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Implement best-effort forwarding for Wake-on-LAN

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This commit is contained in:
Cameron Gutman
2018-11-09 17:06:31 -08:00
parent 5aea5aedab
commit 732b430da8
2 changed files with 147 additions and 11 deletions
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miss/pcp.cpp
+13 -2
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@@ -109,7 +109,7 @@ static void populateAddressFromSockAddr(PSOCKADDR_STORAGE sockAddr, unsigned cha
}
}
bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE pcpAddr, int pcpAddrLen, int proto, int port, bool enable)
bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE pcpAddr, int pcpAddrLen, int proto, int port, bool enable, bool indefinite)
{
SOCKET sock;
PCP_MAP_REQUEST reqMsg;
@@ -120,6 +120,17 @@ bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE
PCP_MAP_RESPONSE hdr;
char buf[1024];
} resp;
int lifetime;
if (!enable) {
lifetime = 0;
}
else if (indefinite) {
lifetime = 604800; // 1 week
}
else {
lifetime = 3600;
}
assert(localAddr->ss_family == pcpAddr->ss_family);
@@ -152,7 +163,7 @@ bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE
reqMsg = {};
reqMsg.hdr.version = PCP_VERSION;
reqMsg.hdr.opcode = OPCODE_MAP_REQUEST;
reqMsg.hdr.lifetime = htonl(enable ? 3600 : 0);
reqMsg.hdr.lifetime = htonl(lifetime);
populateAddressFromSockAddr(localAddr, reqMsg.hdr.localAddress);
reqMsg.protocol = proto;