Initial commit - upload-serve-files, download-file-request, echo-request

.gitignore

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+node_modules/
+package-lock.json

README.md

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+# Testground Web Devel
+
+Various web development related tests and examples.

node/download-file-request/index.js

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+var http = require('http');
+var qs = require('querystring');
+
+var body;
+var mime = 'application/zip';
+var port = 3000;
+
+var server = http.createServer(function (req, res) {
+    if (req.method !== 'POST') {
+        res.writeHead(200);
+        res.end('Only POST method supported so far!');
+    };
+    req.on('data', function (data) {
+        body += data;
+
+        if (body.length > 1e6)
+            req.connection.destroy();
+    });
+    req.on('end', function () {
+        var post = qs.parse(body);
+
+        if (!post.file) {
+            res.writeHead(200);
+            res.end('No file provided!');
+        }
+
+        var content = 'data:' + mime + ';base64,' + post.file;
+
+        res.writeHead(200, { 'Content-Type': mime });
+        res.end(content, 'utf-8');
+    });
+});
+
+server.listen(port, function () {
+    console.log('File resender listening on port ' + port);
+});

node/download-file-request/package.json

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+{
+  "name": "download-file-request",
+  "version": "1.0.0",
+  "description": "Offers download response for 'file' field post request",
+  "main": "index.js",
+  "scripts": {
+    "serve": "node index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": " <tomas.varga.cz@gmail.com>",
+  "license": "ISC",
+  "dependencies": {
+  },
+  "devDependencies": {}
+}

node/echo-request/echo-request.js

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+/**
+ * A simple service just echoes received data
+ *
+ * usage: node echorequest.js [port=3001]
+ */
+
+const http = require('http');
+
+const hostname = '0.0.0.0';
+const port = process.argv[2] || 3001;
+
+const server = http.createServer(function (req, res) {
+  console.log(`\n${req.method} ${req.url}`);
+  console.log('HEADERS:', req.headers);
+
+  res.statusCode = 200;
+  res.setHeader('Content-Type', 'text/plain');
+
+  var data = '';
+
+  req.on('data', function(chunk) {
+    data += chunk
+  });
+
+  req.on('end', function() {
+    console.log('BODY: ' + data);
+    res.end(data + "\n");
+  });
+});
+
+server.listen(port, hostname, function () {
+  console.log(`Server running at http://localhost:${port}/`);
+});

node/echo-request/send-request-curl.sh

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+#!/usr/bin/env sh
+
+port=${1:-3001}
+
+curl -d 'par1=value1' \
+    -d 'par2=value2' \
+    -d 'par3=value3&par4=value4' \
+    -XPOST "localhost:$port"

node/upload-serve-files-koa_v1/.gitignore

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+node_modules/
+files/*

node/upload-serve-files-koa_v1/index.js

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+var app = require('koa')();
+var mount = require('koa-mount');
+var serve = require('koa-static');
+var sendfile = require('koa-sendfile');
+var parse = require('co-busboy');
+var fs = require('fs');
+
+var ROOT_DIR = __dirname + '/';
+var FILES_DIR = ROOT_DIR + 'files/';
+
+app.use(function *showRequest(next) {
+    console.log('path:', this.path, 'method:', this.method, '-----------------------');
+    console.log('querystring:', this.request.querystring, 'query:', this.request.query);
+    console.log('urlencoded:', this.request.is('urlencoded'), 'multipart:', this.request.is('multipart'));
+    console.log('request:', this.request);
+    yield next;
+});
+
+app.use(serve(__dirname + '/public'));
+
+app.use(function *getMultipartRequest(next) {
+    if (!this.request.is('multipart'))
+        return yield next;
+
+    var files = [];
+    var parts = parse(this);
+    var part;
+
+    while (part = yield parts) {
+        if (!part.pipe) {
+            console.log('fields:', part);
+            continue;
+        }
+
+        /*
+        yield saveFile(part, FILES_DIR).then(function (resp) {
+            files.push(resp);
+        }, function (error) {
+            files.push(error);
+        });
+        */
+        files.push(yield saveFile(part, FILES_DIR));
+    }
+
+    this.body = files;
+});
+
+app.use(mount('/download', function *sendFileHandler(next) {
+    yield next;
+
+    var fname = this.request.query.file || 'archive.zip';
+
+    if (!(yield fileExists(FILES_DIR + fname)))
+        return this.body = { message: 'File not found.', file: fname };
+
+    var stats = yield sendfile(this, FILES_DIR + fname);
+    //console.log('sendfile response:', this.response);
+
+    if (!this.status)
+        this.throw(404);
+}));
+
+function saveFile(stream, destDir) {
+    //return new Promise(function(resolve, reject) {
+    return function(done) {
+        var writer = fs.createWriteStream(destDir + stream.filename);
+        var resp = { file: stream.filename };
+
+        stream.on('error', finish);
+        writer.on('error', finish);
+
+        writer.on('close', function () {
+            finish(null, { bytesWritten: writer.bytesWritten });
+        });
+
+        stream.pipe(writer);
+
+        function finish(error, args) {
+            resp.message = error ? 'saving ' + resp.file + ' failed:' + error
+                    : 'saved ' + resp.file + ' (' + args.bytesWritten + ' bytes)';
+            //error ? reject(resp) : resolve(resp);
+            done(null, resp);
+        }
+    //});
+    }
+}
+
+function fileExists(path) {
+    return function(done) {
+        fs.stat(path, function (err, res) {
+            done(null, !err);
+        });
+    }
+}
+
+app.listen(3000);
+
+console.log('listening on port 3000');

node/upload-serve-files-koa_v1/package.json

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+{
+  "name": "upload-serve-files-koa_v1",
+  "version": "1.0.0",
+  "description": "Testing point for downloads & uploads",
+  "main": "index.js",
+  "scripts": {
+    "serve": "node index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": " <tomas.varga.cz@gmail.com>",
+  "license": "ISC",
+  "dependencies": {
+    "co-busboy": "^1.3.1",
+    "koa": "^1.2.0",
+    "koa-mount": "^1.3.0",
+    "koa-sendfile": "^2.0.0",
+    "koa-static": "^2.0.0"
+  },
+  "devDependencies": {}
+}

node/upload-serve-files-koa_v1/public/404.html

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+<html>
+<head>
+  <title>Not Found</title>
+  <style>
+    body {
+      padding: 50px;
+      font: 14px Helvetica, Arial;
+    }
+  </style>
+</head>
+<body>
+  <h1>Sorry! Can't find that.</h1>
+  <p>The page you requested cannot be found.</p>
+</body>
+</html>

node/upload-serve-files-koa_v1/public/index.html

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+<!DOCTYPE html>
+<html>
+<head>
+  <title>Upload</title>
+  <style>
+    body {
+      padding: 50px;
+      font: 14px Helvetica, Arial;
+    }
+  </style>
+</head>
+<body>
+  <h1>File Upload</h1>
+  <p>Try uploading multiple files at a time.</p>
+  <form action="/" method="post" enctype="multipart/form-data">
+    <input type="file" name="file" multiple>
+    <input type="submit" value="Upload">
+  </form>
+</body>
+</html>