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