mirror of
https://github.com/oxen-io/lokinet
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9ddf7413af
- windivert was being set up *before* DNS is set up, so the DNS port was nullopt and thus we couldn't properly identify upstream DNS traffic. - close() doesn't close a socket on Windows, so the socket-bind-close approach to get a free UDP port wasn't actually closing, and thus unbound upstream constrained to the given port were completely failing. - The unbound thread was accessing the same shared_ptr instance as the outer code, which isn't thread-safe; changed it to copy a weak_ptr into the lambda instead. - Exclude upstream DNS traffic in the filter rather than capturing and reinjecting it.
22 lines
761 B
C++
22 lines
761 B
C++
#pragma once
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#include <memory>
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#include <string>
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#include <windows.h>
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#include <llarp/vpn/i_packet_io.hpp>
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namespace llarp::win32::WinDivert
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{
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/// format an ipv4 in host order to string such that a windivert filter spec can understand it
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std::string
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format_ip(uint32_t ip);
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/// create a packet interceptor that uses windivert.
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/// filter_spec describes the kind of traffic we wish to intercept.
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/// pass in a callable that wakes up the main event loop.
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/// we hide all implementation details from other compilation units to prevent issues with
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/// linkage that may arrise.
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std::shared_ptr<llarp::vpn::I_Packet_IO>
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make_interceptor(const std::string& filter_spec, std::function<void(void)> wakeup);
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} // namespace llarp::win32::WinDivert
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