synsh · November 4, 2018 16:01 · Aug 12, 2013 · Aug 12, 2013 · Aug 12, 2013 · Aug 12, 2013
diff --git a/step2b.js b/step2b.js
@@ -21,4 +21,5 @@ http.createServer(function (req, res) {
     });
   }
 
-}).listen(1337);
+}).listen(1337);
+console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step3.js b/step3.js
@@ -32,4 +32,5 @@ http.createServer(function (req, res) {
 
   }
 
-}).listen(1337);
+}).listen(1337);
+console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step4.js b/step4.js
@@ -9,7 +9,7 @@ http.createServer(function(req, res) {
   var purl = url.parse(req.url, true);
   if (purl.pathname == '/hello') {
     res.writeHead(200, {'Content-Type': 'text/plain'});
-    res.end('hello ' + (purl.query.name||"world") );
+    res.end('hello ' + (purl.query.name||"world") ); // notice i use querystring arguments here http://127.0.0.1:1337/hello?name=me!
   } else {
     fs.exists(__dirname + purl.pathname, function(exists) {
       if (exists) {
@@ -38,4 +38,5 @@ http.createServer(function(req, res) {
 
   }
 
-}).listen(1337);
+}).listen(1337);
+console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step5.md b/step5.md
@@ -32,4 +32,12 @@ then you can use this package in your program like:
 
 
 npm documentation:
-  * https://npmjs.org/doc/
+  * https://npmjs.org/doc/
+
+people usually don't use vanilla node.js
+  * people use "async" module or some promises module. to write a less callback based code. and use simple parallel or serial  logic or use async foreach  or foreach limit for asynchronious batch processing.
+  * people use "express" module it is a better equipd http request and http response and http server. it has `./node_modules/express/bin/express --help` command that can generate a basic boilerplate.
+    * the basic structure of the https server callback is function(req,res,next){}
+    * if you like that you see you process it otherwise you modify what you want and call next to ket the handler to process the request.
+    * express has basic file server with mimes and everything.
+  * people use "mysql" module for database
diff --git a/step5.md b/step5.md
@@ -22,7 +22,7 @@ in the command prompt enter this new project folder and run:
 if you are laizy then just press many times Enter and thats it, or you can enter your information there.
 it will create package.json for you and node_modules folder. 
 
-then you can use npm in your program like:
+then you can use npm in your program like(run it in your project folder):
 
     npm install --save somepackage 
 

diff --git a/step2b.js b/step2b.js
@@ -0,0 +1,24 @@
+// i have orgenized the code and added mime for each condition seperately
+
+var http = require('http');
+var url = require('url');
+var fs = require('fs');
+
+http.createServer(function (req, res) {
+
+  var purl=url.parse(req.url,true);
+  if(purl.pathname=='/test')
+  {
+    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+    res.end('Test');
+  }
+  else
+  {
+    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+    fs.readFile('step3.js', function (err, data){
+     if (err) throw err;
+     res.end(data);
+    });
+  }
+
+}).listen(1337);
diff --git a/step3.js b/step3.js
@@ -1,4 +1,5 @@
-// orgenize the code and add mime for each condition seperately
+// check if a file exists - read the api docs to learn how to check if a file exists
+// there is a special variable in each module __dirname it contains the directory name of this file
 
 var http = require('http');
 var url = require('url');
@@ -14,11 +15,21 @@ http.createServer(function (req, res) {
   }
   else
   {
-    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
-    fs.readFile('step3.js', function (err, data){
-     if (err) throw err;
-     res.end(data);
+    fs.exists(__dirname+purl.pathname, function (exists) {
+      if (exists){
+       res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+       fs.readFile(__dirname+purl.pathname, function (err, data){
+         if (err) throw err;
+         res.end(data);
+       });
+      }
+      else
+      {
+       res.writeHead(404, {'Content-Type': 'text/plain; charset=UTF-8'});
+       res.end('File Not Found');
+      }
     });
+
   }
 
 }).listen(1337);
diff --git a/step4.js b/step4.js
@@ -1,35 +1,41 @@
-// check if a file exists - read the api docs to learn how to check if a file exists
-// there is a special variable in each module __dirname it contains the directory name of this file
+// add mimes
 
 var http = require('http');
 var url = require('url');
 var fs = require('fs');
 
-http.createServer(function (req, res) {
+http.createServer(function(req, res) {
 
-  var purl=url.parse(req.url,true);
-  if(purl.pathname=='/test')
-  {
-    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
-    res.end('Test');
-  }
-  else
-  {
-    fs.exists(__dirname+purl.pathname, function (exists) {
-      if (exists){
-       res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
-       fs.readFile(__dirname+purl.pathname, function (err, data){
-         if (err) throw err;
-         res.end(data);
-       });
-      }
-      else
-      {
-       res.writeHead(404, {'Content-Type': 'text/plain; charset=UTF-8'});
-       res.end('File Not Found');
+  var purl = url.parse(req.url, true);
+  if (purl.pathname == '/hello') {
+    res.writeHead(200, {'Content-Type': 'text/plain'});
+    res.end('hello ' + (purl.query.name||"world") );
+  } else {
+    fs.exists(__dirname + purl.pathname, function(exists) {
+      if (exists) {
+
+        var extention = purl.pathname.match(/\..+$/)[0];
+        var mime = {
+          '.js': 'text/javascript; charset=UTF-8',
+          '.txt': 'text/plain; charset=UTF-8',
+          '.html': 'text/html; charset=UTF-8',
+          '.png': 'image/png',
+          '.gif': 'image/gif',
+          '.jpg': 'image/jpeg'
+        }
+
+        res.writeHead(200, {'Content-Type': mime[extention]});
+        fs.readFile(__dirname + purl.pathname, function(err, data) {
+          if (err) throw err;
+          res.end(data);
+        });
+
+      } else {
+        res.writeHead(404, {'Content-Type': 'text/plain'});
+        res.end('File Not Found');
       }
     });
-    
+
   }
-  
+
 }).listen(1337);
diff --git a/step5.js b/step5.js
@@ -1,41 +0,0 @@
-// add mimes
-
-var http = require('http');
-var url = require('url');
-var fs = require('fs');
-
-http.createServer(function(req, res) {
-
-  var purl = url.parse(req.url, true);
-  if (purl.pathname == '/hello') {
-    res.writeHead(200, {'Content-Type': 'text/plain'});
-    res.end('hello ' + (purl.query.name||"world") );
-  } else {
-    fs.exists(__dirname + purl.pathname, function(exists) {
-      if (exists) {
-
-        var extention = purl.pathname.match(/\..+$/)[0];
-        var mime = {
-          '.js': 'text/javascript; charset=UTF-8',
-          '.txt': 'text/plain; charset=UTF-8',
-          '.html': 'text/html; charset=UTF-8',
-          '.png': 'image/png',
-          '.gif': 'image/gif',
-          '.jpg': 'image/jpeg'
-        }
-
-        res.writeHead(200, {'Content-Type': mime[extention]});
-        fs.readFile(__dirname + purl.pathname, function(err, data) {
-          if (err) throw err;
-          res.end(data);
-        });
-
-      } else {
-        res.writeHead(404, {'Content-Type': 'text/plain'});
-        res.end('File Not Found');
-      }
-    });
-
-  }
-
-}).listen(1337);

diff --git a/step6.md → step5.md b/step6.md → step5.md
diff --git a/step6.md b/step6.md
@@ -1,27 +1,32 @@
 search in google:
 node.js modules
 
+https://github.com/joyent/node/wiki/modules
+
 to see the whole range of possibilities.
 
-#using npm:
+
+using npm:
+
 as you installed node.js npm is also installed. this is how to use it:
 
 when you start a new project
-make an empty folder and put there your file it maybe called index.js it is also the default file name for a module.
+make an empty folder and put there your file.
+it maybe named index.js, it is also the default file name for a module.
 
 
 in the command prompt enter this new project folder and run:
 
     npm init
 
-if you are laizy then just press many times Enter and thats it or you can enter your information.
+if you are laizy then just press many times Enter and thats it, or you can enter your information there.
 it will create package.json for you and node_modules folder. 
 
 then you can use npm in your program like:
 
     npm install --save somepackage 
 
-the you can use it in your program like:
+then you can use this package in your program like:
 
     var somepackage=require('somepackage')
 

diff --git a/goals.md b/goals.md
@@ -6,3 +6,4 @@ goals:
 * to learn read the documentation
 * to understand the whole concept
 * to use some api for hands on expirience
+* streach goal: learn basic npm usage.
diff --git a/step6 b/step6
@@ -1,4 +0,0 @@
-search in google:
-node.js modules
-
-to see the whole range of possibilities.

diff --git a/step6.md b/step6.md
@@ -0,0 +1,30 @@
+search in google:
+node.js modules
+
+to see the whole range of possibilities.
+
+#using npm:
+as you installed node.js npm is also installed. this is how to use it:
+
+when you start a new project
+make an empty folder and put there your file it maybe called index.js it is also the default file name for a module.
+
+
+in the command prompt enter this new project folder and run:
+
+    npm init
+
+if you are laizy then just press many times Enter and thats it or you can enter your information.
+it will create package.json for you and node_modules folder. 
+
+then you can use npm in your program like:
+
+    npm install --save somepackage 
+
+the you can use it in your program like:
+
+    var somepackage=require('somepackage')
+
+
+npm documentation:
+  * https://npmjs.org/doc/
diff --git a/step4.js b/step4.js
@@ -1,4 +1,5 @@
-// check if a file exists - read the api docs
+// check if a file exists - read the api docs to learn how to check if a file exists
+// there is a special variable in each module __dirname it contains the directory name of this file
 
 var http = require('http');
 var url = require('url');

diff --git a/step6 b/step6
@@ -0,0 +1,4 @@
+search in google:
+node.js modules
+
+to see the whole range of possibilities.
diff --git a/step0.js b/step0.js
@@ -5,5 +5,5 @@ var http = require('http');
 http.createServer(function (req, res) {
   res.writeHead(200, {'Content-Type': 'text/plain'});
   res.end('Hello World\n');
-}).listen(1337, '127.0.0.1'); // remove the ip argument from listen. otherwise it will bind only to this ip address.
+}).listen(1337, '127.0.0.1'); // remove the ip argument from listen. otherwise it will bind only to this ip address. and you wont be able to connect if it runs on a server.
 console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step1.js b/step1.js
@@ -5,7 +5,7 @@ var http = require('http');
 var url = require('url');
 http.createServer(function (req, res) {
   res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
-  var purl=url.parse(req.query,true);
+  var purl=url.parse(req.url,true);
   if(purl.pathname=='/test')
   res.end('Test'); // there is response.write and response.end
                    // response.end('text') is response.write('text'), then response.end();

diff --git a/step2.js b/step2.js
@@ -11,7 +11,7 @@ var url = require('url');
 var fs = require('fs');
 http.createServer(function (req, res) {
   res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
-  var purl=url.parse(req.query,true);
+  var purl=url.parse(req.url,true);
   if(purl.pathname=='/test')
   res.end('Test');
   else

diff --git a/goals.md b/goals.md
@@ -0,0 +1,8 @@
+The plan is to take a simple nodejs server.
+and add to it simple file serving capabilities.
+also to have a custom responce to a certien url. to be able to make a simple api in addition of serving files.
+
+goals:
+* to learn read the documentation
+* to understand the whole concept
+* to use some api for hands on expirience
diff --git a/step0.js b/step0.js
@@ -0,0 +1,9 @@
+//go to nodejs.org and copy the simple hello world code to a file.
+// test it go with the browser to http://127.0.0.1:1337/
+
+var http = require('http');
+http.createServer(function (req, res) {
+  res.writeHead(200, {'Content-Type': 'text/plain'});
+  res.end('Hello World\n');
+}).listen(1337, '127.0.0.1'); // remove the ip argument from listen. otherwise it will bind only to this ip address.
+console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step1.js b/step1.js
@@ -0,0 +1,16 @@
+// 1. go to nodejs.org api documentation and read how to use url.parse
+// 2. use parse url and show a different text for a custom url
+
+var http = require('http');
+var url = require('url');
+http.createServer(function (req, res) {
+  res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+  var purl=url.parse(req.query,true);
+  if(purl.pathname=='/test')
+  res.end('Test'); // there is response.write and response.end
+                   // response.end('text') is response.write('text'), then response.end();
+  else
+  res.end('Hello World\n');
+
+}).listen(1337);
+console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step2.js b/step2.js
@@ -0,0 +1,26 @@
+// read in the api documentation about reading files.
+// read some file to the output
+//
+// there are many options actually.
+// files coud be read with a callback. - quite efficient and simple i will use this way.
+// files coud be read Sync as a return value from the function - blocking the program, this way the program wont be able serve others while waithing for the file to be read from disk.
+// a stream could be created and piped to the response stream - most cpu and memory efficient.
+
+var http = require('http');
+var url = require('url');
+var fs = require('fs');
+http.createServer(function (req, res) {
+  res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+  var purl=url.parse(req.query,true);
+  if(purl.pathname=='/test')
+  res.end('Test');
+  else
+  fs.readFile('step2.js', function (err, data) {
+    if (err) throw err;
+//    console.log(data);
+    res.end(data);
+  });
+
+
+}).listen(1337);
+console.log('Server running at http://127.0.0.1:1337/');
diff --git a/step3.js b/step3.js
@@ -0,0 +1,24 @@
+// orgenize the code and add mime for each condition seperately
+
+var http = require('http');
+var url = require('url');
+var fs = require('fs');
+
+http.createServer(function (req, res) {
+
+  var purl=url.parse(req.url,true);
+  if(purl.pathname=='/test')
+  {
+    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+    res.end('Test');
+  }
+  else
+  {
+    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+    fs.readFile('step3.js', function (err, data){
+     if (err) throw err;
+     res.end(data);
+    });
+  }
+
+}).listen(1337);
diff --git a/step4.js b/step4.js
@@ -0,0 +1,34 @@
+// check if a file exists - read the api docs
+
+var http = require('http');
+var url = require('url');
+var fs = require('fs');
+
+http.createServer(function (req, res) {
+
+  var purl=url.parse(req.url,true);
+  if(purl.pathname=='/test')
+  {
+    res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+    res.end('Test');
+  }
+  else
+  {
+    fs.exists(__dirname+purl.pathname, function (exists) {
+      if (exists){
+       res.writeHead(200, {'Content-Type': 'text/plain; charset=UTF-8'});
+       fs.readFile(__dirname+purl.pathname, function (err, data){
+         if (err) throw err;
+         res.end(data);
+       });
+      }
+      else
+      {
+       res.writeHead(404, {'Content-Type': 'text/plain; charset=UTF-8'});
+       res.end('File Not Found');
+      }
+    });
+
+  }
+
+}).listen(1337);
diff --git a/step5.js b/step5.js
@@ -0,0 +1,41 @@
+// add mimes
+
+var http = require('http');
+var url = require('url');
+var fs = require('fs');
+
+http.createServer(function(req, res) {
+
+  var purl = url.parse(req.url, true);
+  if (purl.pathname == '/hello') {
+    res.writeHead(200, {'Content-Type': 'text/plain'});
+    res.end('hello ' + (purl.query.name||"world") );
+  } else {
+    fs.exists(__dirname + purl.pathname, function(exists) {
+      if (exists) {
+
+        var extention = purl.pathname.match(/\..+$/)[0];
+        var mime = {
+          '.js': 'text/javascript; charset=UTF-8',
+          '.txt': 'text/plain; charset=UTF-8',
+          '.html': 'text/html; charset=UTF-8',
+          '.png': 'image/png',
+          '.gif': 'image/gif',
+          '.jpg': 'image/jpeg'
+        }
+
+        res.writeHead(200, {'Content-Type': mime[extention]});
+        fs.readFile(__dirname + purl.pathname, function(err, data) {
+          if (err) throw err;
+          res.end(data);
+        });
+
+      } else {
+        res.writeHead(404, {'Content-Type': 'text/plain'});
+        res.end('File Not Found');
+      }
+    });
+
+  }
+
+}).listen(1337);
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