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author | Florent Le Coz <louiz@louiz.org> | 2015-05-28 23:42:52 +0200 |
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committer | Florent Le Coz <louiz@louiz.org> | 2015-05-28 23:46:24 +0200 |
commit | e1a7114c8daa10589c830ce972cf461c3540111b (patch) | |
tree | 3b9fc79a881b252248d30c8e797bed13f131e90b /louloulibs/network/dns_handler.hpp | |
parent | 897b281e67dc82700db9fd9c2dedc5e01e5871ee (diff) | |
download | biboumi-e1a7114c8daa10589c830ce972cf461c3540111b.tar.gz biboumi-e1a7114c8daa10589c830ce972cf461c3540111b.tar.bz2 biboumi-e1a7114c8daa10589c830ce972cf461c3540111b.tar.xz biboumi-e1a7114c8daa10589c830ce972cf461c3540111b.zip |
louloulibs is directly included, instead of being a submodule
Because this is a nightmare to manage
Diffstat (limited to 'louloulibs/network/dns_handler.hpp')
m--------- | louloulibs | 0 | ||||
-rw-r--r-- | louloulibs/network/dns_handler.hpp | 62 |
2 files changed, 62 insertions, 0 deletions
diff --git a/louloulibs b/louloulibs deleted file mode 160000 -Subproject 0f3c1183e2bf0941ae2bffd3f31577bce4f3001 diff --git a/louloulibs/network/dns_handler.hpp b/louloulibs/network/dns_handler.hpp new file mode 100644 index 0000000..a515f52 --- /dev/null +++ b/louloulibs/network/dns_handler.hpp @@ -0,0 +1,62 @@ +#ifndef DNS_HANDLER_HPP_INCLUDED +#define DNS_HANDLER_HPP_INCLUDED + +#include <louloulibs.h> +#ifdef CARES_FOUND + +class TCPSocketHandler; +class Poller; +class DNSSocketHandler; + +# include <ares.h> +# include <memory> +# include <string> +# include <list> + +void on_hostname4_resolved(void* arg, int status, int, struct hostent* hostent); +void on_hostname6_resolved(void* arg, int status, int, struct hostent* hostent); + +/** + * Class managing DNS resolution. It should only be statically instanciated + * once in SocketHandler. It manages ares channel and calls various + * functions of that library. + */ + +class DNSHandler +{ +public: + DNSHandler(); + ~DNSHandler() = default; + void gethostbyname(const std::string& name, TCPSocketHandler* socket_handler, + int family); + /** + * Call ares_fds to know what fd needs to be watched by the poller, create + * or destroy DNSSocketHandlers depending on the result. + */ + void watch_dns_sockets(std::shared_ptr<Poller>& poller); + /** + * Destroy and stop watching all the DNS sockets. Then de-init the channel + * and library. + */ + void destroy(); + ares_channel& get_channel(); + + static DNSHandler instance; + +private: + /** + * The list of sockets that needs to be watched, according to the last + * call to ares_fds. DNSSocketHandlers are added to it or removed from it + * in the watch_dns_sockets() method + */ + std::list<std::unique_ptr<DNSSocketHandler>> socket_handlers; + ares_channel channel; + + DNSHandler(const DNSHandler&) = delete; + DNSHandler(DNSHandler&&) = delete; + DNSHandler& operator=(const DNSHandler&) = delete; + DNSHandler& operator=(DNSHandler&&) = delete; +}; + +#endif /* CARES_FOUND */ +#endif /* DNS_HANDLER_HPP_INCLUDED */ |