Sending image as binary via require(“http”) request to a remote server

问题

I'm trying to send an image to remote server from nodejs server. Here's the request format so far.

Note: Just like binary request in postman and choosing a file and sending)

function upload(options, body) {
    body = body || '';
    return new Promise(function(resolve, reject){
        const https = require('https');
        https.request(options, function(response) {
            var body = [];
            response.on('data', function(chunk) {
                body.push(chunk);
            });
            response.on('end', function(){
                resolve(JSON.parse(Buffer.concat(body).toString()))
            });
        }).on('error', function(error) {
            reject(error);
        }).end(body);
    });
}

Use:

var options = {
    hostname: "hostname",
    path: "/upload",
    port: 443,
    method: 'PUT',
    headers: {
        'Accept': 'application/json',
        'Content-Type': 'image/png'
    }
};

fs.readFile('./img/thumbnail.png', function(error, data) {
     options.body = data;
     upload(options).then(...
});

Edit 2

After several attempts, came across an efficient strategy to upload images via streams, here's how it looks like but still not success.

const https = require('https');
var request = https.request(options, function(response) {
    var buffers = [];
    response.on('data', function(chunk) {
        buffers.push(chunk);
    });
    response.on('end', function(){
        console.log(response.headers['content-type']);
        var body = JSON.parse(buffers.length ? Buffer.concat(buffers).toString() : '""');
        response.statusCode >= 200 && response.statusCode < 300 ? resolve(body) : reject(body);
    });
}).on('error', function(error) {
    reject(error);
});

const fs = require('fs');
var readStream = fs.ReadStream(body.path);
readStream.pipe(request);
readStream.on('close', function(){
    request.end();
});

Reference

回答1:

I think you just want this:

fs.createReadStream('./img/thumbnail.png').pipe(https.request({
  hostname: 'hostname',
  path: '/upload',
  method: 'PUT',
  headers: {
    Accept: 'application/json',
    'Content-Type': 'image/png',
  }
}, function (response) { ... }));

The issue with your code is that you were putting the body into options.body, but per the documentation, it doesn't look like there is any such option.

来源：https://stackoverflow.com/questions/38023426/sending-image-as-binary-via-requirehttp-request-to-a-remote-server

标签

javascript

node.js

http-request