DEC C
Run-Time Library Reference Manual for OpenVMS Systems

Appendix A
Appendix A	DEC C Socket Routine Reference
A.1	Porting Considerations
A.1.1	Calling an IPC Routine from an AST State
A.1.2	Calling from KERNEL or EXEC Modes
A.1.3	Event Flags
A.1.4	Suppressing DEC C Compilation Warnings
A.1.5	Header Files
A.2	DEC C Structures
A.3	Internet Protocols
A.3.1	Transmission Control Protocol
A.3.2	User Datagram Protocol
A.4	errno Values
A.5	h_errno Values
A.6	Relationship Between errno and h_errno
A.7	TCP/IP Interface Enhancements
A.8	Summary of Socket Routines
A.8.1	Basic Communication Routines
A.8.2	Auxiliary Communication Routines
A.8.3	h_errno Support Routines
A.8.4	Communication Support Routines
Command 453	accept
Command 454	bind
Command 455	close
Command 456	connect
Command 457	decc$get_sdc
Command 458	endhostent
Command 459	endnetent
Command 460	endprotoent
Command 461	endservent
Command 462	gethostaddr
Command 463	gethostbyaddr
Command 464	gethostbyname
Command 465	gethostent
Command 466	gethostname
Command 467	getnetbyaddr
Command 468	getnetbyname
Command 469	getnetent
Command 470	getpeername
Command 471	getprotobyname
Command 472	getprotobynumber
Command 473	getprotoent
Command 474	getservbyname
Command 475	getservbyport
Command 476	getservent
Command 477	getsockname
Command 478	getsockopt
Command 479	herror
Command 480	hstrerror
Command 481	hostalias
Command 482	htonl
Command 483	htons
Command 484	inet_addr
Command 485	inet_lnaof
Command 486	inet_makeaddr
Command 487	inet_netof
Command 488	inet_network
Command 489	inet_ntoa
Command 490	ioctl
Command 491	listen
Command 492	ntohl
Command 493	ntohs
Command 494	read
Command 495	recv
Command 496	recvfrom
Command 497	recvmsg
Command 498	select
Command 499	send
Command 500	sendmsg
Command 501	sendto
Command 502	sethostent
Command 503	setnetent
Command 504	setprotoent
Command 505	setservent
Command 506	setsockopt
Command 507	shutdown
Command 508	socket
Command 509	socket_fd
Command 510	vaxc$get_sdc
Command 511	write
A.9	Programming Examples
Appendix B
Appendix B	Version-Dependency Tables
Appendix C
Appendix C	Prototypes Duplicated to Non-Standard Headers
Index
Index
Examples
1-1	Differences Between Stream Mode and Record Mode
2-1	Output of the Conversion Specifications
2-2	Using the Standard I/O Functions
2-3	Using Wide Character I/O Functions
2-4	I/O Using File Descriptors and Pointers
3-1	Character-Classification Functions
3-2	Converting Double Values to an ASCII String
3-3	Changing Characters to and from Uppercase Letters
3-4	Concatenating Two Strings
3-5	Four Arguments to the strcspn Function
3-6	Using the <stdarg.h > Functions and Definitions
4-1	Suspending and Resuming Programs
5-1	Creating the Child Process
5-2	Passing Arguments to the Child Process
5-3	Checking the Status of Child Processes
5-4	Communicating Through a Pipe
6-1	A Curses Program
6-2	Manipulating Windows
6-3	Refreshing the Terminal Screen
6-4	Curses Predefined Variables
6-5	The Cursor Movement Functions
6-6	stdscr and Occluding Windows
7-1	Calculating and Verifying a Tangent Value
8-1	Allocating and Deallocating Memory for Structures
9-1	Accessing the User Name
9-2	Accessing Terminal Information
9-3	Manipulating the Default Directory
9-4	Printing the Date and Time
A-1	TCP/IP Server
A-2	TCP/IP Client
A-3	UDP/IP Server
A-4	UDP/IP Client
Figures
1-1	Linking with the DEC C RTL on OpenVMS Alpha Systems
1-2	I/O Interface from C Programs
1-3	Mapping Standard I/O and UNIX I/O to RMS
5-1	Communications Links Between Parent and Child Processes
6-1	An Example of the stdscr Window
6-2	Displaying Windows and Subwindows
6-3	Updating the Terminal Screen
6-4	An Example of the getch Macro
REF-1	Reading and Writing to a Pipe
Tables
1-1	Linking Conflicts
1-2	UNIX and OpenVMS File Specification Delimiters
1-3	Valid and Invalid UNIX and OpenVMS File Specifications
1-4	Feature Test Macros - Standards
1-5	Functions with Dual Implementations
1-6	Functions restricted to 32-bit pointers
1-7	Callbacks that Pass Only 32-Bit Pointers
2-1	I/O Functions and Macros
2-2	Optional Characters Between% (or% n$) and the Input Conversion Specifier
2-3	Conversion Specifiers for Formatted Input
2-4	Optional Characters Between% (or% n$) and the Output Conversion Specifier
2-5	Conversion Specifiers for Formatted Output
3-1	Character, String, and Argument-List Functions
3-2	Character-Classification Functions
3-3	ASCII Characters and the Character-Classification Functions
4-1	Error- and Signal-Handling Functions
4-2	The Error Code Symbolic Values
4-3	DEC C RTL Signals
4-4	DEC C RTL Signals and Corresponding OpenVMS VAX Exceptions (VAX ONLY)
4-5	DEC C RTL Signals and Corresponding OpenVMS Alpha Exceptions (ALPHA ONLY)
5-1	Subprocess Functions
6-1	Curses Functions and Macros
6-2	Curses Predefined Variables and#define Constants
7-1	Math Functions
8-1	Memory Allocation Functions
9-1	System Functions
10-1	Locale Categories
11-1	Date/Time Functions
11-2	Time-zone Filename Acronyms
1	REF Interpretation of the mode Argument
2	REF File Protection Values and Their Meanings
3	REF RMS Valid Keywords and Values
4	REF Member Names
5	REF Optional Characters in strfmon Conversion Specifications
6	REF strfmon Conversion Specifiers
7	REF Optional Elements of strftime Conversion Specifications
8	REF strftime Conversion Specifiers
9	REF strptime Conversion Specifications
10	REF SYSCONF Argument and Return Values
11	REF Time-Zone Initialization Rules
12	REF The vfork and fork Functions
13	REF Optional Elements of wcsftime Conversion Specifications
14	REF wcsftime Conversion Specifiers
1	A Structures Used by Socket Routines
2	A errno Values
3	A 4.4BSD Entry Points
4	A Basic Communication Routines
5	A Auxiliary Communication Routines
6	A Supported h_errno Routines
7	A Supported Communication Routines
1	B Functions Available on All OpenVMS Systems
2	B Functions Added in OpenVMS Version 6.2
3	B Functions Added in OpenVMS Version 7.0
4	B Functions Added in OpenVMS Alpha Version 7.0
1	C Duplicated Prototypes