Transferring 8KB of Data

You are reading a single comment by @Julian1 and its replies. Click here to read the full conversation.

•

Julian1

Thank you for your help @allObjects and @Robin.
I got it now working, and it's a good solution (for me).
The idea is from Best way to stream base64 encoded string to a web client and I used the drain event.
I saved the head and the body in the Storage module and send them chunk for chunk.

function sendMainPage(res) {
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.write('<html lang="en">');
    //chunk size
    let bytesperChunk = 2048;
    //cssN stores how many chunks i need to send
    let cssN = Math.ceil(storage.read('main.css').length / bytesperChunk );
    //cssI stores how many chunks are already send
    let cssI = 0;
    let htmlN = Math.ceil(storage.read('main.html').length / bytesperChunk );
    let htmlI = 0;
    res.on('drain', function(){
        if (cssN == cssI) {
            if (htmlN == htmlI) {
                //Here is my client js code with all the values and the end of the html file 
                res.end(``);
                print('end');
            }else {
                res.write(storage.read('main.html', htmlI * bytesperChunk , bytesperChunk ));
                print(process.memory().free);
                htmlI++;
            }
        }else {
            res.write(storage.read('main.css', cssI * bytesperChunk , bytesperChunk ));
            cssI++;
            print(cssI);
        }
    });
}

I don't know if it's the best solution, but it works for me and when I request the page the loading time is only 2-3 seconds.
Not only that, but I still have 850 free blocks of ram, because now I don't need to load the long HTML string before I send it.

Transferring 8KB of Data

About

Espruino