Mixing
Custom response with http-proxy-middleware package
In our project we're using the "http-proxy-middleware"(https://www.npmjs.com/package/http-proxy-middleware) npm package for proxy.
There is the "onProxyRes" function to subscribe to http-proxy's event.
And there is an example of that function:
function onProxyRes(proxyRes, req, res) {
proxyRes.headers['x-added'] = 'foobar' // add new header to response
delete proxyRes.headers['x-removed'] // remove header from response
}
I'm just interesting is it possible somehow based on proxyRes write changed response in res object and do not copy data directly from proxyRes object?
Just example:
proxyRes(readable stream contains the following data: {"url": "http://domain/test"}, I'd like to modify that response and have res with data like that: {{"url": "http://changedDomain/test"}} and do not copy data from proxyRes directly
javascript node.js
asked Jan 2 at 11:16
Eugenio REugenio R
133
add a comment |
In our project we're using the "http-proxy-middleware"(https://www.npmjs.com/package/http-proxy-middleware) npm package for proxy.
There is the "onProxyRes" function to subscribe to http-proxy's event.
And there is an example of that function:
function onProxyRes(proxyRes, req, res) {
proxyRes.headers['x-added'] = 'foobar' // add new header to response
delete proxyRes.headers['x-removed'] // remove header from response
}
I'm just interesting is it possible somehow based on proxyRes write changed response in res object and do not copy data directly from proxyRes object?
Just example:
proxyRes(readable stream contains the following data: {"url": "http://domain/test"}, I'd like to modify that response and have res with data like that: {{"url": "http://changedDomain/test"}} and do not copy data from proxyRes directly
javascript node.js
asked Jan 2 at 11:16
Eugenio REugenio R
133
add a comment |
In our project we're using the "http-proxy-middleware"(https://www.npmjs.com/package/http-proxy-middleware) npm package for proxy.
There is the "onProxyRes" function to subscribe to http-proxy's event.
And there is an example of that function:
function onProxyRes(proxyRes, req, res) {
proxyRes.headers['x-added'] = 'foobar' // add new header to response
delete proxyRes.headers['x-removed'] // remove header from response
}
I'm just interesting is it possible somehow based on proxyRes write changed response in res object and do not copy data directly from proxyRes object?
Just example:
proxyRes(readable stream contains the following data: {"url": "http://domain/test"}, I'd like to modify that response and have res with data like that: {{"url": "http://changedDomain/test"}} and do not copy data from proxyRes directly
javascript node.js
asked Jan 2 at 11:16
Eugenio REugenio R
133
In our project we're using the "http-proxy-middleware"(https://www.npmjs.com/package/http-proxy-middleware) npm package for proxy.
There is the "onProxyRes" function to subscribe to http-proxy's event.
And there is an example of that function:
function onProxyRes(proxyRes, req, res) {
proxyRes.headers['x-added'] = 'foobar' // add new header to response
delete proxyRes.headers['x-removed'] // remove header from response
}
I'm just interesting is it possible somehow based on proxyRes write changed response in res object and do not copy data directly from proxyRes object?
Just example:
proxyRes(readable stream contains the following data: {"url": "http://domain/test"}, I'd like to modify that response and have res with data like that: {{"url": "http://changedDomain/test"}} and do not copy data from proxyRes directly
javascript node.js
javascript node.js
asked Jan 2 at 11:16
Eugenio REugenio R
133
asked Jan 2 at 11:16
Eugenio REugenio R
133
edited Jan 2 at 11:21
Eugenio R
asked Jan 2 at 11:16
Eugenio REugenio R
133
asked Jan 2 at 11:16
Eugenio REugenio R
133
asked Jan 2 at 11:16
Eugenio REugenio R
133
133
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
I don't think it's necessary to copy data to res as proxyRes already has changedDomain.
Here is the set up I implemented:
const express = require('express');
const httpProxy = require('http-proxy-middleware');
const app = express();
app.use('/api', httpProxy({ target : 'sometarget.com', changeOrigin : true, onProxyRes})
function onProxyRes (proxyResponse, request, response) {
console.log('proxyResponse', proxyResponse.headers);
console.log('response', response.headers);
}
// Results
/*
proxyResponse { date: 'Wed, 02 Jan 2019 12:06:40 GMT',
server: 'Apache',
location: 'http://sometarget.com/api',
'cache-control': 'max-age=30',
expires: 'Wed, 02 Jan 2019 12:07:10 GMT',
'content-length': '231',
connection: 'close',
'content-type': 'text/html; charset=iso-8859-1' }
response undefined
*/
Everything you'll need will be in proxyRes unless you have a specific use for response...
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
add a comment |
Maybe it looks ugly little bit, but I'm able to manage that with the following code:
function onProxyRes(proxyResponse, request, serverResponse) {
var body = "";
var _write = serverResponse.write;
proxyResponse.on('data', function (chunk) {
body += chunk;
});
serverResponse.write = function (data) {
try{
var jsonData = JSON.parse(data);
// here we can modify jsonData
var buf = Buffer.from(JSON.stringify(jsonData), 'utf-8');
_write.call(serverResponse,buf);
} catch (err) {
console.log(err);
}
}
}
answered Jan 3 at 7:22
Eugenio REugenio R
133
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I don't think it's necessary to copy data to res as proxyRes already has changedDomain.
Here is the set up I implemented:
const express = require('express');
const httpProxy = require('http-proxy-middleware');
const app = express();
app.use('/api', httpProxy({ target : 'sometarget.com', changeOrigin : true, onProxyRes})
function onProxyRes (proxyResponse, request, response) {
console.log('proxyResponse', proxyResponse.headers);
console.log('response', response.headers);
}
// Results
/*
proxyResponse { date: 'Wed, 02 Jan 2019 12:06:40 GMT',
server: 'Apache',
location: 'http://sometarget.com/api',
'cache-control': 'max-age=30',
expires: 'Wed, 02 Jan 2019 12:07:10 GMT',
'content-length': '231',
connection: 'close',
'content-type': 'text/html; charset=iso-8859-1' }
response undefined
*/
Everything you'll need will be in proxyRes unless you have a specific use for response...
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
add a comment |
I don't think it's necessary to copy data to res as proxyRes already has changedDomain.
Here is the set up I implemented:
const express = require('express');
const httpProxy = require('http-proxy-middleware');
const app = express();
app.use('/api', httpProxy({ target : 'sometarget.com', changeOrigin : true, onProxyRes})
function onProxyRes (proxyResponse, request, response) {
console.log('proxyResponse', proxyResponse.headers);
console.log('response', response.headers);
}
// Results
/*
proxyResponse { date: 'Wed, 02 Jan 2019 12:06:40 GMT',
server: 'Apache',
location: 'http://sometarget.com/api',
'cache-control': 'max-age=30',
expires: 'Wed, 02 Jan 2019 12:07:10 GMT',
'content-length': '231',
connection: 'close',
'content-type': 'text/html; charset=iso-8859-1' }
response undefined
*/
Everything you'll need will be in proxyRes unless you have a specific use for response...
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
add a comment |
I don't think it's necessary to copy data to res as proxyRes already has changedDomain.
Here is the set up I implemented:
const express = require('express');
const httpProxy = require('http-proxy-middleware');
const app = express();
app.use('/api', httpProxy({ target : 'sometarget.com', changeOrigin : true, onProxyRes})
function onProxyRes (proxyResponse, request, response) {
console.log('proxyResponse', proxyResponse.headers);
console.log('response', response.headers);
}
// Results
/*
proxyResponse { date: 'Wed, 02 Jan 2019 12:06:40 GMT',
server: 'Apache',
location: 'http://sometarget.com/api',
'cache-control': 'max-age=30',
expires: 'Wed, 02 Jan 2019 12:07:10 GMT',
'content-length': '231',
connection: 'close',
'content-type': 'text/html; charset=iso-8859-1' }
response undefined
*/
Everything you'll need will be in proxyRes unless you have a specific use for response...
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
I don't think it's necessary to copy data to res as proxyRes already has changedDomain.
Here is the set up I implemented:
const express = require('express');
const httpProxy = require('http-proxy-middleware');
const app = express();
app.use('/api', httpProxy({ target : 'sometarget.com', changeOrigin : true, onProxyRes})
function onProxyRes (proxyResponse, request, response) {
console.log('proxyResponse', proxyResponse.headers);
console.log('response', response.headers);
}
// Results
/*
proxyResponse { date: 'Wed, 02 Jan 2019 12:06:40 GMT',
server: 'Apache',
location: 'http://sometarget.com/api',
'cache-control': 'max-age=30',
expires: 'Wed, 02 Jan 2019 12:07:10 GMT',
'content-length': '231',
connection: 'close',
'content-type': 'text/html; charset=iso-8859-1' }
response undefined
*/
Everything you'll need will be in proxyRes unless you have a specific use for response...
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
answered Jan 2 at 12:15
Libby LebyaneLibby Lebyane
35
35
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
add a comment |
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
Thanks for looking into! I asked little bit other thing, actually I'd like to change/modify the server response before sending that to client, like that ticket: github.com/chimurai/http-proxy-middleware/issues/97
– Eugenio R
Jan 2 at 13:39
add a comment |
Maybe it looks ugly little bit, but I'm able to manage that with the following code:
function onProxyRes(proxyResponse, request, serverResponse) {
var body = "";
var _write = serverResponse.write;
proxyResponse.on('data', function (chunk) {
body += chunk;
});
serverResponse.write = function (data) {
try{
var jsonData = JSON.parse(data);
// here we can modify jsonData
var buf = Buffer.from(JSON.stringify(jsonData), 'utf-8');
_write.call(serverResponse,buf);
} catch (err) {
console.log(err);
}
}
}
answered Jan 3 at 7:22
Eugenio REugenio R
133
add a comment |
Maybe it looks ugly little bit, but I'm able to manage that with the following code:
function onProxyRes(proxyResponse, request, serverResponse) {
var body = "";
var _write = serverResponse.write;
proxyResponse.on('data', function (chunk) {
body += chunk;
});
serverResponse.write = function (data) {
try{
var jsonData = JSON.parse(data);
// here we can modify jsonData
var buf = Buffer.from(JSON.stringify(jsonData), 'utf-8');
_write.call(serverResponse,buf);
} catch (err) {
console.log(err);
}
}
}
answered Jan 3 at 7:22
Eugenio REugenio R
133
add a comment |
Maybe it looks ugly little bit, but I'm able to manage that with the following code:
function onProxyRes(proxyResponse, request, serverResponse) {
var body = "";
var _write = serverResponse.write;
proxyResponse.on('data', function (chunk) {
body += chunk;
});
serverResponse.write = function (data) {
try{
var jsonData = JSON.parse(data);
// here we can modify jsonData
var buf = Buffer.from(JSON.stringify(jsonData), 'utf-8');
_write.call(serverResponse,buf);
} catch (err) {
console.log(err);
}
}
}
answered Jan 3 at 7:22
Eugenio REugenio R
133
Maybe it looks ugly little bit, but I'm able to manage that with the following code:
function onProxyRes(proxyResponse, request, serverResponse) {
var body = "";
var _write = serverResponse.write;
proxyResponse.on('data', function (chunk) {
body += chunk;
});
serverResponse.write = function (data) {
try{
var jsonData = JSON.parse(data);
// here we can modify jsonData
var buf = Buffer.from(JSON.stringify(jsonData), 'utf-8');
_write.call(serverResponse,buf);
} catch (err) {
console.log(err);
}
}
}
answered Jan 3 at 7:22
Eugenio REugenio R
133
answered Jan 3 at 7:22
Eugenio REugenio R
133
answered Jan 3 at 7:22
Eugenio REugenio R
133
answered Jan 3 at 7:22
Eugenio REugenio R
133
133
add a comment |
add a comment |
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