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Examples: Rename main.c files to more descriptive file names

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Angus Gratton 2015-06-16 16:59:32 +10:00
parent f0db6f2b98
commit 8478dfd92f
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131
examples/http_get/http_get.c Normal file
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/* http_get - Retrieves a web page over HTTP GET.
*
* See http_get_ssl for a TLS-enabled version.
*
* This sample code is in the public domain.,
*/
#include "espressif/esp_common.h"
#include "espressif/sdk_private.h"
#include "FreeRTOS.h"
#include "task.h"
#include "lwip/err.h"
#include "lwip/sockets.h"
#include "lwip/sys.h"
#include "lwip/netdb.h"
#include "lwip/dns.h"
#define WEB_SERVER "chainxor.org"
#define WEB_PORT 80
#define WEB_URL "http://chainxor.org/"
#if !defined(WIFI_SSID) || !defined(WIFI_PASS)
#error "Please define macros WIFI_SSID & WIFI_PASS (here, or better in a local.h file at root level or in program dir."
#endif
void http_get_task(void *pvParameters)
{
int successes = 0, failures = 0;
printf("HTTP get task starting...\r\n");
while(1) {
const struct addrinfo hints = {
.ai_family = AF_INET,
.ai_socktype = SOCK_STREAM,
};
struct addrinfo *res;
printf("Running DNS lookup for %s...\r\n", WEB_SERVER);
int err = getaddrinfo(WEB_SERVER, "80", &hints, &res);
if(err != 0 || res == NULL) {
printf("DNS lookup failed err=%d res=%p\r\n", err, res);
if(res)
freeaddrinfo(res);
vTaskDelay(1000 / portTICK_RATE_MS);
failures++;
continue;
}
/* Note: inet_ntoa is non-reentrant, look at ipaddr_ntoa_r for "real" code */
struct in_addr *addr = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
printf("DNS lookup succeeded. IP=%s\r\n", inet_ntoa(*addr));
int s = socket(res->ai_family, res->ai_socktype, 0);
if(s < 0) {
printf("... Failed to allocate socket.\r\n");
freeaddrinfo(res);
vTaskDelay(1000 / portTICK_RATE_MS);
failures++;
continue;
}
printf("... allocated socket\r\n");
if(connect(s, res->ai_addr, res->ai_addrlen) != 0) {
close(s);
freeaddrinfo(res);
printf("... socket connect failed.\r\n");
vTaskDelay(4000 / portTICK_RATE_MS);
failures++;
continue;
}
printf("... connected\r\n");
freeaddrinfo(res);
const char *req =
"GET "WEB_URL"\r\n"
"User-Agent: esp-open-rtos/0.1 esp8266\r\n"
"\r\n";
if (write(s, req, strlen(req)) < 0) {
printf("... socket send failed\r\n");
close(s);
vTaskDelay(4000 / portTICK_RATE_MS);
failures++;
continue;
}
printf("... socket send success\r\n");
static char recv_buf[128];
int r;
do {
bzero(recv_buf, 128);
r = read(s, recv_buf, 127);
if(r > 0) {
printf("%s", recv_buf);
}
} while(r > 0);
printf("... done reading from socket. Last read return=%d errno=%d\r\n", r, errno);
if(r != 0)
failures++;
else
successes++;
close(s);
printf("successes = %d failures = %d\r\n", successes, failures);
for(int countdown = 10; countdown >= 0; countdown--) {
printf("%d... ", countdown);
vTaskDelay(1000 / portTICK_RATE_MS);
}
printf("\r\nStarting again!\r\n");
}
}
void user_init(void)
{
sdk_uart_div_modify(0, UART_CLK_FREQ / 115200);
printf("SDK version:%s\n", sdk_system_get_sdk_version());
struct sdk_station_config config = {
.ssid = WIFI_SSID,
.password = WIFI_PASS,
};
/* required to call wifi_set_opmode before station_set_config */
sdk_wifi_set_opmode(STATION_MODE);
sdk_wifi_station_set_config(&config);
xTaskCreate(&http_get_task, (signed char *)"get_task", 256, NULL, 2, NULL);
}