Node.js Http2ServerResponse.addTrailers() 方法
Http2ServerResponse.addTrailers()是 http2 模块中 Http2ServerRequest 类的内置应用程序编程接口,用于将 HTTP 尾随标头添加到响应中。
句法:
const response.addTrailers(headers)
参数:此方法接受标头字段名称作为参数。
返回值:此方法返回请求 URL字符串。
如何生成私钥和公共证书?
1. 文件名:私钥
打开记事本并复制粘贴以下密钥并将文件保存为private-key.pem
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
2. 文件名:公共证书
打开记事本并复制粘贴以下密钥并将文件另存为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-----
示例 1:文件名: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");
})
});
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");
})
});
使用以下命令运行index.js文件:
node index.js
输出:
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
示例 2:文件名: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");
})
});
使用以下命令运行index.js文件:
node index.js
输出:
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
参考: https://nodejs.org/dist/latest-v12.x/docs/api/http2.html#http2_response_addtrailers_headers