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authorVasudev Kamath <vasudev@copyninja.info>2016-10-23 21:09:40 +0530
committerVasudev Kamath <vasudev@copyninja.info>2016-10-23 21:09:40 +0530
commiteda4b75b1cff83336e87da90efca9fd6b4ced2c7 (patch)
tree491317ce50b5d19bc434ccc4b448d1bc70520177 /louloulibs/network/dns_socket_handler.hpp
parent716c40e4ec45f8d538695225f4f06d541d959084 (diff)
parent0f14fe83ef53b08bd8fa09670c82f4996c329bdc (diff)
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New upstream version 3.0upstream/3.0
Diffstat (limited to 'louloulibs/network/dns_socket_handler.hpp')
-rw-r--r--louloulibs/network/dns_socket_handler.hpp49
1 files changed, 49 insertions, 0 deletions
diff --git a/louloulibs/network/dns_socket_handler.hpp b/louloulibs/network/dns_socket_handler.hpp
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+++ b/louloulibs/network/dns_socket_handler.hpp
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+#pragma once
+
+#include <louloulibs.h>
+#ifdef CARES_FOUND
+
+#include <network/socket_handler.hpp>
+#include <ares.h>
+
+/**
+ * Manage a socket returned by ares_fds. We do not create, open or close the
+ * socket ourself: this is done by c-ares. We just call ares_process_fd()
+ * with the correct parameters, depending on what can be done on that socket
+ * (Poller reported it to be writable or readeable)
+ */
+
+class DNSHandler;
+
+class DNSSocketHandler: public SocketHandler
+{
+public:
+ explicit DNSSocketHandler(std::shared_ptr<Poller> poller, DNSHandler& handler, const socket_t socket);
+ ~DNSSocketHandler() = default;
+ DNSSocketHandler(const DNSSocketHandler&) = delete;
+ DNSSocketHandler(DNSSocketHandler&&) = delete;
+ DNSSocketHandler& operator=(const DNSSocketHandler&) = delete;
+ DNSSocketHandler& operator=(DNSSocketHandler&&) = delete;
+
+ /**
+ * Just call dns_process_fd, c-ares will do its work of send()ing or
+ * recv()ing the data it wants on that socket.
+ */
+ void on_recv() override final;
+ void on_send() override final;
+ /**
+ * Do nothing, because we are always considered to be connected, since the
+ * connection is done by c-ares and not by us.
+ */
+ void connect() override final;
+ /**
+ * Always true, see the comment for connect()
+ */
+ bool is_connected() const override final;
+ void remove_from_poller();
+
+private:
+ DNSHandler& handler;
+};
+
+#endif // CARES_FOUND