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bbottema / Express with multipart-form-data file upload and read back to client
Last active September 30, 2015 19:20
A complete Express 4 example using multer to read multipart/form-data png file upload and reading the file back to the client as binary data
var express = require('express');
var busboy = require('connect-busboy'); // middleware for form/file upload
var fs = require('fs');
var app = express();
app.use(express.static('./public'));
app.use(busboy());
app.post('/testFormDataBinary', function(req, res) {
req.pipe(req.busboy);
@bbottema
bbottema / List 2 Pairs
Created October 23, 2017 08:21 — forked from ktejnora/List 2 Pairs
Java 8 Create list of pairs from List of items. Java does not have Pair and groupBy uses AtomicInteger trick.
package cz.tejnora.pokusy;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
@bbottema
bbottema / jquery-css.js
Last active May 28, 2018 13:48
jquery plugin that triggers event when a css style property is being changed
/*
Usage:
$ele.on('style', function(e, prop, value) {
if (prop == 'left') {
console.debug('new value for left: ' + value);
}
});
*/
// This plugin also throws events for individual style properties incase the entire 'style' attribute is removed
(function() {
@bbottema
bbottema / index.html
Created June 7, 2018 19:06
Console log to HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Log to HTML</title>
<link rel="icon" href="data:;base64,=">
<script>
(function(eleLocator) {
fixLoggingFunc('log');
@bbottema
bbottema / Dijkstra.java
Created September 6, 2018 17:50
Minimal Dijkstra Java (uses Lombok)
// cleaned up generics version of Baeldung's Dijkstra (https://www.baeldung.com/java-dijkstra)
public class Dijkstra {
public static <T> void findShortestPathToAllOtherNodes(Node<T> startingPoint) {
startingPoint.setCost(0);
Set<Node<T>> settledNodes = new HashSet<>();
Set<Node<T>> unsettledNodes = new HashSet<>();
unsettledNodes.add(startingPoint);
@bbottema
bbottema / REST.md
Created March 4, 2019 15:33 — forked from chrisnicola/REST.md
Is REST specific to HTTP?

Davy Brion and Jef Claes were discussing whether or not you can have REST without HTTP. Is this another peanut butter and chocolate thing? I think it's hard to extract REST from HTTP because that is how it is defined. I mean quite literally how it is defined in Fielding's dissertation. REST, the term, is short for "representational state transfer" but it still specifically describes an architectural style of representing state transfer via the HTTP specification.

But what if we didn't let such a little thing like semantics get in our way here and only took REST for it's literal name definition and not as the specification laid out in Fielding's dissertation? What if REST only meant a representation of state transfers? I'm not muc

@bbottema
bbottema / openssl-cheat.sh
Created June 25, 2019 11:59 — forked from alvarow/openssl-cheat.sh
OpenSSL and Keytool cheat sheet
# Generate a new key
openssl genrsa -out server.key 2048
# Generate a new CSR
openssl req -sha256 -new -key server.key -out server.csr
# Check certificate against CA
openssl verify -verbose -CApath ./CA/ -CAfile ./CA/cacert.pem cert.pem
# Self Signed
@bbottema
bbottema / Read ajax binary response data to base64
Created September 30, 2015 18:19
Complete example using FormData to post a variable and file to a service and parsing the binary result to base64
var formData = new FormData();
formData.append("user", "Mario");
formData.append("testdot", imgData);
createRequest("POST", "some webservice", callback).send(formData);
/*
* SOLUTION 1
*/
function callback(file) {
var reader = new FileReader();
@bbottema
bbottema / MimeType.java
Last active July 20, 2019 20:10
Mimetypes compiled from two big public lists
class MimeType {
private static final MimetypesFileTypeMap MIMETYPES_FILE_TYPE_MAP = createMap();
/**
* @return a vastly improved mimetype map
*/
private static MimetypesFileTypeMap createMap() {
try (InputStream is = MimeType.class.getClassLoader().getResourceAsStream("mimetypes.txt")) {
return new MimetypesFileTypeMap(is);
@bbottema
bbottema / test-lossy-webp-support.js
Created December 27, 2019 10:32
Ways of detecting webp browser support
// works for all browsers
async function supportsWebp():Promise<boolean> {
const img = new Image();
return new Promise(resolve => {
img.onload = function () {resolve((img.width > 0) && (img.height > 0));};
img.onerror = function () {resolve(false);};
img.src = "data:image/webp;base64," + "UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA";
});
}