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tests: coap_client: Add testcase for receiving RST

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When server responds with CoAP RESET, we should inform the
client and stop the request.

Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>
This commit is contained in:
Seppo Takalo 2024-11-12 16:18:46 +02:00 • committed by Anas Nashif
commit 107dc9b96d
1 changed files with 44 additions and 0 deletions
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44
tests/net/lib/coap_client/src/main.c
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@ -279,6 +279,25 @@ static ssize_t z_impl_zsock_recvfrom_custom_fake_empty_ack(int sock, void *buf,
return sizeof(ack_data);
}
static ssize_t z_impl_zsock_recvfrom_custom_fake_rst(int sock, void *buf, size_t max_len, int flags,
struct sockaddr *src_addr, socklen_t *addrlen)
{
uint16_t last_message_id = 0;
static uint8_t rst_data[] = {0x70, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
last_message_id = get_next_pending_message_id();
rst_data[2] = (uint8_t)(last_message_id >> 8);
rst_data[3] = (uint8_t)last_message_id;
memcpy(buf, rst_data, sizeof(rst_data));
clear_socket_events(sock, ZSOCK_POLLIN);
return sizeof(rst_data);
}
static ssize_t z_impl_zsock_recvfrom_custom_fake_only_ack(int sock, void *buf, size_t max_len,
int flags, struct sockaddr *src_addr,
socklen_t *addrlen)
@ -1098,3 +1117,28 @@ ZTEST(coap_client, test_observe)
zassert_not_ok(k_sem_take(&sem, K_MSEC(MORE_THAN_EXCHANGE_LIFETIME_MS)));
}
ZTEST(coap_client, test_request_rst)
{
struct k_sem sem;
struct sockaddr address = {0};
struct coap_client_request client_request = {
.method = COAP_METHOD_GET,
.confirmable = true,
.path = test_path,
.fmt = COAP_CONTENT_FORMAT_TEXT_PLAIN,
.cb = coap_callback,
.payload = short_payload,
.len = strlen(short_payload),
.user_data = &sem,
};
zassert_ok(k_sem_init(&sem, 0, 1));
k_sleep(K_MSEC(1));
z_impl_zsock_recvfrom_fake.custom_fake = z_impl_zsock_recvfrom_custom_fake_rst;
zassert_ok(coap_client_req(&client, 0, &address, &client_request, NULL));
zassert_ok(k_sem_take(&sem, K_MSEC(MORE_THAN_EXCHANGE_LIFETIME_MS)));
zassert_equal(last_response_code, -ECONNRESET, "");
}