added net module

2025-06-27 15:19:25 +02:00
parent acd30afe6f
commit cd61ac7f00
39 changed files with 4599 additions and 12 deletions
@@ -0,0 +1,115 @@
+#ifndef MATADOR_ADDRESS_RESOLVER_HPP
+#define MATADOR_ADDRESS_RESOLVER_HPP
+
+#include "matador/net/export.hpp"
+#include "matador/net/peer.hpp"
+#include "matador/net/error.hpp"
+
+#include <vector>
+
+namespace matador {
+/// @cond MATADOR_DEV
+class tcp;
+class udp;
+
+namespace detail {
+
+template < class P >
+int determine_socktype();
+
+template <>
+OOS_NET_API int determine_socktype<tcp>();
+
+template <>
+OOS_NET_API int determine_socktype<udp>();
+
+template < class P >
+void initialize_hints(struct addrinfo &hints, int flags) {
+  memset(&hints,0,sizeof(hints));
+  hints.ai_family = AF_UNSPEC;
+  hints.ai_socktype = determine_socktype<P>();
+  hints.ai_protocol = 0;
+  hints.ai_flags = flags;
+}
+/// @endcond
+}
+
+/**
+ * The address resolver resolves a given host and port
+ * to a peer object representing the given address
+ *
+ * @tparam P Type of protocol
+ */
+template < class P >
+class address_resolver
+{
+public:
+  typedef typename P::peer peer; /**< Shortcut to peer type */
+
+  /**
+   * Default constructor
+   */
+  address_resolver() = default;
+
+  /**
+   * Resolves the given host and port to a list
+   * of valid peers representing the ip addresses
+   * of the host either in IPv4 or IPv6 format
+   *
+   * @param hostname Hostname to resolve
+   * @param port Port to resolve
+   * @return A list of peers representing the host and port
+   */
+  std::vector<peer> resolve(const std::string &hostname, const std::string &port);
+
+  /**
+   * Resolves the given host and port to a list
+   * of valid peers representing the ip addresses
+   * of the host either in IPv4 or IPv6 format
+   *
+   * @param hostname Hostname to resolve
+   * @param port Port to resolve
+   * @return A list of peers representing the host and port
+   */
+  std::vector<peer> resolve(const char *hostname, const char *port);
+
+};
+
+/// @cond MATADOR_DEV
+template<class P>
+std::vector<typename address_resolver<P>::peer> address_resolver<P>::resolve(const std::string &hostname, const std::string &port)
+{
+  return resolve(hostname.c_str(), port.c_str());
+}
+
+template < class P >
+std::vector<typename address_resolver<P>::peer> address_resolver<P>::resolve(const char *hostname, const char *port)
+{
+  struct addrinfo hints = {};
+  detail::initialize_hints<P>(hints, AI_PASSIVE);
+  struct addrinfo* res = nullptr;
+  struct addrinfo* head = nullptr;
+  int err = getaddrinfo(hostname, port, &hints, &res);
+
+  if (err != 0) {
+    detail::throw_logic_error_with_gai_errno("error on getaddrinfo: %s", err);
+  }
+
+  head = res;
+  std::vector<peer> peers;
+  do {
+
+    if (res->ai_family == PF_INET) {
+      peers.push_back(peer(address(*(struct sockaddr_in*)res->ai_addr)));
+    } else if (res->ai_family == PF_INET6) {
+      peers.push_back(peer(address(*(struct sockaddr_in6*)res->ai_addr)));
+    } // else -> not supported
+  } while ( (res = res->ai_next) != nullptr);
+
+  freeaddrinfo(head);
+
+  return peers;
+}
+/// @endcond
+}
+#endif //MATADOR_ADDRESS_RESOLVER_HPP