private void PostHandler( string commandLine, Header header, string content )
{
string url = GetUrlFromCommandLine( commandLine );
string[] queries = content.Split('&');
Dictionary<string, string> queryPairs = new Dictionary<string, string>();
foreach(string query in queries) {
string[] keyValuePair = query.Split('=');
queryPairs.Add(keyValuePair[0], keyValuePair[1]);
}
if(queryPairs["op"] == "%2B") //Ugly URL decoding for "+" and "/", since they are used
queryPairs["op"] = "+"; //for inserting into the reply content, to set selection in the dropdown list.
else if(queryPairs["op"] == "%2F")
queryPairs["op"] = "/";
double valueA = Double.Parse(queryPairs["valueA"]);
double valueB = Double.Parse(queryPairs["valueB"]);
double result = 0;
switch(queryPairs["op"]) {
case "+":
result = valueA + valueB;
break;
case "-":
result = valueA - valueB;
break;
case "*":
result = valueA * valueB;
break;
case "/":
result = valueA / valueB;
break;
default:
break;
}
string replyContent = File.ReadAllText(ROOT_PATH + url).
Replace("name=\"valueA\"", "name=\"valueA\" value=\"" + queryPairs["valueA"] + "\"").
Replace("name=\"valueB\"", "name=\"valueB\" value=\"" + queryPairs["valueB"] + "\"").
Replace("\"" + queryPairs["op"] + "\"", "\"" + queryPairs["op"] + "\"" + " selected").
Replace("\"result\">", "\"result\">" + result);
Header replyHeader = new Header();
replyHeader.Add("Content-Type", "text/html");
replyHeader.Add("Content-Length", replyContent.Length);
SendLine("HTTP/1.1 200 OK");
SendLine(replyHeader);
SendLine("");
SendLine(replyContent);
}
public void Run()
{
//WriteLine( "New connection from: " +
// connection.getInetAddress().getHostAddress() );
WriteLine( "Client connected" );
try {
NetworkStream stream = new NetworkStream( connection );
StreamReader reader = new StreamReader( stream );
writer = new StreamWriter( stream );
while ( true ) {
string line;
List<string> lines = new List<string>();
while ( ( line = reader.ReadLine() ).Length > 0 ) {
WriteLine( "header > " + line );
lines.Add( line );
}
WriteLine( "request received" );
Header header = new Header( lines, true );
// new --- check if there is any content?
string content;
if ( header.Has( "content-length" ) ) {
// note: there is no newline (i.e. empty line) after the content!
content = ReadNChars( reader, Int32.Parse( header[ "content-length" ] ) );
WriteLine( "content > " + content );
} else
content = string.Empty;
// new --- end
// new ----- added 'commandLine'-variable
string commandLine = lines[ 0 ];
string command = commandLine.Split()[ 0 ];
WriteLine( "command: " + command );
switch ( command.ToUpper() ) {
case "GET":
GetHandler( commandLine, header );
break;
case "POST":
PostHandler( commandLine, header, content );
break;
}
if ( header[ "CONNECTION" ].ToUpper() != "KEEP-ALIVE" )
break;
}
// temp closing - keep alive?
writer.Close();
WriteLine( "Connection closed" );
}
catch ( NullReferenceException ) {
WriteLine( "Client disconnected" );
}
catch ( Exception e ) {
WriteLine( "I/O error" );
WriteLine( e.Message );
WriteLine( e.StackTrace );
}
}
private void GetHandler( string commandLine, Header requestHeader )
{
string url = GetUrlFromCommandLine( commandLine );
string content = File.ReadAllText( ROOT_PATH + url );
Header replyHeader = new Header();
if(commandLine.Split(' ')[1] != "/favicon.ico") {
replyHeader.Add("Content-Type", "text/html");
replyHeader.Add("Content-Length", content.Length);
SendLine("HTTP/1.1 200 OK");
SendLine(replyHeader);
SendLine("");
SendLine(content);
} else
WriteLine("No handling of favicon.ico request implemented");
}