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Diffstat (limited to 'src/resolve/resolved-dns-transaction.h')
-rw-r--r-- | src/resolve/resolved-dns-transaction.h | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/src/resolve/resolved-dns-transaction.h b/src/resolve/resolved-dns-transaction.h deleted file mode 100644 index f6d539d315..0000000000 --- a/src/resolve/resolved-dns-transaction.h +++ /dev/null @@ -1,108 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2014 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -typedef struct DnsTransaction DnsTransaction; -typedef enum DnsTransactionState DnsTransactionState; - -enum DnsTransactionState { - DNS_TRANSACTION_NULL, - DNS_TRANSACTION_PENDING, - DNS_TRANSACTION_FAILURE, - DNS_TRANSACTION_SUCCESS, - DNS_TRANSACTION_NO_SERVERS, - DNS_TRANSACTION_TIMEOUT, - DNS_TRANSACTION_ATTEMPTS_MAX_REACHED, - DNS_TRANSACTION_INVALID_REPLY, - DNS_TRANSACTION_RESOURCES, - DNS_TRANSACTION_ABORTED, - _DNS_TRANSACTION_STATE_MAX, - _DNS_TRANSACTION_STATE_INVALID = -1 -}; - -#include "resolved-dns-scope.h" -#include "resolved-dns-packet.h" -#include "resolved-dns-question.h" -#include "resolved-dns-answer.h" - -struct DnsTransaction { - DnsScope *scope; - - DnsQuestion *question; - - DnsTransactionState state; - uint16_t id; - - bool initial_jitter; - - DnsPacket *sent, *received; - DnsAnswer *cached; - int cached_rcode; - - sd_event_source *timeout_event_source; - unsigned n_attempts; - - /* TCP connection logic, if we need it */ - DnsStream *stream; - - /* Queries this transaction is referenced by and that shall be - * notified about this specific transaction completing. */ - Set *queries; - - /* Zone items this transaction is referenced by and that shall - * be notified about completion. */ - Set *zone_items; - - unsigned block_gc; - - LIST_FIELDS(DnsTransaction, transactions_by_scope); -}; - -int dns_transaction_new(DnsTransaction **ret, DnsScope *s, DnsQuestion *q); -DnsTransaction* dns_transaction_free(DnsTransaction *t); - -void dns_transaction_gc(DnsTransaction *t); -int dns_transaction_go(DnsTransaction *t); - -void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p); -void dns_transaction_complete(DnsTransaction *t, DnsTransactionState state); - -const char* dns_transaction_state_to_string(DnsTransactionState p) _const_; -DnsTransactionState dns_transaction_state_from_string(const char *s) _pure_; - -/* After how much time to repeat classic DNS requests */ -#define DNS_TRANSACTION_TIMEOUT_USEC (5 * USEC_PER_SEC) - -/* After how much time to repeat LLMNR requests, see RFC 4795 Section 7 */ -#define LLMNR_TRANSACTION_TIMEOUT_USEC (1 * USEC_PER_SEC) - -/* LLMNR Jitter interval, see RFC 4795 Section 7 */ -#define LLMNR_JITTER_INTERVAL_USEC (100 * USEC_PER_MSEC) - -/* Maximum attempts to send DNS requests, across all DNS servers */ -#define DNS_TRANSACTION_ATTEMPTS_MAX 8 - -/* Maximum attempts to send LLMNR requests, see RFC 4795 Section 2.7 */ -#define LLMNR_TRANSACTION_ATTEMPTS_MAX 3 - -#define TRANSACTION_TIMEOUT_USEC(p) (p == DNS_PROTOCOL_LLMNR ? LLMNR_TRANSACTION_TIMEOUT_USEC : DNS_TRANSACTION_TIMEOUT_USEC) -#define TRANSACTION_ATTEMPTS_MAX(p) (p == DNS_PROTOCOL_LLMNR ? LLMNR_TRANSACTION_ATTEMPTS_MAX : DNS_TRANSACTION_ATTEMPTS_MAX) |