OVMS3-idf/examples/protocols/http_server/advanced_tests/main/tests.c

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#include <stdlib.h>
#include <stdbool.h>
#include <esp_log.h>
#include <esp_system.h>
#include <http_server.h>
#include "tests.h"
static const char *TAG="TESTS";
int pre_start_mem, post_stop_mem, post_stop_min_mem;
bool basic_sanity = true;
/********************* Basic Handlers Start *******************/
esp_err_t hello_get_handler(httpd_req_t *req)
{
#define STR "Hello World!"
ESP_LOGI(TAG, "Free Stack for server task: %d", uxTaskGetStackHighWaterMark(NULL));
httpd_resp_send(req, STR, strlen(STR));
return ESP_OK;
#undef STR
}
esp_err_t hello_type_get_handler(httpd_req_t *req)
{
#define STR "Hello World!"
httpd_resp_set_type(req, HTTPD_TYPE_TEXT);
httpd_resp_send(req, STR, strlen(STR));
return ESP_OK;
#undef STR
}
esp_err_t hello_status_get_handler(httpd_req_t *req)
{
#define STR "Hello World!"
httpd_resp_set_status(req, HTTPD_500);
httpd_resp_send(req, STR, strlen(STR));
return ESP_OK;
#undef STR
}
esp_err_t echo_post_handler(httpd_req_t *req)
{
ESP_LOGI(TAG, "/echo handler read content length %d", req->content_len);
char* buf = malloc(req->content_len + 1);
size_t off = 0;
int ret;
if (!buf) {
return ESP_FAIL;
}
while (off < req->content_len) {
/* Read data received in the request */
ret = httpd_req_recv(req, buf + off, req->content_len - off);
if (ret < 0) {
free (buf);
return ESP_FAIL;
}
off += ret;
ESP_LOGI(TAG, "/echo handler recv length %d", ret);
}
buf[off] = '\0';
if (req->content_len < 128) {
ESP_LOGI(TAG, "/echo handler read %s", buf);
}
/* Search for Custom header field */
char* req_hdr = 0;
size_t hdr_len = httpd_req_get_hdr_value_len(req, "Custom");
if (hdr_len) {
/* Read Custom header value */
req_hdr = malloc(hdr_len + 1);
if (req_hdr) {
httpd_req_get_hdr_value_str(req, "Custom", req_hdr, hdr_len + 1);
/* Set as additional header for response packet */
httpd_resp_set_hdr(req, "Custom", req_hdr);
}
}
httpd_resp_send(req, buf, req->content_len);
free (req_hdr);
free (buf);
return ESP_OK;
}
void adder_free_func(void *ctx)
{
ESP_LOGI(TAG, "Custom Free Context function called");
free(ctx);
}
/* Create a context, keep incrementing value in the context, by whatever was
* received. Return the result
*/
esp_err_t adder_post_handler(httpd_req_t *req)
{
char buf[10];
char outbuf[50];
int ret;
/* Read data received in the request */
ret = httpd_req_recv(req, buf, sizeof(buf));
if (ret < 0) {
return ESP_FAIL;
}
buf[ret] = '\0';
int val = atoi(buf);
ESP_LOGI(TAG, "/adder handler read %d", val);
if (! req->sess_ctx) {
ESP_LOGI(TAG, "/adder allocating new session");
req->sess_ctx = malloc(sizeof(int));
req->free_ctx = adder_free_func;
*(int *)req->sess_ctx = 0;
}
int *adder = (int *)req->sess_ctx;
*adder += val;
snprintf(outbuf, sizeof(outbuf),"%d", *adder);
httpd_resp_send(req, outbuf, strlen(outbuf));
return ESP_OK;
}
esp_err_t leftover_data_post_handler(httpd_req_t *req)
{
/* Only echo the first 10 bytes of the request, leaving the rest of the
* request data as is.
*/
char buf[11];
int ret;
/* Read data received in the request */
ret = httpd_req_recv(req, buf, sizeof(buf) - 1);
if (ret < 0) {
return ESP_FAIL;
}
buf[ret] = '\0';
ESP_LOGI(TAG, "leftover data handler read %s", buf);
httpd_resp_send(req, buf, strlen(buf));
return ESP_OK;
}
int httpd_default_send(int sockfd, const char *buf, unsigned buf_len, int flags);
void generate_async_resp(void *arg)
{
char buf[250];
int fd = (int )arg;
#define HTTPD_HDR_STR "HTTP/1.1 200 OK\r\n" \
"Content-Type: text/html\r\n" \
"Content-Length: %d\r\n"
#define STR "Hello Double World!"
ESP_LOGI(TAG, "Executing queued work fd : %d", fd);
snprintf(buf, sizeof(buf), HTTPD_HDR_STR,
strlen(STR));
httpd_default_send(fd, buf, strlen(buf), 0);
/* Space for sending additional headers based on set_header */
httpd_default_send(fd, "\r\n", strlen("\r\n"), 0);
httpd_default_send(fd, STR, strlen(STR), 0);
#undef STR
}
esp_err_t async_get_handler(httpd_req_t *req)
{
#define STR "Hello World!"
httpd_resp_send(req, STR, strlen(STR));
/* Also register a HTTPD Work which sends the same data on the same
* socket again
*/
int fd = httpd_req_to_sockfd(req);
if (fd < 0) {
return ESP_FAIL;
}
ESP_LOGI(TAG, "Queuing work fd : %d", fd);
httpd_queue_work(req->handle, generate_async_resp, (void *)fd);
return ESP_OK;
#undef STR
}
httpd_uri_t basic_handlers[] = {
{ .uri = "/hello/type_html",
.method = HTTP_GET,
.handler = hello_type_get_handler,
.user_ctx = NULL,
},
{ .uri = "/hello",
.method = HTTP_GET,
.handler = hello_get_handler,
.user_ctx = NULL,
},
{ .uri = "/hello/status_500",
.method = HTTP_GET,
.handler = hello_status_get_handler,
.user_ctx = NULL,
},
{ .uri = "/echo",
.method = HTTP_POST,
.handler = echo_post_handler,
.user_ctx = NULL,
},
{ .uri = "/echo",
.method = HTTP_PUT,
.handler = echo_post_handler,
.user_ctx = NULL,
},
{ .uri = "/leftover_data",
.method = HTTP_POST,
.handler = leftover_data_post_handler,
.user_ctx = NULL,
},
{ .uri = "/adder",
.method = HTTP_POST,
.handler = adder_post_handler,
.user_ctx = NULL,
},
{ .uri = "/async_data",
.method = HTTP_GET,
.handler = async_get_handler,
.user_ctx = NULL,
}
};
int basic_handlers_no = sizeof(basic_handlers)/sizeof(httpd_uri_t);
void register_basic_handlers(httpd_handle_t hd)
{
int i;
ESP_LOGI(TAG, "Registering basic handlers");
ESP_LOGI(TAG, "No of handlers = %d", basic_handlers_no);
for (i = 0; i < basic_handlers_no; i++) {
if (httpd_register_uri_handler(hd, &basic_handlers[i]) != ESP_OK) {
ESP_LOGW(TAG, "register uri failed for %d", i);
return;
}
}
ESP_LOGI(TAG, "Success");
}
/********************* Basic Handlers End *******************/
esp_err_t my_hello_post_handler(httpd_req_t *req)
{
char buf[10];
char outbuf[50];
int ret;
ret = httpd_req_recv(req, buf, sizeof(buf));
if (ret < 0) {
return ESP_FAIL;
}
httpd_resp_set_status(req, HTTPD_404);
httpd_resp_set_type(req, HTTPD_TYPE_TEXT);
ESP_LOGI(TAG, "Read %d bytes as:%s:", ret, buf);
buf[ret] = '\0';
#define STR "my_hello_handler"
snprintf(outbuf, sizeof(outbuf), STR" %s", buf);
httpd_resp_send(req, outbuf, strlen(outbuf));
return ESP_OK;
#undef STR
}
/********************* Test Handler Limit Start *******************/
esp_err_t null_func(httpd_req_t *req)
{
return ESP_OK;
}
httpd_uri_t handler_limit_uri (char* path)
{
httpd_uri_t uri = {
.uri = path,
.method = HTTP_GET,
.handler = null_func,
.user_ctx = NULL,
};
return uri;
};
static inline unsigned num_digits(unsigned x)
{
unsigned digits = 1;
while ((x = x/10) != 0) {
digits++;
}
return digits;
}
#define HTTPD_TEST_MAX_URI_HANDLERS 8
void test_handler_limit(httpd_handle_t hd)
{
int i, ret;
char x[HTTPD_TEST_MAX_URI_HANDLERS+1][num_digits(HTTPD_TEST_MAX_URI_HANDLERS)+1];
httpd_uri_t uris[HTTPD_TEST_MAX_URI_HANDLERS+1];
for (i = 0; i < HTTPD_TEST_MAX_URI_HANDLERS + 1; i++) {
sprintf(x[i],"%d",i);
uris[i] = handler_limit_uri(x[i]);
}
/* Register multiple instances of the same handler for MAX URI Handlers */
ESP_LOGI(TAG, "Test: Register Max URI handlers: %d...", HTTPD_TEST_MAX_URI_HANDLERS);
for (i = 0; i < HTTPD_TEST_MAX_URI_HANDLERS; i++) {
ret = httpd_register_uri_handler(hd, &uris[i]);
if (ret != ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
}
ESP_LOGI(TAG, "Success");
/* Register the MAX URI + 1 Handlers should fail */
ESP_LOGI(TAG, "Test: Register Max URI + 1 handlers: %d th...", HTTPD_TEST_MAX_URI_HANDLERS +1 );
ret = httpd_register_uri_handler(hd, &uris[HTTPD_TEST_MAX_URI_HANDLERS]);
if (ret == ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
ESP_LOGI(TAG, "Success");
/* Unregister the one of the Handler should pass */
ESP_LOGI(TAG, "Test: Unregister 0th handler...");
ret = httpd_unregister_uri_handler(hd, uris[0].uri, uris[0].method);
if (ret != ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
ESP_LOGI(TAG, "Success");
/* Unregister non added Handler should fail */
ESP_LOGI(TAG, "Test: Again unregister 0th handler not registered...");
ret = httpd_unregister_uri_handler(hd, uris[0].uri, uris[0].method);
if (ret == ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
ESP_LOGI(TAG, "Success");
/* Register the MAX URI Handler should pass */
ESP_LOGI(TAG, "Test: Register back 0th handler...");
ret = httpd_register_uri_handler(hd, &uris[0]);
if (ret != ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
ESP_LOGI(TAG, "Success");
/* Reregister same instance of handler should fail */
ESP_LOGI(TAG, "Test: Register 0th handler again after registering...");
ret = httpd_register_uri_handler(hd, &uris[0]);
if (ret == ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
ESP_LOGI(TAG, "Success");
/* Register the MAX URI + 1 Handlers should fail */
ESP_LOGI(TAG, "Test: Register 1 more handler...");
ret = httpd_register_uri_handler(hd, &uris[HTTPD_TEST_MAX_URI_HANDLERS]);
if (ret == ESP_OK) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
ESP_LOGI(TAG, "Success");
/* Unregister the same handler for MAX URI Handlers */
ESP_LOGI(TAG, "Test: Unregister all handlers:");
for (i = 0; i < HTTPD_TEST_MAX_URI_HANDLERS; i++) {
ret = httpd_unregister_uri_handler(hd, uris[i].uri, uris[i].method);
if (ret != 0) {
ESP_LOGI(TAG, "Fail");
goto error_ret;
}
}
ESP_LOGI(TAG, "Success");
error_ret:
for (; i < HTTPD_TEST_MAX_URI_HANDLERS; i++) {
httpd_unregister_uri_handler(hd, uris[i].uri, uris[i].method);
}
basic_sanity = false;
}
/********************* Test Handler Limit End *******************/
httpd_handle_t test_httpd_start()
{
pre_start_mem = esp_get_free_heap_size();
httpd_handle_t hd;
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
config.server_port = 1234;
/* This check should be a part of http_server */
config.max_open_sockets = (CONFIG_LWIP_MAX_SOCKETS - 3);
if (httpd_start(&hd, &config) == ESP_OK) {
ESP_LOGI(TAG, "Started HTTP server on port: %d", config.server_port);
ESP_LOGI(TAG, "Max URI handlers: %d", config.max_uri_handlers);
ESP_LOGI(TAG, "Max Open Sessions: %d", config.max_open_sockets);
ESP_LOGI(TAG, "Max Header Length: %d", HTTPD_MAX_REQ_HDR_LEN);
ESP_LOGI(TAG, "Max URI Length: %d", HTTPD_MAX_URI_LEN);
ESP_LOGI(TAG, "Max Stack Size: %d", config.stack_size);
return hd;
}
return NULL;
}
httpd_handle_t test_httpd_start_dummy(uint16_t id)
{
pre_start_mem = esp_get_free_heap_size();
ESP_LOGI(TAG, "HTTPD Start: Current free memory: %d", pre_start_mem);
httpd_handle_t hd;
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
config.max_uri_handlers = HTTPD_TEST_MAX_URI_HANDLERS;
config.server_port += id;
config.ctrl_port += id;
if (httpd_start(&hd, &config) == ESP_OK) {
return hd;
}
return NULL;
}
void test_httpd_stop(httpd_handle_t hd)
{
httpd_stop(hd);
post_stop_mem = esp_get_free_heap_size();
ESP_LOGI(TAG, "HTTPD Stop: Current free memory: %d", post_stop_mem);
// Below function is not available but would be desirable to have
// post_stop_min_mem = os_get_minimum_free_mem();
// ESP_LOGI(TAG, "HTTPD Stop: Minimum free memory: %d", post_stop_min_mem);
}
#define SERVER_INSTANCES 10
/* Currently this only tests for the number of tasks.
* Heap leakage is not tested as LWIP allocates memory
* which may not be freed immedietly causing erroneous
* evaluation. Another test to implement would be the
* monitoring of open sockets, but LWIP presently provides
* no such API for getting the number of open sockets.
*/
bool leak_test(void)
{
httpd_handle_t hd[SERVER_INSTANCES];
bool success = true;
unsigned task_count = uxTaskGetNumberOfTasks();
ESP_LOGI(TAG, "Leak Test Started...");
ESP_LOGI(TAG, "Current free heap : %d", xPortGetFreeHeapSize());
ESP_LOGI(TAG, "Total tasks running : %d", task_count);
for (int i = 0; i < SERVER_INSTANCES; i++) {
ESP_LOGI(TAG, "Starting Server Instance [%d]", i);
hd[i] = test_httpd_start_dummy(i);
if (hd[i]) {
register_basic_handlers(hd[i]);
task_count++;
}
ESP_LOGI(TAG, "Current free heap : %d", xPortGetFreeHeapSize());
ESP_LOGI(TAG, "Total tasks running : %d", uxTaskGetNumberOfTasks());
if (uxTaskGetNumberOfTasks() != task_count) {
ESP_LOGE(TAG, "Task count mismatch");
success = false;
break;
}
}
for (int i = 0; i < SERVER_INSTANCES; i++) {
ESP_LOGI(TAG, "Stopping Server Instance [%d]", i);
if (hd[i]) {
httpd_stop(hd[i]);
task_count--;
}
ESP_LOGI(TAG, "Current free heap : %d", xPortGetFreeHeapSize());
ESP_LOGI(TAG, "Total tasks running : %d", uxTaskGetNumberOfTasks());
if (uxTaskGetNumberOfTasks() != task_count) {
ESP_LOGE(TAG, "Task count mismatch");
success = false;
}
}
if (success) {
ESP_LOGI(TAG, "Leak Test Passed");
}
else {
ESP_LOGI(TAG, "Leak Test Failed");
}
return success;
}
httpd_handle_t start_tests()
{
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// leak_test();
httpd_handle_t hd = test_httpd_start();
if (hd) {
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// test_handler_limit(hd);
register_basic_handlers(hd);
}
return hd;
}
void stop_tests(httpd_handle_t hd)
{
ESP_LOGI(TAG, "Stopping httpd");
test_httpd_stop(hd);
}