v/vlib/net/address.v

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module net
// Addr represents an ip address
pub struct Addr {
addr C.sockaddr
len int
pub:
saddr string
port int
}
pub fn (a Addr) str() string {
return '${a.saddr}:${a.port}'
}
const (
max_ipv4_addr_len = 24
ipv4_addr_size = sizeof(C.sockaddr_in)
)
fn new_addr(addr C.sockaddr) ?Addr {
addr_len := if addr.sa_family == SocketFamily.inet {
sizeof(C.sockaddr)
} else {
// TODO NOOOOOOOOOOOO
0
}
// Convert to string representation
buf := []byte{ len: max_ipv4_addr_len, init: 0 }
$if windows {
res := C.WSAAddressToStringA(&addr, addr_len, C.NULL, buf.data, &buf.len)
if res != 0 {
socket_error(-1)?
}
} $else {
res := C.inet_ntop(SocketFamily.inet, &addr, buf.data, buf.len)
if res == 0 {
socket_error(-1)?
}
}
mut saddr := buf.bytestr()
hport := (&C.sockaddr_in(&addr)).sin_port
port := C.ntohs(hport)
$if windows {
// strip the port from the address string
saddr = saddr.split(':')[0]
}
return Addr {
addr int(addr_len) saddr port
}
}
pub fn resolve_addr(addr string, family SocketFamily, typ SocketType) ?Addr {
address, port := split_address(addr)?
mut hints := C.addrinfo{}
hints.ai_family = family
hints.ai_socktype = typ
hints.ai_flags = C.AI_PASSIVE
hints.ai_protocol = 0
hints.ai_addrlen = 0
hints.ai_canonname = C.NULL
hints.ai_addr = C.NULL
hints.ai_next = C.NULL
info := &C.addrinfo(0)
sport := '$port'
// This might look silly but is recommended by MSDN
$if windows {
socket_error(0-C.getaddrinfo(address.str, sport.str, &hints, &info))?
} $else {
x := C.getaddrinfo(address.str, sport.str, &hints, &info)
wrap_error(x)?
}
return new_addr(*info.ai_addr)
}