Add HTTP support and update checking

code/cpp-httplib-0.19.0/example/server.cc

@@ -0,0 +1,113 @@
+//
+//  sample.cc
+//
+//  Copyright (c) 2019 Yuji Hirose. All rights reserved.
+//  MIT License
+//
+
+#include <chrono>
+#include <cstdio>
+#include <httplib.h>
+
+#define SERVER_CERT_FILE "./cert.pem"
+#define SERVER_PRIVATE_KEY_FILE "./key.pem"
+
+using namespace httplib;
+
+std::string dump_headers(const Headers &headers) {
+  std::string s;
+  char buf[BUFSIZ];
+
+  for (auto it = headers.begin(); it != headers.end(); ++it) {
+    const auto &x = *it;
+    snprintf(buf, sizeof(buf), "%s: %s\n", x.first.c_str(), x.second.c_str());
+    s += buf;
+  }
+
+  return s;
+}
+
+std::string log(const Request &req, const Response &res) {
+  std::string s;
+  char buf[BUFSIZ];
+
+  s += "================================\n";
+
+  snprintf(buf, sizeof(buf), "%s %s %s", req.method.c_str(),
+           req.version.c_str(), req.path.c_str());
+  s += buf;
+
+  std::string query;
+  for (auto it = req.params.begin(); it != req.params.end(); ++it) {
+    const auto &x = *it;
+    snprintf(buf, sizeof(buf), "%c%s=%s",
+             (it == req.params.begin()) ? '?' : '&', x.first.c_str(),
+             x.second.c_str());
+    query += buf;
+  }
+  snprintf(buf, sizeof(buf), "%s\n", query.c_str());
+  s += buf;
+
+  s += dump_headers(req.headers);
+
+  s += "--------------------------------\n";
+
+  snprintf(buf, sizeof(buf), "%d %s\n", res.status, res.version.c_str());
+  s += buf;
+  s += dump_headers(res.headers);
+  s += "\n";
+
+  if (!res.body.empty()) { s += res.body; }
+
+  s += "\n";
+
+  return s;
+}
+
+int main(void) {
+#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
+  SSLServer svr(SERVER_CERT_FILE, SERVER_PRIVATE_KEY_FILE);
+#else
+  Server svr;
+#endif
+
+  if (!svr.is_valid()) {
+    printf("server has an error...\n");
+    return -1;
+  }
+
+  svr.Get("/", [=](const Request & /*req*/, Response &res) {
+    res.set_redirect("/hi");
+  });
+
+  svr.Get("/hi", [](const Request & /*req*/, Response &res) {
+    res.set_content("Hello World!\n", "text/plain");
+  });
+
+  svr.Get("/slow", [](const Request & /*req*/, Response &res) {
+    std::this_thread::sleep_for(std::chrono::seconds(2));
+    res.set_content("Slow...\n", "text/plain");
+  });
+
+  svr.Get("/dump", [](const Request &req, Response &res) {
+    res.set_content(dump_headers(req.headers), "text/plain");
+  });
+
+  svr.Get("/stop",
+          [&](const Request & /*req*/, Response & /*res*/) { svr.stop(); });
+
+  svr.set_error_handler([](const Request & /*req*/, Response &res) {
+    const char *fmt = "<p>Error Status: <span style='color:red;'>%d</span></p>";
+    char buf[BUFSIZ];
+    snprintf(buf, sizeof(buf), fmt, res.status);
+    res.set_content(buf, "text/html");
+  });
+
+  svr.set_logger([](const Request &req, const Response &res) {
+    printf("%s", log(req, res).c_str());
+  });
+
+  svr.listen("localhost", 8080);
+
+  return 0;
+}