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feat: bind UDP socket to any local address/port and log local address in DomainConnectRequest

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MayaTheShy
2025-11-09 23:53:42 -05:00
parent f481fde096
commit 2cd0fb5cfd
1 changed files with 16 additions and 0 deletions
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16
src/OverteClient.cpp
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@@ -243,6 +243,16 @@ bool OverteClient::connect() {
m_udpFd = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (m_udpFd == -1) continue;
::fcntl(m_udpFd, F_SETFL, O_NONBLOCK);
// Bind to any local address/port so getsockname() works
sockaddr_in bindAddr{};
bindAddr.sin_family = AF_INET;
bindAddr.sin_addr.s_addr = INADDR_ANY; // 0.0.0.0
bindAddr.sin_port = 0; // Let OS choose port
if (::bind(m_udpFd, reinterpret_cast<sockaddr*>(&bindAddr), sizeof(bindAddr)) == 0) {
std::cout << "[OverteClient] UDP socket bound successfully" << std::endl;
}
std::memcpy(&m_udpAddr, rp->ai_addr, rp->ai_addrlen);
m_udpAddrLen = rp->ai_addrlen;
m_udpReady = true;
@@ -1262,8 +1272,14 @@ void OverteClient::sendDomainConnectRequest() {
auto* sin = reinterpret_cast<sockaddr_in*>(&localSs);
localIPv4 = ntohl(sin->sin_addr.s_addr);
localPort = ntohs(sin->sin_port);
std::cout << "[OverteClient] getsockname: " << ((localIPv4 >> 24) & 0xFF) << "."
<< ((localIPv4 >> 16) & 0xFF) << "." << ((localIPv4 >> 8) & 0xFF) << "."
<< (localIPv4 & 0xFF) << ":" << localPort << std::endl;
}
}
std::cout << "[OverteClient] Sending local address in DomainConnectRequest: "
<< ((localIPv4 >> 24) & 0xFF) << "." << ((localIPv4 >> 16) & 0xFF) << "."
<< ((localIPv4 >> 8) & 0xFF) << "." << (localIPv4 & 0xFF) << ":" << localPort << std::endl;
// Helper lambda to write QHostAddress (IPv4) in QDataStream format: [protocol:quint8=1][IPv4:quint32]
auto writeQHostAddressIPv4 = [&qs](uint32_t hostOrderIPv4){
// QDataStream for QHostAddress writes a protocol tag (quint8).