How to send a buffer to an HTTP request?

Question

I have a file in memory (buffer) - there is no file in the file system. I want to send this buffer to another server that reports HTTP.

For example, some API A creates a file in memory, SignServer manipulates such files and responds with a new buffer. My API takes a file from A and passes it to SignServer.

I tried to send the file to SignServer in several ways, but it continues to respond with a status of 400 (the missing "data" field in the request).

---

What I tried:

var http = require('http');
var querystring = require('querystring');

var data = querystring.stringify({
    workerName: 'PDFSigner',
    data: file_buffer
});

var request = new http.ClientRequest({
    hostname: 'localhost',
    port: 8080,
    path: '/signserver/process',
    method: 'GET',
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
        // I also tried 'multipart/form-data'
        'Content-Length': Buffer.byteLength(data)
    }
});

request.end(data);

I tried to print dataand it showed:

workerName = PDFSigner & data =

, data file_buffer. file_buffer, ( null, undefined, ). , .

request, .

, SignServer Node JavaScript. Java, , , json ( querystring). , json.

Answer 1

, data ​​ , , .

:

var data = querystring.stringify({
    workerName: 'PDFSigner',
    data: escape(file_buffer).toString('binary')
});

@robertklep, , application/x-www-form-urlencoded. multipart/form-data.