From daf6f48fca4178e8f092a83a46cc51356fe3b5f1 Mon Sep 17 00:00:00 2001
From: AJ ONeal <coolaj86@gmail.com>
Date: Sat, 26 Jun 2010 11:30:19 -0600
Subject: [PATCH] Added it347 class project

---
 EchoTCP/EchoClient.rb  | 31 +++++++++++++++++++++++++
 EchoTCP/EchoServer.rb  | 40 ++++++++++++++++++++++++++++++++
 EchoTCP/IT347Client.rb | 31 +++++++++++++++++++++++++
 EchoTCP/IT347Server.rb | 52 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 154 insertions(+)
 create mode 100755 EchoTCP/EchoClient.rb
 create mode 100755 EchoTCP/EchoServer.rb
 create mode 100755 EchoTCP/IT347Client.rb
 create mode 100755 EchoTCP/IT347Server.rb

diff --git a/EchoTCP/EchoClient.rb b/EchoTCP/EchoClient.rb
new file mode 100755
index 0000000..6b27296
--- /dev/null
+++ b/EchoTCP/EchoClient.rb
@@ -0,0 +1,31 @@
+#!/usr/bin/env ruby
+#http://www.tutorialspoint.com/ruby/ruby_socket_programming.htm
+
+require 'socket'
+host, port = ARGV[0..1]
+unless host && port
+  print("USAGE: ./TCPClient.rb host port\n")
+  exit
+end
+
+server = TCPSocket.open(host, port)
+
+@connections = [server, STDIN]
+stop = false
+loop {
+  res = select(@connections, nil, nil)
+  res[0].each do |socket|
+    if socket == server
+      puts socket.gets
+    end
+    if socket == STDIN
+      line = socket.gets
+      server.puts line
+      stop = ("quit" == line.chomp || "exit" == line.chomp || "q" == line.chomp)
+    end
+    break if stop
+  end
+  break if stop
+}
+
+server.close
diff --git a/EchoTCP/EchoServer.rb b/EchoTCP/EchoServer.rb
new file mode 100755
index 0000000..d127a0c
--- /dev/null
+++ b/EchoTCP/EchoServer.rb
@@ -0,0 +1,40 @@
+#!/usr/bin/env ruby
+require 'socket'                # Get sockets from stdlib
+
+MAX_CLIENTS = 20
+num_clients = 0
+
+host = '0.0.0.0'
+port = 7886
+
+puts "Starting server on #{host}:#{port}. Allowing #{MAX_CLIENTS} connections"
+server = TCPServer.open(host, port)
+loop {                          # Servers run forever
+  Thread.start(server.accept) do |client|
+    num_clients += 1
+    if MAX_CLIENTS >= num_clients
+      client.puts "(#{Time.now.ctime}) Hello Client ##{num_clients}!"
+      puts "(#{Time.now.ctime}) Hello Client ##{num_clients}!"
+      while !client.nil? && line = client.gets
+        puts "Client says:" + line.inspect
+        c_msg = case line
+          when /^q\W/
+          when /^quit\W/
+          when /^exit\W/
+          else line
+        end
+        if c_msg.nil?
+          client.puts "Adios Muchacho! (you didn't close your connection, I'll do it for you)"
+          puts "Client Left"
+          client.close
+          client = nil
+        else
+          client.puts c_msg
+        end
+      end
+    else
+      client.puts "(#{Time.now.ctime}) Too many connections (#{num_clients}). Bye!"
+    end
+    num_clients -= 1
+  end
+}
diff --git a/EchoTCP/IT347Client.rb b/EchoTCP/IT347Client.rb
new file mode 100755
index 0000000..87cd3a6
--- /dev/null
+++ b/EchoTCP/IT347Client.rb
@@ -0,0 +1,31 @@
+#!/usr/bin/env ruby
+#http://www.tutorialspoint.com/ruby/ruby_socket_programming.htm
+
+require 'socket'
+host, port = ARGV[0..1]
+unless host && port
+  print("USAGE: ./TCPClient.rb host port\n")
+  exit
+end
+
+server = TCPSocket.open(host, port)
+
+@connections = [server, STDIN]
+stop = false
+loop {
+  res = select(@connections, nil, nil)
+  res[0].each do |socket|
+    if socket == server
+      puts socket.gets
+    end
+    if socket == STDIN
+      line = socket.gets
+      server.puts line
+      stop = ("ADIOS" == line.chomp)
+    end
+    break if stop
+  end
+  break if stop
+}
+
+server.close
diff --git a/EchoTCP/IT347Server.rb b/EchoTCP/IT347Server.rb
new file mode 100755
index 0000000..d103701
--- /dev/null
+++ b/EchoTCP/IT347Server.rb
@@ -0,0 +1,52 @@
+#!/usr/bin/env ruby
+require 'socket'                # Get sockets from stdlib
+
+MAX_CLIENTS = 20
+num_clients = 0
+
+host = '0.0.0.0'
+port = 7886
+
+puts "Starting server on #{host}:#{port}. Allowing #{MAX_CLIENTS} connections"
+server = TCPServer.open(host, port)
+names = []
+words = []
+loop {                          # Servers run forever
+  Thread.start(server.accept) do |client|
+    num_clients += 1
+    if MAX_CLIENTS >= num_clients
+      client.puts "(#{Time.now.ctime}) Hello Client ##{num_clients}!"
+      puts "(#{Time.now.ctime}) Hello Client ##{num_clients}!"
+      while !client.nil? && line = client.gets
+        puts "Client says:" + line.inspect
+        c_msg = case line
+          when /^GET it347\W/ then "IT Rocks!"
+          when /^GET \w+/
+            word = line.gsub(/^GET /, '')
+            words << word
+            word
+          when /^NAME \w+/ 
+            name = line.gsub(/^NAME /, '')
+            names << name
+            "Thank You"
+          when /^GETNAMES\W/ then names.inspect
+          when /^GETWORDS\W/ then words.inspect
+          when /^ADIOS\W/
+          else "400: Bad Request"
+        end
+        if c_msg.nil?
+          client.puts "Adios Muchacho! (you didn't close your connection, I'll do it for you)"
+          puts "Client Left"
+          client.close
+          client = nil
+        else
+          puts "Sent client:" + c_msg
+          client.puts c_msg
+        end
+      end
+    else
+      client.puts "(#{Time.now.ctime}) Too many connections (#{num_clients}). Bye!"
+    end
+    num_clients -= 1
+  end
+}