How to gzip http request post(client) data for node.js server - node.js

Question

I have implemented node.js server application, which accepts post data from client(long json string). Is there a way I can gzip the post data at browser end and unzip it in node.js?
I specifically want to gzip the request and not response.

Answer 1

check https://jsfiddle.net/gynz82tg/
decompress in nodejs just same after you get the base64 encoded request string.
var jsonStr = JSON.stringify({
name: "JiangYD"
})
$('#origin').text(jsonStr);
var zip = new JSZip();
zip.file("data", jsonStr);
var content = zip.generate();
$('#compressed').text(content);
zip = new JSZip(content, {base64:true});
$('#decompressed').text(zip.file("data").asText());
<script src="https://raw.githubusercontent.com/Stuk/jszip/master/dist/jszip.js"></script>
<div id='origin'></div>
<div id='compressed'></div>
<div id='decompressed'></div>
UPDATE
because jsZip update the API
https://jsfiddle.net/cvuqr6h4/
async function go(){
const jsonStr = JSON.stringify({
name: "JiangYD"
})
$('#origin').text(jsonStr);
let zip = new JSZip();
zip.file("data", jsonStr);
const content = await zip.generateAsync({type : "base64"});
$('#compressed').text(content);
zip = new JSZip();
await zip.loadAsync(content, {base64:true});
const decoded = await zip.file("data").async('string');
$('#decompressed').text(decoded);
}
go();

Answer 2

You could try this: https://github.com/sapienlab/jsonpack
Example Client Code:
<script src="jsonpack.js" />
<script>
var BIG_JSON = {.....};
var packed = jsonpack.pack(BIG_JSON);
$.post('path_to_server',packed);
</script>
Example Nodejs Code:
var jsonpack = require('jsonpack/main');
app.on('/packed_data',function(req,res){
try{
jsonpack.unpack(req.data);
}catch(e){
//not good packed data.
}
})
This is a sample code of course i don't know what framework or libraries you use, but you can see how this could be implemented.
Anyway be careful with this because zipping and unzipping data is always a heavy cpu bound task. If you have several megabytes of data you dont want to make your users from phones,tablets etc.. to make this tasks!