是否可以通过 HTTP 或 FTP 协议而不是 TCP/IP 传输数据 stream

Question

The requirement is to transfer bytes data stream(in bytes format) through HTTP or FTP protocol. I am doing it with IP protocol but as it is unable to be handled by load balancers. Right now I am sending data stream by converting into byte format and at receiver's end decoding it into string form. The same thing I wanna do with HTTP protocol.

Socket sock = new Socket(AddressFamily.InterNetwork, 
              SocketType.Stream, ProtocolType.IP);

Here in ProtocolType.IP there should be HTTP but HTTP option is not there.

This is a WinForms application.

Answer 1

HTTP isn't a protocol at that level - it's an application level protocol.

You don't get "an HTTP socket" - you typically get a TCP/IP socket and write HTTP data over that.

See the OSI model for more details about the network layers involved.

I don't know for sure whether the built-in HTTP client libraries in .NET support streaming requests... you'd probably want to turn buffering off and write to the request stream. See what that looks like at the socket level using something like WireShark .

Answer 2

The ProtocolType enumeration does not include HTTP. HTTP is part of the application layer in the OSI model. There has never been a concept of a "HTTP Socket". HTTP is encapsulated within TCP/IP. The ProtocolType enumeration refers to the transport protocol.

From MSDN on the ProtocolType enumeration ,

    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.

Answer 3

Look http://social.msdn.microsoft.com/forums/en-US/netfxnetcom/thread/7be22396-0f2a-4138-b47a-09d93894185b The first post shows how to send some bytes through a HTTP-Request. Adapted for your use:

byte[] data;
// ...
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(server);
request.ContentType = "application/octet-stream";
request.Method = "POST"; // I think, your data is too big for GET
request.ContentLength = data.Length;
try {
    Stream postStream = request.GetRequestStream();
    postStream.Write(data, 0, data.Length);
    postStream.Close();
} catch(Exception ex) {
    throw new Exception(ex.Message);
}