ipsec_portof (3) - Linux Man Pages
ipsec_portof: get port field of an ip_address, set port field of an ip_address, get pointer to internal sockaddr of an ip_address, get length of internal sockaddr of an ip_address
NAMEipsec_portof, ipsec_setportof, ipsec_sockaddrof, ipsec_sockaddrlenof - get port field of an ip_address, set port field of an ip_address, get pointer to internal sockaddr of an ip_address, get length of internal sockaddr of an ip_address
DESCRIPTIONThe <libreswan.h> internal type ip_address contains one of the sockaddr types internally. Reliance on this feature is discouraged, but it may occasionally be necessary. These functions provide low-level tools for this purpose.
Portof and setportof respectively read and write the port-number field of the internal sockaddr. The values are in network byte order.
Sockaddrof returns a pointer to the internal sockaddr, for passing to other functions.
DIAGNOSTICSPortof returns -1, sockaddrof returns NULL, and sockaddrlenof returns 0 if an unknown address family is found within the ip_address.
HISTORYWritten for the FreeS/WAN project by Henry Spencer.
BUGSThese functions all depend on low-level details of the ip_address type, which are in principle subject to change. Avoid using them unless really necessary.