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https://github.com/wpilibsuite/allwpilib
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e32499c546
This is a libuv-based parallel, repeating TCP connector for making multiple parallel DNS resolution and TCP connection attempts to a network server.
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// Copyright (c) FIRST and other WPILib contributors.
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// Open Source Software; you can modify and/or share it under the terms of
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// the WPILib BSD license file in the root directory of this project.
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#include <cstdio>
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#include "wpi/EventLoopRunner.h"
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#include "wpi/Logger.h"
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#include "wpi/ParallelTcpConnector.h"
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#include "wpi/uv/Error.h"
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#include "wpi/uv/Tcp.h"
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namespace uv = wpi::uv;
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static void logfunc(unsigned int level, const char* file, unsigned int line,
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const char* msg) {
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std::fprintf(stderr, "(%d) %s:%d: %s\n", level, file, line, msg);
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}
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int main() {
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wpi::Logger logger{logfunc, 0};
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// Kick off the event loop on a separate thread
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wpi::EventLoopRunner loop;
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std::shared_ptr<wpi::ParallelTcpConnector> connect;
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loop.ExecAsync([&](uv::Loop& loop) {
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connect = wpi::ParallelTcpConnector::Create(
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loop, uv::Timer::Time{2000}, logger, [&](uv::Tcp& tcp) {
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std::fputs("Got connection, accepting!\n", stdout);
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tcp.StartRead();
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connect->Succeeded(tcp);
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tcp.end.connect([&] {
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std::fputs("TCP connection ended, disconnecting!\n", stdout);
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tcp.Close();
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connect->Disconnected();
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});
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tcp.error.connect([&](uv::Error) {
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std::fputs("TCP error, disconnecting!\n", stdout);
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connect->Disconnected();
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});
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});
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connect->SetServers({{{"roborio-294-frc.local", 8080},
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{"roborio-294-frc.frc-field.local", 8080},
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{"10.2.94.2", 8080},
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{"127.0.0.1", 8080}}});
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});
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// wait for a keypress to terminate
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std::getchar();
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}
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