 200, 'content-type': 'text/plain' }); stream.write('hello '); // Getting all information of this http2stream // object by using state method const status = stream.state; stream.end("priority weight : " + status.weight); // Stopping the server // by using the close() method server.close(() => { console.log("server destroyed"); }) }); server.listen(8000); // Creating and initializing client // by using tls.connect() method const client = http2.connect( 'http://localhost:8000'); const req = client.request({ ':method': 'GET', ':path': '/name' }); req.on('response', (responsesocket) => { console.log("status : " + responsesocket[":status"]); }); req.on('data', (data) => { console.log('Received: %s ', data.toString().replace(/(\n)/gm,"")); }); req.on('end', () => { client.close(() => { console.log("client destroyed"); }) });
Ejecute el archivo index.js con el siguiente comando:
node index.js
Producción:
Http2ServerResponse { _events: [Object: null prototype] {}, _eventsCount: 0, _maxListeners: undefined, ... ... ... corkedRequestsFree: { next: null, entry: null, finish: [Function: bound onCorkedFinish] } } } } status : 200 Received: hello Received: priority weight : 16 client destroyed server destroyed
Referencia: https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_response_addtrailers_headers
Publicación traducida automáticamente
Artículo escrito por RohitPrasad3 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA