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INTERNET_DIAGNOSTIC_SOCKET_INFO structure (wininet.h)

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The INTERNET_DIAGNOSTIC_SOCKET_INFO structure is returned by the InternetQueryOption function when the INTERNET_OPTION_DIAGNOSTIC_SOCKET_INFO flag is passed to it together with a handle to an HTTP Request. The INTERNET_DIAGNOSTIC_SOCKET_INFO structure contains information about the socket associated with that HTTP Request.

Syntax

typedef struct {
  DWORD_PTR Socket;
  DWORD     SourcePort;
  DWORD     DestPort;
  DWORD     Flags;
} INTERNET_DIAGNOSTIC_SOCKET_INFO, *LPINTERNET_DIAGNOSTIC_SOCKET_INFO;

Members

Socket

Descriptor that identifies the socket associated with the specified HTTP Request.

SourcePort

The address of the port at which the HTTP Request and response was received.

DestPort

The address of the port at which the response was sent.

Flags

Value Meaning
IDSI_FLAG_KEEP_ALIVE
 Set if the connection is from the "keep-alive" pool.
IDSI_FLAG_SECURE
 Set if the HTTP Request is using a secure socket.
IDSI_FLAG_PROXY
 Set if a proxy is being used to reach the server.
IDSI_FLAG_TUNNEL
 Set if a proxy is being used to create a tunnel.

Remarks

Note  WinINet does not support server implementations. In addition, it should not be used from a service. For server implementations or services use Microsoft Windows HTTP Services (WinHTTP).
 

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Header wininet.h

See also

InternetQueryOption