netdb.h

netdb.h

Overview

Related Modules:

Description:

Provides functions and data structures related to network operations. For example, you can use the functions to send and receive network data, manage network addresses, and convert bytes.

Since:

1.0

Version:

1.0

Summary

Data Structures

Data Structure Name	Description
hostent	Describes the host name and address information.

Macros

Macro Name and Value	Description
h_addr h_addr_list[0]	Defines the first address in h_addr_list for backward compatibility.

Functions

Function Name	Description
setprotoent (int stayopen)	void Opens a connection to the database and sets the next entry to the first entry.
getprotoent (void)	struct protoent Retrieves the current protocol information.
getprotobyname (const char name)	struct protoent Retrieves the information about a specified protocol.
getprotobynumber (int num)	struct protoent Retrieves the information about a protocol with the specified number.
herror (const char msg)	void Prints error information.
hstrerror (int ecode)	const char Retrieves error information associated with the specified error number.