void SendTcpMethod(string[] args)
{
//Check for correct amount of arguments
if (args.Length != 2)
throw new ArgumentException("Parameters: <Destination> <Port>");
string server = args[0];
int servPort = Int32.Parse(args[1]);
//Create a socket that is connected to a server on a specifed port
TcpClient client = new TcpClient(server, servPort);
NetworkStream netStream = client.GetStream();
//Make an item to quote
ItemQuote quote = new ItemQuote(12345678909876554L, "5mm Super Widgets", 1000, 1299, true, false);
//Send text-encoded quote
ItemQuoteEncoderText coder = new ItemQuoteEncoderText();
byte[] codedQuote = coder.encode(quote);
Console.WriteLine("Sening text-encoded quote (" + codedQuote.Length + " bytes): ");
Console.WriteLine(quote);
netStream.Write(codedQuote, 0, codedQuote.Length);
//Receive binary-encoded quote
ItemQuoteDecoder decoder = new ItemQuoteDecoderBin();
ItemQuote receivedQuote = decoder.decode(client.GetStream());
Console.WriteLine("Reveived Binary-Encode Quote:");
Console.WriteLine(receivedQuote);
}
void SendUdpMethod(string[] args)
{
//Check for correct amount of arguments
if ((args.Length < 2) || (args.Length > 3))
throw new ArgumentException("Parameters: <Destination> <Port> [<Encoding>]");
string server = args[0];
int destPort = Int32.Parse(args[1]);
//Make an item to quote
ItemQuote quote = new ItemQuote(12345678909876554L, "5mm Super Widgets", 1000, 1299, true, false);
UdpClient client = new UdpClient();
ItemQuoteEncoder encoder = ((args.Length == 3) ? new ItemQuoteEncoderText(args[2]) : new ItemQuoteEncoderText());
byte[] codedQuote = encoder.encode(quote);
client.Send(codedQuote, codedQuote.Length, server, destPort);
client.Close();
}
public byte[] encode(ItemQuote item)
{
MemoryStream mem = new MemoryStream();
BinaryWriter output = new BinaryWriter(new BufferedStream(mem));
output.Write(IPAddress.HostToNetworkOrder(item.itemNumber));
output.Write(IPAddress.HostToNetworkOrder(item.quantity));
output.Write(IPAddress.HostToNetworkOrder(item.unitPrice));
byte flags = 0;
if (item.discounted)
flags |= ItemQuoteBinConst.DISCOUNT_FLAG;
if (item.inStock)
flags |= ItemQuoteBinConst.IN_STOCK_FLAG;
output.Write(flags);
byte[] encodedDesc = encoding.GetBytes(item.itemDescription);
if (encodedDesc.Length > ItemQuoteBinConst.MAX_DESC_LEN)
throw new IOException("Item description eceeds encoded length limit (" + ItemQuoteBinConst.MAX_DESC_LEN + ")");
output.Write((byte)encodedDesc.Length);
output.Write(encodedDesc);
output.Flush();
return mem.ToArray();
}
public byte[] encode(ItemQuote item)
{
string EncodedString = item.itemNumber + " ";
if (item.itemDescription.IndexOf('\n') != -1)
throw new IOException("Invalid description (contains newline).");
EncodedString += item.itemDescription + "\n";
EncodedString += item.quantity + " ";
EncodedString += item.unitPrice + " ";
if (item.discounted)
//Only include 'd' if the item is discounted
EncodedString += "d";
if (item.inStock)
//Only include 's' if the item is in stock
EncodedString += "s";
EncodedString += "\n";
if (EncodedString.Length > ItemQuoteTextConst.MAX_WIRE_LENGTH)
throw new IOException("Encoded length too long.");
byte[] buf = encoding.GetBytes(EncodedString);
return buf;
}
