mirror of
https://gitlab.com/d3tn/ud3tn.git
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3cd89eb6a5
...to align with the general decision to make DTN timestamps millisecond-based. See: #53 Signed-off-by: Felix Walter <felix.walter@d3tn.com>
88 lines
2 KiB
C
88 lines
2 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR Apache-2.0
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#include "agents/echo_agent.h"
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#include "platform/hal_time.h"
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#include "ud3tn/agent_util.h"
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#include "ud3tn/bundle_processor.h"
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#include "ud3tn/common.h"
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#include "ud3tn/config.h"
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#include "ud3tn/eid.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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struct echo_agent_params {
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bool is_ipn;
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const char *local_eid;
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uint64_t lifetime_ms;
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uint64_t last_bundle_timestamp_s;
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uint64_t last_bundle_sequence_number;
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};
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static uint64_t allocate_sequence_number(
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struct echo_agent_params *const config,
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const uint64_t time_s)
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{
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if (config->last_bundle_timestamp_s == time_s)
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return ++config->last_bundle_sequence_number;
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config->last_bundle_timestamp_s = time_s;
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config->last_bundle_sequence_number = 1;
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return 1;
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}
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static void callback(struct bundle_adu data, void *p, const void *bp_context)
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{
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struct echo_agent_params *const params = p;
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const uint64_t time_ms = hal_time_get_timestamp_ms();
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const uint64_t seqnum = allocate_sequence_number(
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params,
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time_ms
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);
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agent_create_forward_bundle_direct(
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bp_context,
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params->local_eid,
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data.protocol_version,
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params->is_ipn ? AGENT_ID_ECHO_IPN : AGENT_ID_ECHO_DTN,
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data.source,
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time_ms,
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seqnum,
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params->lifetime_ms,
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data.payload,
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data.length,
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0
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);
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// Pointer responsibility was taken by agent_create_forward_bundle
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data.payload = NULL;
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bundle_adu_free_members(data);
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}
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int echo_agent_setup(struct bundle_agent_interface *const bai,
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const uint64_t lifetime_ms)
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{
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struct echo_agent_params *params = malloc(
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sizeof(struct echo_agent_params)
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);
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params->is_ipn = get_eid_scheme(bai->local_eid) == EID_SCHEME_IPN;
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params->local_eid = bai->local_eid;
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params->lifetime_ms = lifetime_ms;
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params->last_bundle_timestamp_s = 0;
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params->last_bundle_sequence_number = 0;
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return bundle_processor_perform_agent_action(
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bai->bundle_signaling_queue,
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BP_SIGNAL_AGENT_REGISTER,
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params->is_ipn ? AGENT_ID_ECHO_IPN : AGENT_ID_ECHO_DTN,
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callback,
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params,
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false
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);
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}
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