Inside Macintosh: Open Transport /

Chapter 8 - TCP/IP Services / TCP/IP Services Reference

Constants and Data Types

Internet Address Structure

You use the internet address structure when providing a TCP or UDP address to the Open Transport functions OTConnect, OTSndURequest, and OTBind.
You can use the OTInitInetAddress function (page 8-52) to fill in an internet address structure. The internet address structure is defined by the InetAddress data type.

struct InetAddress {
      OTAddressType  fAddressType;/* address type; always AF_INET */
      InetPort       fPort;      /* port number */
      InetHost       fHost;      /* host address (network byte order) */
      UInt8          fUnused[8]; /* reserved */
};

Field Description

fAddressType

The address type. The only possible value for this field is AF_INET, which identifies the TCP/IP protocol family.

fPort

The port number.

fHost

The IP address of the host in network byte order (that is, high-order byte first) in hexadecimal notation.

fUnused

Reserved.