5. sockinetaddr Class

Class sockinetaddr is derived from sockAddr declared in <sockstream.h> and from sockaddr_in declared in <netinet/in.h>. Always use a sockinetaddr object for an address with inet domain of sockets. See section 2.4 Establishing connections.

In what follows,

• adr denotes an inet address in host byte order and is of type unsigned long
• serv denotes a service like "nntp" and is of type char*
• proto denotes a protocol like "tcp" and is of type char*
• thostname is of type char* and denotes the name of a host like "kelvin.acc.virginia.edu" or "128.143.24.31".
• portno denotes a port in host byte order and is of type int

sockinetaddr sina

Constructs a sockinetaddr object sina with default address INADDR_ANY and default port number 0.

sockinetaddr sina(adr, portno)

Constructs a sockinetaddr object sina setting inet address to adr and the port number to portno. portno defaults to 0.

sockinetaddr sina(adr, serv, proto)

Constructs a sockinetaddr object sina setting inet address to adr and the port number corresponding to the service serv and the protocol proto. The protocol defaults to "tcp".

sockinetaddr sina(thostname, portno)

Constructs a sockinetaddr object sina setting inet address to the address of thostname and the port number to portno. portno defaults to 0.

sockinetaddr sina(thostname, serv, proto)

Constructs a sockinetaddr object sina setting inet address to the address of thostname and the port number corresponding to the service serv and the protocol proto. The protocol defaults to "tcp".

void* a = sina

returns the address of the sockaddr_in part of sockinetaddr object sina as void*.

int sz = sina.size()

returns the sizeof sockaddr_in part of sockinetaddr object sina.

int af = sina.family()

returns sockinetbuf::af_inet if all is well.

int pn = sina.getport()

returns the port number of the sockinetaddr object sina in host byte order.

const char* hn = getthostname()

returns the host name of the sockinetaddr object sina.