mirror of
https://github.com/matrix-construct/construct
synced 2024-12-30 17:34:04 +01:00
83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_M_FED_WELL_KNOWN_H
|
|
|
|
/// well-known for server name resolution.
|
|
///
|
|
/// This is a future-based interface. It performs local caching in the !dns
|
|
/// room as well as conducting network requests. The cache is queried on the
|
|
/// callers ircd::ctx and valid results cheaply return an already-satisfied
|
|
/// future. In the case of expired or missing results, a request structure is
|
|
/// allocated and managed internally and an unsatisfied future is returned;
|
|
/// an internal worker will resolve the promise asynchronously.
|
|
///
|
|
namespace ircd::m::fed::well_known
|
|
{
|
|
struct request;
|
|
struct opts;
|
|
|
|
// Primary query interface
|
|
ctx::future<string_view>
|
|
get(const mutable_buffer &out, const string_view &name, const opts &);
|
|
|
|
extern conf::item<seconds> cache_max;
|
|
extern conf::item<seconds> cache_error;
|
|
extern conf::item<seconds> cache_default;
|
|
}
|
|
|
|
/// Options used for resolving well-known.
|
|
struct ircd::m::fed::well_known::opts
|
|
{
|
|
/// Whether to check the cache before making any request.
|
|
bool cache_check {true};
|
|
|
|
/// Allow expired cache results to be returned without making any refresh.
|
|
bool expired {false};
|
|
|
|
/// Allow a query to be made to a remote.
|
|
bool request {true};
|
|
|
|
/// Whether to cache the result of any request.
|
|
bool cache_result {true};
|
|
};
|
|
|
|
/// Internal request structure; do not instantiate or manage manually. The
|
|
/// request::list allows traversal of all requests and observation of their
|
|
/// state.
|
|
struct ircd::m::fed::well_known::request
|
|
:instance_list<request>
|
|
{
|
|
static const string_view path, type;
|
|
static const server::request::opts sopts;
|
|
static conf::item<size_t> redirects_max;
|
|
static conf::item<seconds> timeout;
|
|
static ctx::mutex mutex;
|
|
static uint64_t id_ctr;
|
|
|
|
mutable_buffer out; // only safe if promise valid
|
|
string_view target;
|
|
well_known::opts opts;
|
|
uint64_t id {++id_ctr};
|
|
system_point expires;
|
|
ctx::promise<string_view> promise;
|
|
unique_mutable_buffer carry;
|
|
rfc3986::uri uri;
|
|
server::request req;
|
|
http::code code {0};
|
|
http::response::head head;
|
|
string_view location;
|
|
size_t redirects {0};
|
|
json::object response;
|
|
json::string m_server;
|
|
char tgtbuf[2][rfc3986::REMOTE_BUFSIZE];
|
|
char buf[15_KiB];
|
|
};
|