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ProtocolType Enumeration
Visual Studio 2010
Specifies the protocols that the Socket class supports.
Assembly: System (in System.dll)
| Member name | Description | |
|---|---|---|
| IP | Internet Protocol. | |
| IPv6HopByHopOptions | IPv6 Hop by Hop Options header. | |
| Icmp | Internet Control Message Protocol. | |
| Igmp | Internet Group Management Protocol. | |
| Ggp | Gateway To Gateway Protocol. | |
| IPv4 | Internet Protocol version 4. | |
| Tcp | Transmission Control Protocol. | |
| Pup | PARC Universal Packet Protocol. | |
| Udp | User Datagram Protocol. | |
| Idp | Internet Datagram Protocol. | |
| IPv6 | Internet Protocol version 6 (IPv6). | |
| IPv6RoutingHeader | IPv6 Routing header. | |
| IPv6FragmentHeader | IPv6 Fragment header. | |
| IPSecEncapsulatingSecurityPayload | IPv6 Encapsulating Security Payload header. | |
| IPSecAuthenticationHeader | IPv6 Authentication header. For details, see RFC 2292 section 2.2.1, available at http://www.ietf.org. | |
| IcmpV6 | Internet Control Message Protocol for IPv6. | |
| IPv6NoNextHeader | IPv6 No next header. | |
| IPv6DestinationOptions | IPv6 Destination Options header. | |
| ND | Net Disk Protocol (unofficial). | |
| Raw | Raw IP packet protocol. | |
| Unspecified | Unspecified protocol. | |
| Ipx | Internet Packet Exchange Protocol. | |
| Spx | Sequenced Packet Exchange protocol. | |
| SpxII | Sequenced Packet Exchange version 2 protocol. | |
| Unknown | Unknown protocol. |
The following example demonstrates how to use ProtocolType to instantiate a Socket.
using System; using System.Text; using System.IO; using System.Net; using System.Net.Sockets; public class Sample { public static string DoSocketGet(string server) { //Set up variables and String to write to the server. Encoding ASCII = Encoding.ASCII; string Get = "GET / HTTP/1.1\r\nHost: " + server + "\r\nConnection: Close\r\n\r\n"; Byte[] ByteGet = ASCII.GetBytes(Get); Byte[] RecvBytes = new Byte[256]; String strRetPage = null; // IPAddress and IPEndPoint represent the endpoint that will // receive the request. // Get first IPAddress in list return by DNS. try { // Define those variables to be evaluated in the next for loop and // then used to connect to the server. These variables are defined // outside the for loop to make them accessible there after. Socket s = null; IPEndPoint hostEndPoint; IPAddress hostAddress = null; int conPort = 80; // Get DNS host information. IPHostEntry hostInfo = Dns.GetHostEntry(server); // Get the DNS IP addresses associated with the host. IPAddress[] IPaddresses = hostInfo.AddressList; // Evaluate the socket and receiving host IPAddress and IPEndPoint. for (int index=0; index<IPaddresses.Length; index++) { hostAddress = IPaddresses[index]; hostEndPoint = new IPEndPoint(hostAddress, conPort); // Creates the Socket to send data over a TCP connection. s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp ); // Connect to the host using its IPEndPoint. s.Connect(hostEndPoint); if (!s.Connected) { // Connection failed, try next IPaddress. strRetPage = "Unable to connect to host"; s = null; continue; } // Sent the GET request to the host. s.Send(ByteGet, ByteGet.Length, 0); } // End of the for loop. // Receive the host home page content and loop until all the data is received. Int32 bytes = s.Receive(RecvBytes, RecvBytes.Length, 0); strRetPage = "Default HTML page on " + server + ":\r\n"; strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes); while (bytes > 0) { bytes = s.Receive(RecvBytes, RecvBytes.Length, 0); strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes); } } // End of the try block. catch(SocketException e) { Console.WriteLine("SocketException caught!!!"); Console.WriteLine("Source : " + e.Source); Console.WriteLine("Message : " + e.Message); } catch(ArgumentNullException e) { Console.WriteLine("ArgumentNullException caught!!!"); Console.WriteLine("Source : " + e.Source); Console.WriteLine("Message : " + e.Message); } catch(NullReferenceException e) { Console.WriteLine("NullReferenceException caught!!!"); Console.WriteLine("Source : " + e.Source); Console.WriteLine("Message : " + e.Message); } catch(Exception e) { Console.WriteLine("Exception caught!!!"); Console.WriteLine("Source : " + e.Source); Console.WriteLine("Message : " + e.Message); } return strRetPage; } public static void Main() { Console.WriteLine(DoSocketGet("localhost")); } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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