Function PCPUnwrapAddress

src/common/pcp.cpp:209–221

Unwrap PCP-encoded address according to RFC6887.

//! Unwrap PCP-encoded address according to RFC6887.
CNetAddr PCPUnwrapAddress(std::span<const uint8_t> wrapped_addr)
{
    Assume(wrapped_addr.size() == ADDR_IPV6_SIZE);
    if (util::HasPrefix(wrapped_addr, IPV4_IN_IPV6_PREFIX)) {
        struct in_addr addr4;
        std::memcpy(&addr4, wrapped_addr.data() + IPV4_IN_IPV6_PREFIX.size(), ADDR_IPV4_SIZE);
        return CNetAddr(addr4);
    } else {
        struct in6_addr addr6;
        std::memcpy(&addr6, wrapped_addr.data(), ADDR_IPV6_SIZE);
        return CNetAddr(addr6);
    }
}

//! PCP or NAT-PMP send-receive loop.
std::optional<std::vector<uint8_t>> PCPSendRecv(Sock &sock, const std::string &protocol, std::span<const uint8_t> request, int num_tries,