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Block attempts to connect to the client (#10589)

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A Minetest peer initiates a connection by sending a packet with an invalid peer_id, for whatever reason the code for doing this ran on both the client and the server meaning you could connect to a client if you knew what the address:port tuple it was listening on.
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red-001 2020-11-02 21:21:03 +00:00 • committed by GitHub
parent 9c9344ceb3
commit 0abb3e89fa
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3 changed files with 10 additions and 2 deletions
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2
src/network/connection.cpp
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@ -1566,7 +1566,7 @@ void Connection::sendAck(session_t peer_id, u8 channelnum, u16 seqnum)
UDPPeer* Connection::createServerPeer(Address& address)
{
if (getPeerNoEx(PEER_ID_SERVER) != 0)
if (ConnectedToServer())
{
throw ConnectionException("Already connected to a server");
}