#define _POSIX_C_SOURCE 200809L
#include "dat_session.h"
#include "sleep.h"
#include "sleep_crypto.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>

typedef struct send_capture {
	uint8_t peer[DAT_PEER_ID_BYTES];
	uint8_t frame[4096];
	size_t length;
	uint8_t history[32][4096];
	size_t history_length[32];
	unsigned calls;
} send_capture_t;

static int capture_send(void *context, const uint8_t peer_id[DAT_PEER_ID_BYTES],
		       const uint8_t *frame, size_t length)
{
	send_capture_t *capture = context;
	assert(length <= sizeof(capture->frame));
	memcpy(capture->peer, peer_id, sizeof(capture->peer));
	memcpy(capture->frame, frame, length);
	capture->length = length;
	if (capture->calls < 32) {
		memcpy(capture->history[capture->calls], frame, length);
		capture->history_length[capture->calls] = length;
	}
	capture->calls++;
	return 0;
}

static void count_peer(void *context, const dat_session_peer_t *peer)
{
	unsigned *count = context;
	assert(peer->state == DAT_SESSION_PEER_DISCOVERED);
	(*count)++;
}

static void stream_transfer(dat_session_t *receiver,
			   const uint8_t peer_id[DAT_PEER_ID_BYTES],
			   int source_fd, int receiver_fd,
			   const uint8_t *frame, size_t frame_len)
{
	size_t sent = 0, received = 0;
	uint8_t incoming[8192];
	while (sent < frame_len) {
		ssize_t n = write(source_fd, frame + sent, frame_len - sent);
		assert(n > 0);
		sent += (size_t)n;
	}
	while (received < frame_len) {
		ssize_t n = read(receiver_fd, incoming + received, frame_len - received);
		assert(n > 0);
		received += (size_t)n;
	}
	assert(dat_session_receive(receiver, peer_id, incoming, received) == 0);
}

#ifndef DAT_LEGACY_HYPERCORE
static int count_poll(void *context, int timeout_ms)
{
	unsigned *count = context;
	assert(timeout_ms == 0);
	(*count)++;
	return 0;
}
#endif

#ifdef DAT_LEGACY_HYPERCORE
static void legacy_session_handshake(void)
{
	cesspool_t pool;
	dat_session_t session;
	sleep_feed_t metadata, content;
	sleep_keypair_t metadata_keys, content_keys;
	send_capture_t capture;
	cesspool_peer_t discovered;
	dat_session_peer_t *peer;
	dat_feed_open_t feed;
	dat_handshake_t handshake, decoded;
	dat_wire_message_t wire;
	uint8_t archive_key[32] = {1}, local_id[32] = {2}, remote_id[32] = {3};
	uint8_t remote_nonce[24] = {4}, payload[256], encoded[512], plain[512];
	uint8_t frame[512];
	size_t payload_len, encoded_len, content_frame_len, frame_len, consumed;
	unsigned discovered_count = 0;
	char feed_dir[] = "/tmp/datgpt-v6-XXXXXX";
	memset(&capture, 0, sizeof(capture));
	assert(mkdtemp(feed_dir) != NULL);
	assert(sleep_gen_keypair(&metadata_keys) == 0);
	assert(sleep_gen_keypair(&content_keys) == 0);
	assert(sleep_feed_open(&metadata, feed_dir, "metadata", &metadata_keys) == 0);
	assert(sleep_feed_open(&content, feed_dir, "content", &content_keys) == 0);
	assert(cesspool_init(&pool, local_id) == 0);
	assert(cesspool_listen(&pool, "127.0.0.1", 0) == 0);
	assert(cesspool_add_bootstrap(&pool, "127.0.0.1", 9) == 0);
	assert(dat_session_init(&session, &pool, archive_key, local_id, pool.port,
				&metadata, metadata_keys.pubkey, &content,
				content_keys.pubkey, capture_send, &capture) == 0);
	assert(dat_session_set_peer_callback(&session, count_peer, &discovered_count) == 0);
	assert(dat_session_start(&session, 1, 1) == 0);
	memset(&discovered, 0, sizeof(discovered));
	memcpy(discovered.public_key, remote_id, 32);
	memcpy(discovered.discovery_topic, session.discovery_topic, 32);
	discovered.discovered = 1;
	assert(dat_session_peer_discovered(&session, &discovered) == 0);
	assert(discovered_count == 1);
	assert(dat_session_peer_secure(&session, remote_id, 1) == 0);
	assert(capture.calls == 3);
	peer = dat_session_find_peer(&session, remote_id);
	assert(peer && peer->tx_stream_encrypted && peer->tx_offset > 0);
	assert(dat_wire_decode(&wire, capture.history[0], capture.history_length[0], &consumed) == 0);
	assert(wire.channel == 0 && wire.type == DAT_MSG_FEED);
	assert(dat_feed_open_decode(&feed, wire.payload, wire.payload_len) == 0 && feed.has_nonce);
	assert(sleep_stream_xsalsa20_xor(plain, capture.history[1], capture.history_length[1],
					 feed.nonce, metadata_keys.pubkey, 0) == 0);
	assert(dat_wire_decode(&wire, plain, capture.history_length[1], &consumed) == 0);
	assert(wire.channel == 0 && wire.type == DAT_MSG_HANDSHAKE);
	assert(dat_handshake_decode(&decoded, wire.payload, wire.payload_len) == 0);
	assert(decoded.has_peer_id);
	assert(sleep_stream_xsalsa20_xor(plain, capture.history[2], capture.history_length[2],
					 feed.nonce, metadata_keys.pubkey,
					 capture.history_length[1]) == 0);
	assert(dat_wire_decode(&wire, plain, capture.history_length[2], &consumed) == 0);
	assert(wire.channel == 1 && wire.type == DAT_MSG_FEED);
	/* The first Feed carries the responder nonce in clear; all following bytes stream-cipher. */
	memset(&feed, 0, sizeof(feed));
	assert(sleep_compute_discovery_key(metadata_keys.pubkey, feed.discovery_key) == 0);
	memcpy(feed.nonce, remote_nonce, sizeof(remote_nonce));
	feed.has_nonce = 1;
	assert(dat_feed_open_encode(&feed, payload, sizeof(payload), &payload_len) == 0);
	wire.channel = 0; wire.type = DAT_MSG_FEED;
	wire.payload = payload; wire.payload_len = payload_len;
	assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
	assert(dat_session_receive(&session, remote_id, frame, frame_len / 2) == 0);
	assert(peer->state == DAT_SESSION_PEER_SECURE);
	assert(dat_session_receive(&session, remote_id, frame + frame_len / 2,
				   frame_len - frame_len / 2) == 0);
	assert(dat_handshake_init(&handshake, remote_id, 0) == 0);
	assert(dat_handshake_encode(&handshake, payload, sizeof(payload), &payload_len) == 0);
	wire.channel = 0; wire.type = DAT_MSG_HANDSHAKE;
	wire.payload = payload; wire.payload_len = payload_len;
	assert(dat_wire_encode(&wire, encoded, sizeof(encoded), &encoded_len) == 0);
	assert(sleep_compute_discovery_key(content_keys.pubkey, feed.discovery_key) == 0);
	feed.has_nonce = 0;
	assert(dat_feed_open_encode(&feed, payload, sizeof(payload), &payload_len) == 0);
	wire.channel = 1; wire.type = DAT_MSG_FEED;
	wire.payload = payload; wire.payload_len = payload_len;
	assert(dat_wire_encode(&wire, encoded + encoded_len,
			       sizeof(encoded) - encoded_len, &content_frame_len) == 0);
	encoded_len += content_frame_len;
	assert(sleep_stream_xsalsa20_xor(frame, encoded, encoded_len, remote_nonce,
					 metadata_keys.pubkey, 0) == 0);
	assert(dat_session_receive(&session, remote_id, frame, encoded_len) == 0);
	assert(peer->state == DAT_SESSION_PEER_READY && peer->rx_offset == encoded_len &&
	       capture.calls == 3);
	assert(dat_session_peer_down(&session, remote_id) == 0);
	assert(dat_session_peer_discovered(&session, &discovered) == 0);
	assert(discovered_count == 2);
	assert(dat_session_close(&session) == 0);
	assert(cesspool_destroy(&pool) == 0);
	sleep_feed_close(&metadata);
	sleep_feed_close(&content);
}
#endif

#ifndef DAT_LEGACY_HYPERCORE
static void receive_standard_data(dat_session_t *source, cesspool_t *pool,
				 const send_capture_t *source_capture,
				 const uint8_t archive_key[32],
				 const uint8_t source_id[32],
				 const uint8_t remote_id[32],
				 uint8_t feed_keys[2][32])
{
	dat_session_t receiver;
	sleep_feed_t metadata_replica, content_replica, reopened_replica;
	send_capture_t receiver_capture;
	int p2p[2];
	cesspool_peer_t discovered;
	uint8_t receiver_id[32] = {9}, frame[8192], payload[8192];
	uint8_t handshake_bytes[128], open_bytes[128], request_bytes[64];
	uint8_t *data_bytes;
	dat_handshake_t handshake;
	dat_feed_open_t feed_open;
	dat_wire_message_t wire;
	dat_range_t range = {0, 3};
	size_t frame_len, payload_len, consumed, handshake_len, open_len, data_length;
	unsigned feed;
	char replica_dir[] = "/tmp/datgpt-replica-XXXXXX";
	memset(&metadata_replica, 0, sizeof(metadata_replica));
	memset(&content_replica, 0, sizeof(content_replica));
	memset(&receiver_capture, 0, sizeof(receiver_capture));
	assert(mkdtemp(replica_dir) != NULL);
	assert(socketpair(AF_UNIX, SOCK_STREAM, 0, p2p) == 0);
	assert(sleep_feed_open_remote(&metadata_replica, replica_dir, "metadata-replica",
				      feed_keys[0]) == 0);
	assert(sleep_feed_open_remote(&content_replica, replica_dir, "content-replica",
				      feed_keys[1]) == 0);
	assert(dat_session_init(&receiver, pool, archive_key, receiver_id, pool->port,
				&metadata_replica, feed_keys[0], &content_replica,
				feed_keys[1], capture_send, &receiver_capture) == 0);
	assert(dat_session_start(&receiver, 0, 1) == 0);
	memset(&discovered, 0, sizeof(discovered));
	memcpy(discovered.public_key, source_id, 32);
	memcpy(discovered.discovery_topic, receiver.discovery_topic, 32);
	discovered.discovered = 1;
	assert(dat_session_peer_discovered(&receiver, &discovered) == 0);
	assert(dat_session_peer_secure(&receiver, source_id, 1) == 0);
	for (feed = 0; feed < 2; feed++) {
		assert(sleep_compute_discovery_key(feed_keys[feed], feed_open.discovery_key) == 0);
		feed_open.has_nonce = 0;
		assert(dat_feed_open_encode(&feed_open, open_bytes, sizeof(open_bytes), &open_len) == 0);
		wire.channel = feed + 1; wire.type = DAT_MSG_FEED;
		wire.payload = open_bytes; wire.payload_len = open_len;
		assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
		stream_transfer(&receiver, source_id, p2p[0], p2p[1], frame, frame_len);
	}
	assert(dat_handshake_init(&handshake, source_id, 0) == 0);
	assert(dat_handshake_encode(&handshake, handshake_bytes, sizeof(handshake_bytes),
				    &handshake_len) == 0);
	wire.channel = 0; wire.type = DAT_MSG_HANDSHAKE;
	wire.payload = handshake_bytes; wire.payload_len = handshake_len;
	assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
	assert(dat_session_receive(&receiver, source_id, frame, frame_len) == 0);
	assert(dat_range_encode(&range, request_bytes, sizeof(request_bytes), &payload_len) == 0);
	wire.channel = 2; wire.type = DAT_MSG_HAVE;
	wire.payload = request_bytes; wire.payload_len = payload_len;
	assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
	assert(dat_session_receive(&receiver, source_id, frame, frame_len) == 0);
	assert(dat_session_find_peer(&receiver, source_id)->replication[DAT_SESSION_CONTENT].remote_length == 3);
	for (feed = 0; feed < 2; feed++) {
		dat_data_t sent, legacy;
		size_t block_index = feed == 0 ? 1u : 0u;
		assert(dat_session_send_block(source, remote_id, DAT_SESSION_CONTENT, block_index) == 0);
		assert(dat_wire_decode(&wire, source_capture->frame, source_capture->length,
				       &consumed) == 0);
		assert(wire.type == DAT_MSG_DATA && dat_data_decode(&sent, wire.payload,
								     wire.payload_len) == 0);
		assert(sent.index == block_index);
		assert(sent.proof_len && sent.has_signature && sent.node_count);
		legacy = sent;
		legacy.proof = NULL;
		legacy.proof_len = 0;
		assert(dat_data_encode(&legacy, payload, sizeof(payload), &payload_len) == 0);
		wire.channel = 2; wire.type = DAT_MSG_DATA;
		wire.payload = payload; wire.payload_len = payload_len;
		assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
		stream_transfer(&receiver, source_id, p2p[0], p2p[1], frame, frame_len);
	}
	for (feed = 0; feed < 2; feed++) {
		uint8_t *block;
		size_t block_len;
		assert(sleep_feed_read(&content_replica, feed, &block, &block_len) == 0);
		assert(block_len == (feed == 0 ? 4u : 3u));
		assert(!memcmp(block, feed == 0 ? "zero" : "one", block_len));
		free(block);
	}
	assert(content_replica.remote_only);
	puts("live peer byte-stream block transfer: PASS");
	assert(dat_session_send_block(&receiver, source_id, DAT_SESSION_CONTENT, 0) == 0);
	assert(dat_wire_decode(&wire, receiver_capture.frame, receiver_capture.length,
			       &consumed) == 0 && wire.type == DAT_MSG_DATA);
	{
		dat_data_t forwarded;
		sleep_proof_t proof;
		assert(dat_data_decode(&forwarded, wire.payload, wire.payload_len) == 0);
		assert(forwarded.proof_len);
		assert(sleep_proof_decode(&proof, forwarded.proof, forwarded.proof_len) == 0);
		assert(sleep_proof_verify(&proof, forwarded.value, forwarded.value_len,
					  feed_keys[1]) == 0);
	}
	assert(dat_session_close(&receiver) == 0);
	close(p2p[0]); close(p2p[1]);
	sleep_feed_close(&metadata_replica);
	sleep_feed_close(&content_replica);
	assert(sleep_feed_open_remote(&reopened_replica, replica_dir, "content-replica",
				      feed_keys[1]) == 0);
	assert(sleep_feed_has(&reopened_replica, 0) && sleep_feed_has(&reopened_replica, 1));
	assert(sleep_feed_read(&reopened_replica, 1, &data_bytes, &data_length) == 0);
	assert(data_length == 3 && !memcmp(data_bytes, "one", 3));
	free(data_bytes);
	sleep_feed_close(&reopened_replica);
	{
		char cache_path[1200];
		FILE *cache;
		int byte;
		snprintf(cache_path, sizeof(cache_path), "%s/content-replica.remote", replica_dir);
		cache = fopen(cache_path, "r+b");
		assert(cache && fseek(cache, -1, SEEK_END) == 0);
		byte = fgetc(cache);
		assert(byte != EOF && fseek(cache, -1, SEEK_CUR) == 0);
		assert(fputc(byte ^ 1, cache) != EOF && fclose(cache) == 0);
		assert(sleep_feed_open_remote(&reopened_replica, replica_dir,
					      "content-replica", feed_keys[1]) != 0);
	}
}
#endif

int main(void)
{
#ifdef DAT_LEGACY_HYPERCORE
	legacy_session_handshake();
	return 0;
#else
	cesspool_t pool;
	dat_session_t session;
	sleep_feed_t metadata, content;
	sleep_keypair_t metadata_keys, content_keys;
	send_capture_t capture;
	uint8_t archive_key[32] = {1}, local_id[32] = {2}, remote_id[32] = {3};
	uint8_t feed_key[2][32], handshake_bytes[72], frame[256], request_bytes[64];
	dat_handshake_t handshake;
	dat_feed_open_t remote_feed;
	dat_wire_message_t wire;
	dat_request_t request;
	cesspool_peer_t discovered;
	size_t handshake_len, frame_len, consumed, request_len;
	char feed_dir[] = "/tmp/datgpt-session-XXXXXX";
	unsigned discovered_count = 0;
	unsigned poll_count = 0;
	static const uint8_t mblock[] = "metadata";
	static const uint8_t cblocks[][8] = {"zero", "one", "two"};

	memset(&capture, 0, sizeof(capture));
	assert(mkdtemp(feed_dir) != NULL);
	assert(sleep_gen_keypair(&metadata_keys) == 0);
	assert(sleep_gen_keypair(&content_keys) == 0);
	memcpy(feed_key[0], metadata_keys.pubkey, 32);
	memcpy(feed_key[1], content_keys.pubkey, 32);
	assert(sleep_feed_open(&metadata, feed_dir, "metadata", &metadata_keys) == 0);
	assert(sleep_feed_open(&content, feed_dir, "content", &content_keys) == 0);
	assert(sleep_feed_append(&metadata, mblock, sizeof(mblock) - 1) == 0);
	assert(sleep_feed_append(&content, cblocks[0], 4) == 0);
	assert(sleep_feed_append(&content, cblocks[1], 3) == 0);
	assert(sleep_feed_append(&content, cblocks[2], 3) == 0);
	assert(sleep_feed_flush(&metadata) == 0);
	assert(sleep_feed_flush(&content) == 0);
	assert(cesspool_init(&pool, local_id) == 0);
	assert(cesspool_listen(&pool, "127.0.0.1", 0) == 0);
	assert(cesspool_add_bootstrap(&pool, "127.0.0.1", 9) == 0);
	assert(dat_session_init(&session, &pool, archive_key, local_id, 3282,
				&metadata, feed_key[0], &content, feed_key[1],
				capture_send, &capture) == 0);
	assert(dat_session_set_peer_callback(&session, count_peer, &discovered_count) == 0);
	assert(dat_session_set_transport_poll(&session, count_poll, &poll_count) == 0);
	assert(dat_session_start(&session, 1, 1) == 0);
	assert(session.state == DAT_SESSION_DISCOVERING);
	memset(&discovered, 0, sizeof(discovered));
	memcpy(discovered.public_key, remote_id, sizeof(remote_id));
	memcpy(discovered.discovery_topic, session.discovery_topic,
	       sizeof(discovered.discovery_topic));
	discovered.discovered = 1;
	assert(cesspool_add_peer(&pool, &discovered) == 0);
	assert(dat_session_peer_discovered(&session, &discovered) == 0);
	assert(dat_session_tick(&session, 1) == 0);
	assert(poll_count == 1);
	assert(dat_session_find_peer(&session, remote_id) != NULL);
	assert(discovered_count == 1);
	assert(dat_session_peer_secure(&session, remote_id, 1) == 0);
	assert(capture.calls == 3);
	for (unsigned feed_index = 0; feed_index < 2; feed_index++) {
		assert(sleep_compute_discovery_key(feed_key[feed_index],
					   remote_feed.discovery_key) == 0);
		remote_feed.has_nonce = 0;
		assert(dat_feed_open_encode(&remote_feed, request_bytes,
					    sizeof(request_bytes), &request_len) == 0);
		wire.channel = feed_index + 1;
		wire.type = DAT_MSG_FEED;
		wire.payload = request_bytes;
		wire.payload_len = request_len;
		assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
		assert(dat_session_receive(&session, remote_id, frame, frame_len) == 0);
	}

	assert(dat_handshake_init(&handshake, remote_id, 7) == 0);
	assert(dat_handshake_encode(&handshake, handshake_bytes, sizeof(handshake_bytes),
				    &handshake_len) == 0);
	wire.channel = 0;
	wire.type = DAT_MSG_HANDSHAKE;
	wire.payload = handshake_bytes;
	wire.payload_len = handshake_len;
	assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
	assert(dat_session_receive(&session, remote_id, frame, frame_len / 2) == 0);
	assert(dat_session_receive(&session, remote_id, frame + frame_len / 2,
				   frame_len - frame_len / 2) == 0);
	assert(session.state == DAT_SESSION_ACTIVE);
	assert(dat_session_find_peer(&session, remote_id)->state == DAT_SESSION_PEER_READY);
	assert(capture.calls == 5);
	assert(dat_wire_decode(&wire, capture.frame, capture.length, &consumed) == 0);
	assert(wire.type == DAT_MSG_HAVE && wire.channel == 2);
	{
		dat_range_t have;
		assert(dat_range_decode(&have, wire.payload, wire.payload_len) == 0);
		assert(have.start == 0 && have.length == 3);
	}
	{
		dat_range_t want = {0, 3};
	assert(dat_range_encode(&want, request_bytes, sizeof(request_bytes), &request_len) == 0);
	wire.channel = 2; wire.type = DAT_MSG_WANT;
	wire.payload = request_bytes; wire.payload_len = request_len;
	assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
	assert(dat_session_receive(&session, remote_id, frame, frame_len) == 0);
	assert(capture.calls == 6);
	assert(dat_wire_decode(&wire, capture.frame, capture.length, &consumed) == 0);
	assert(wire.channel == 2 && wire.type == DAT_MSG_HAVE);
	}

	assert(dat_session_request_block(&session, remote_id, DAT_SESSION_CONTENT,
					 12, 4096) == 0);
	assert(capture.calls == 7);
	assert(dat_wire_decode(&wire, capture.frame, capture.length, &consumed) == 0);
	assert(consumed == capture.length && wire.channel == 2 && wire.type == DAT_MSG_REQUEST);
	assert(dat_request_decode(&request, wire.payload, wire.payload_len) == 0);
	assert(request.index == 12 && request.bytes == 4096 && request.want_hash && request.want_nodes);
	request.index = 1; request.bytes = 0; request.want_hash = request.want_nodes = 1;
	assert(dat_request_encode(&request, request_bytes, sizeof(request_bytes), &request_len) == 0);
	wire.channel = 2; wire.type = DAT_MSG_REQUEST;
	wire.payload = request_bytes; wire.payload_len = request_len;
	assert(dat_wire_encode(&wire, frame, sizeof(frame), &frame_len) == 0);
	assert(dat_session_receive(&session, remote_id, frame, frame_len) == 0);
	assert(capture.calls == 8);
	assert(dat_wire_decode(&wire, capture.frame, capture.length, &consumed) == 0);
	assert(wire.type == DAT_MSG_DATA && wire.channel == 2);
	{
		dat_data_t data;
		sleep_proof_t proof;
		assert(dat_data_decode(&data, wire.payload, wire.payload_len) == 0);
		assert(data.index == 1 && data.value_len == 3 && !memcmp(data.value, "one", 3));
		assert(data.has_signature && data.node_count > 0);
		assert(sleep_proof_decode(&proof, data.proof, data.proof_len) == 0);
		assert(sleep_proof_verify(&proof, data.value, data.value_len, content_keys.pubkey) == 0);
		{
			sleep_feed_t replica;
			sleep_proof_t first_proof, forwarded;
			uint8_t proof_bytes[8192], forwarded_bytes[8192];
			size_t proof_len, forwarded_len;
			memset(&replica, 0, sizeof(replica));
			strcpy(replica.directory, feed_dir);
			strcpy(replica.name, "content-replica");
			assert(sleep_proof_create(&content, 0, &first_proof) == 0);
			assert(sleep_proof_encode(&first_proof, proof_bytes, sizeof(proof_bytes), &proof_len) == 0);
			assert(sleep_feed_append_remote(&replica, 0, cblocks[0], 4, proof_bytes, proof_len) == 0);
			assert(sleep_feed_append_remote(&replica, 1, data.value, data.value_len,
						data.proof, data.proof_len) == 0);
			assert(sleep_proof_create(&replica, 1, &forwarded) == 0);
			assert(sleep_proof_encode(&forwarded, forwarded_bytes, sizeof(forwarded_bytes),
						   &forwarded_len) == 0);
			assert(forwarded_len == data.proof_len &&
				!memcmp(forwarded_bytes, data.proof, forwarded_len));
			assert(sleep_proof_verify(&forwarded, data.value, data.value_len,
						  content_keys.pubkey) == 0);
			assert(sleep_feed_flush(&replica) != 0);
			sleep_feed_close(&replica);
		}
		receive_standard_data(&session, &pool, &capture, archive_key, local_id,
				      remote_id, feed_key);
		((uint8_t *)data.value)[0] ^= 1;
		assert(sleep_proof_verify(&proof, data.value, data.value_len, content_keys.pubkey) != 0);
	}
	assert(dat_session_peer_down(&session, remote_id) == 0);
	assert(session.state == DAT_SESSION_DISCOVERING);
	assert(dat_session_peer_discovered(&session, &discovered) == 0);
	assert(discovered_count == 2);
	assert(dat_session_close(&session) == 0);
	assert(session.state == DAT_SESSION_CLOSED);
	assert(cesspool_destroy(&pool) == 0);
	sleep_feed_close(&metadata);
	sleep_feed_close(&content);
	return 0;
#endif
}