accept          

   Accepts a connection on a socket.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:

     int accept(int s, struct sockaddr *addr, int *addrlen); 

   _DECC_V4_SOURCE not defined:

     int accept(int s, struct sockaddr *addr, size_t *addrlen); 

bind            

   Binds a name to a socket.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:

     int bind(int s, struct sockaddr *name, int namelen); 

   _DECC_V4_SOURCE not defined:

     int bind(int s, const struct sockaddr *name, size_t namelen);
close           

   Closes a connection and deletes a socket descriptor.

   Syntax:

     #include  <unixio.h>

     int close(s);
connect         

   Initiates a connection on a socket.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:
 
     int connect(int s, struct sockaddr *name, int namelen); 

   _DECC_V4_SOURCE not defined:

     int connect(int s, const struct sockaddr *name, size_t namelen); 
decc$get_sdc    

   Returns the socket device channel associated with a socket
   descriptor for direct use with the DEC TCP/IP Services for 
   OpenVMS product (formerly the VMS/ULTRIX Connection). 
   vaxc$get_sdc is a synonym for decc$get_sdc. Either name 
   invokes the same routine.

   Syntax:
   
     #include <socket.h>

     short int decc$get_sdc(int s);

endhostent          

 Ends retrieval of network host entries and closes the network host
 file.

 Syntax:

    #include <netdb.h>

    void endhostent (void);

endnetent          

 Closes the networks database file.

 Syntax:

    #include <netdb.h>

    void endnetent (void);

getpeername     

   Returns the name of the connected peer.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:
   
     int getpeername(int s, struct sockaddr *name, int *namelen); 

   _DECC_V4_SOURCE not defined:

     int getpeername(int s, struct sockaddr *name, size_t *namelen); 

endprotoent          

 Closes the protocols database file.

 Syntax:

    #include <netdb.h>

    void endprotoent (void);

endservent          

 Closes the network services database file.

 Syntax:

    #include <netdb.h>

    void endservent (void);

gethostbyaddr   

   Searches the host database sequentially from the beginning of
   the database for a host record with a given address.

   Syntax:

     #include  <netdb.h>

     struct hostent *gethostbyaddr(char *addr, int len, int type);
gethostbyname   

   Searches the host database sequentially from the beginning of
   the database for a host record with a given name or alias.

   Syntax:

     #include  <netdb.h>

     struct hostent *gethostbyname(char *name);

gethostent          

 Opens the network host entry by name from the network host database
 file.

 Syntax:

    #include <netdb.h>

    struct hostent *gethostent (void);

gethostname     

   Returns the name currently associated to the host.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:

     int gethostname(char *name, int namelen);  

   _DECC_V4_SOURCE not defined:

     int gethostname(char *name, size_t namelen);  

getnetbyaddr    

   Searches the network database sequentially from the beginning
   of the database for a network record with a given address.

   Syntax:
     
     #include  <netdb.h>

     struct netent *getnetbyaddr(long net, int type);
getnetbyname    


   Searches the network database sequentially from the beginning
   of the database for a network record with a given name or alias.

   Syntax:

     #include  <netdb.h>

     struct netent *getnetbyname(char *name);
getnetent       

 Gets a network file entry from the networks database file.

 Syntax:

    #include <netdb.h>

    struct netent *getnetent (void);

getprotobyname  

   Searches the protocols database until a matching protocol name 
   is found or until an EOF is encountered.

   Syntax:

     #include <netdb.h>

     struct protoent *getprotobyname(char *name);
getprotobynumber

   Searches the protocols database until a matching protocol number
   is found or until an EOF is encountered.

   Syntax:

     #include <netdb.h>

     struct protoent *getprotobynumber(int *proto);

getprotoent          

 Gets a protocol database entry from the protocols database file.

 Syntax:

    #include <netdb.h>

    struct protoent *getprotonet (void);

getservbyname   

   Gets information on the named service from the network 
   services database. It searches the services database until 
   a matching service name is found or until an EOF is encountered.

   If a non-null protocol name is also supplied, searches must 
   also match the protocol.

   Syntax:

     #include <netdb.h>

     struct servent *getservbyname(char *name, char *proto);
getservbyport   

   Gets information on the specified port from the network 
   services database. It searches the services database until 
   a matching port is found or until an EOF is encountered.

   If a non-null protocol name is also supplied, searches must 
   also match the protocol.

   Syntax:

     #include <netdb.h>

     struct servent *getservbyport(int port, char *proto);

getservent          

 Gets a services file entry from the network services database file.

 Syntax:

    #include <netdb.h>

    struct servent *getservent (void);

getsockname     

   Returns the name associated with a socket.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:

     int getsockname(int s, struct sockaddr *name, int *namelen); 

   _DECC_V4_SOURCE not defined:

     int getsockname(int s, struct sockaddr *name, size_t *namelen); 
getsockopt      

   Returns the options set on a socket.

   Syntax:

     #include  <types.h>
     #include  <socket.h>

   _DECC_V4_SOURCE defined:

     int getsockopt(int s, int level, int optname, char *optval,
                     int *optlen); 

   _DECC_V4_SOURCE not defined:

     int getsockopt(int s, int level, int optname, void *optval,
                     size_t *optlen);

herror          

 Writes a message explaining a routine error.

 Syntax:

    #include <netdb.h>
    extern int sys_nerr;
    extern int h_errno;

    void herror (const char *string);

hostalias          

 Searches for host aliases associated with a name.

 Syntax:

    #include <types.h>
    #include <in.h>
    #include <namser.h>
    #include <resolv.h>

    char *hostalias (const char *name);

hstrerror          

 Accesses message explaining routine errors.

 Syntax:

    #include <string.h>

    char *hstrerror (int errnum);

htonl           

   Converts longwords from host to network byte order.

   Syntax:

     #include <in.h>

     unsigned long int htonl(unsigned long int hostlong);
htons           

   Converts short integers from host to network byte order.

   Syntax:

     #include <in.h>

     unsigned short int htons(unsigned short int hostshort);
inet_addr       

   Converts Internet addresses in text form into numeric (binary) 
   Internet addresses.

   Syntax:

     #include <in.h>
     #include <inet.h>

     int inet_addr(char *cp);
inet_lnaof      

   Returns the local network address portion of an Internet address.

   Syntax:

     #include <in.h>
     #include <inet.h>

     int inet_lnaof(struct in_addr in);
inet_makeaddr   

   Returns an Internet address given a network address and a
   local address on that network.

   Syntax:

     #include <in.h>
     #include <inet.h>

     struct in_addr inet_makeaddr(int net, int lna) ;
inet_netof      

   Returns the Internet network address portion of an Internet address.

   Syntax:

     #include <in.h>
     #include <inet.h>

     int inet_netof(struct in_addr in);
inet_network    

   Converts a text string representing an Internet network address 
   in the standard Internet "." notation into an Internet network 
   address in network byte order.

   Syntax:

     #include <in.h>
     #include <inet.h>

     int inet_network(char *cp);
inet_ntoa       

   Converts an Internet address into a text string representing
   the address in the standard Internet "." notation.

   Syntax:

     #include <in.h>
     #include <inet.h>

     char *inet_ntoa(struct in_addr in);

ioctl          

 Controls socket operations only.

 Syntax:

    #include <ioctl.h>

    int ioctl (int d, unsigned long request, void *arg);

listen          

   Sets the maximum limit of outstanding connection requests for
   a socket that is connection oriented.

   Syntax:

     int listen(int s, int backlog);
ntohl           

   Converts longwords from network to host byte order.

   Syntax:

     #include <in.h>

     unsigned long int ntohl(unsigned long int netlong) ;
ntohs           

   Converts short integers from network to host byte order.

   Syntax:

     #include <in.h>

     unsigned short int ntohs(unsigned short int netshort);
read            

   Reads bytes from a socket or file and places them in a buffer.

   Syntax:

     #include <unixio.h>

     int read(int d, void *buffer, int nbytes);
recv            

   Receives bytes from a connected socket and places them into a buffer.

   Syntax:

     #include <types.h>
     #include <socket.h>

   _DECC_V4_SOURCE defined:

     int recv(int s, char *buf, int len, int flags); 

   _DECC_V4_SOURCE not defined:

     ssize_t recv(int s, void *buf, size_t len, int flags); 
recvfrom        

   Receives bytes from a socket from any source.

   Syntax:

     #include <types.h>
     #include <socket.h>

   _DECC_V4_SOURCE defined:

     int recvfrom(int s, char *buf, int len, int flags, struct
                   sockaddr *from, int *fromlen);  
 
   _DECC_V4_SOURCE not defined:

     ssize_t recvfrom(int s, void *buf, size_t len, int flags, 
                       struct sockaddr *from, size_t *fromlen); 
recvmsg         

   Receives bytes on a socket and places them into scattered buffers.

   Syntax:

     #include <types.h>
     #include <socket.h>

     int recvmsg(int s, struct msghdr msg[],  int flags);
select          

   Allows you to poll or check a group of sockets for I/O
   activity. It can check what sockets are ready to be read or
   written, or what sockets have a pending exception.

   Syntax:

     #include <time.h>

   _DECC_V4_SOURCE defined:

      int select(int nfds, int *readfds, int *writefds, 
                  int *exceptfds, struct timeval *timeout); 

   _DECC_V4_SOURCE not defined:

      int select(int nfds, fd_set *readfds, fd_set *writefds, 
                  fd_set *exceptfds, struct timeval *timeout); 
send            

   Sends bytes through a socket to its connected peer.

   Syntax:

     #include <types.h>
     #include <socket.h>

   _DECC_V4_SOURCE defined:

     int send(int s, char *msg, int len, int flags); 

   _DECC_V4_SOURCE not defined:

     ssize_t send(int s, const void *msg, size_t len, int flags); 
sendmsg         

   Sends gathered bytes through a socket to any other socket.

   Syntax:

     #include <types.h>
     #include <socket.h>

     int sendmsg(int s, struct msghdr msg[],  int flags);
sendto          

   Sends bytes through a socket to any other socket.

   Syntax:

     #include <types.h>
     #include <socket.h>

   _DECC_V4_SOURCE defined:

     int sendto(int s, char *msg, int len, int flags, struct
                 sockaddr *to, int tolen); 

   _DECC_V4_SOURCE not defined:

     ssize_t sendto(int s, const void *msg, size_t len, int flags, 
                     const struct sockaddr *to, size_t tolen); 

sethostent          

 Opens, rewinds, and closes the network host database file.

 Syntax:

    #include <netdb.h>

    void sethostent (int stay_open);

setnetent           

 Opens, rewinds, or closes the networks database file.

 Syntax:

    #include <netdb.h>

    void setnetent (int stay_open);   

setprotoent          

 Opens, rewinds, or closes the protocols database file.

 Syntax:

    #include <netdb.h>

    void setprotoent (int stay_open);

setservent          

 Opens, rewinds, or closes the network services database.

 Syntax:

    #include <netdb.h>

    void setservent (int stay_open);

setsockopt      

   Sets options on a socket.

   Syntax:

     #include <types.h>
     #include <socket.h>

    _DECC_V4_SOURCE defined:

      int setsockopt(int s, int level, int optname, char *optval, 
                      int optlen);  

    _DECC_V4_SOURCE not defined:

      int setsockopt(int s, int level, int optname, const void *optval, 
                      size_t optlen);  
shutdown        

   Shuts down all or part of a bidirectional connection on a socket. 
   It can disallow further receives, further sends, or both.

   Syntax:

     #include <socket.h>

     int shutdown(int s, int how);

socket          

   Creates an endpoint for communication by returning a special
   kind of file descriptor called a socket descriptor, which is 
   associated with a DEC TCP/IP Services for OpenVMS socket device 
   channel.

   Syntax:

     #include <types.h>
     #include <socket.h>

     int socket(int af, int type, int protocol);

decc$socket_fd          

 Returns the socket descriptor associated with a Socket Device
 Channel for direct use with the Compaq C RTL.

 Syntax:

    #include <socket.h>

    int decc$socket_fd (int channel);

vaxc$get_sdc    

   Returns the socket device channel associated with a socket
   descriptor for direct use with the DEC TCP/IP Services for 
   OpenVMS product (formerly the VMS/ULTRIX Connection). 
   vaxc$get_sdc is a synonym for decc$get_sdc. Either name 
   invokes the same routine.

   Syntax:
   
     #include <socket.h>

     short int vaxc$get_sdc(int s);
write           

   Writes a buffer of data to a socket or file.

   Syntax:

     #include <unixio.h>

     int write(int d, void *buffer, int nbytes);