[wpinet] Move network portions of wpiutil into new wpinet library (#4077)

2026-06-29 02:21:44 +00:00 · 2022-05-07 10:54:14 -07:00
parent b33715db15
commit d673ead481
327 changed files with 1783 additions and 1179 deletions
--- a/wpinet/examples/webserver/webserver.cpp
+++ b/wpinet/examples/webserver/webserver.cpp
@@ -0,0 +1,88 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#include <cstdio>
+
+#include <fmt/format.h>
+
+#include "wpinet/EventLoopRunner.h"
+#include "wpinet/HttpServerConnection.h"
+#include "wpinet/UrlParser.h"
+#include "wpinet/uv/Loop.h"
+#include "wpinet/uv/Tcp.h"
+
+namespace uv = wpi::uv;
+
+class MyHttpServerConnection : public wpi::HttpServerConnection {
+ public:
+  explicit MyHttpServerConnection(std::shared_ptr<uv::Stream> stream)
+      : HttpServerConnection(stream) {}
+
+ protected:
+  void ProcessRequest() override;
+};
+
+void MyHttpServerConnection::ProcessRequest() {
+  fmt::print(stderr, "HTTP request: '{}'\n", m_request.GetUrl());
+  wpi::UrlParser url{m_request.GetUrl(),
+                     m_request.GetMethod() == wpi::HTTP_CONNECT};
+  if (!url.IsValid()) {
+    // failed to parse URL
+    SendError(400);
+    return;
+  }
+
+  std::string_view path;
+  if (url.HasPath()) {
+    path = url.GetPath();
+  }
+  fmt::print(stderr, "path: \"{}\"\n", path);
+
+  std::string_view query;
+  if (url.HasQuery()) {
+    query = url.GetQuery();
+  }
+  fmt::print(stderr, "query: \"{}\"\n", query);
+
+  const bool isGET = m_request.GetMethod() == wpi::HTTP_GET;
+  if (isGET && path == "/") {
+    // build HTML root page
+    SendResponse(200, "OK", "text/html",
+                 "<html><head><title>WebServer Example</title></head>"
+                 "<body><p>This is an example root page from the webserver."
+                 "</body></html>");
+  } else {
+    SendError(404, "Resource not found");
+  }
+}
+
+int main() {
+  // Kick off the event loop on a separate thread
+  wpi::EventLoopRunner loop;
+  loop.ExecAsync([](uv::Loop& loop) {
+    auto tcp = uv::Tcp::Create(loop);
+
+    // bind to listen address and port
+    tcp->Bind("", 8080);
+
+    // when we get a connection, accept it and start reading
+    tcp->connection.connect([srv = tcp.get()] {
+      auto tcp = srv->Accept();
+      if (!tcp) {
+        return;
+      }
+      std::fputs("Got a connection\n", stderr);
+      auto conn = std::make_shared<MyHttpServerConnection>(tcp);
+      tcp->SetData(conn);
+    });
+
+    // start listening for incoming connections
+    tcp->Listen();
+
+    std::fputs("Listening on port 8080\n", stderr);
+  });
+
+  // wait for a keypress to terminate
+  std::getchar();
+}