ESP8266 Community Forum

- Fri May 20, 2016 11:00 am #47720 Hello guys,
i get fatal exception or wdt overflow exception with this code below.
Actually it connects my local web page then it receives properly but after 10th or more run it crashes.

Code: Select all#include "esp_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "lwip/sockets.h"
#include "lwip/dns.h"
#include "lwip/netdb.h"
#include "uart.h"

#define server_ip "10.20.0.136"
#define server_port 80

void task2(void *pvParameters)
{
    printf("Hello, welcome to client!\r\n");

    while (1) {
        int recbytes;
        int sin_size;
        int str_len;
        int sta_socket;

        struct sockaddr_in local_ip;
        struct sockaddr_in remote_ip;

        sta_socket = socket(PF_INET, SOCK_STREAM, 0);

        if (-1 == sta_socket) {
            close(sta_socket);
            printf("C > socket fail!\n");
            continue;
        }
        vTaskDelay(1000 / portTICK_RATE_MS);
        //printf("C > socket ok!\n");
        bzero(&remote_ip, sizeof(struct sockaddr_in));
        remote_ip.sin_family = AF_INET;
        remote_ip.sin_addr.s_addr = inet_addr(server_ip);
        remote_ip.sin_port = htons(server_port);

        if (0 != connect(sta_socket, (struct sockaddr *)(&remote_ip), sizeof(struct sockaddr))) {
            close(sta_socket);
            printf("C > connect fail!\n");
            vTaskDelay(4000 / portTICK_RATE_MS);
            continue;
        }

        //printf("C > connect ok!\n");
        char *pbuf = (char *)zalloc(1024);
        sprintf(pbuf, "%s\n", "GET http://10.20.0.136 HTTP/1.1\r\nHost: host:port\r\nConnection: close\r\n\r\n");

        if (write(sta_socket, pbuf, strlen(pbuf) + 1) < 0) {
            printf("C > send fail\n");
        }

        //printf("C > send success\n");
        free(pbuf);

        char *recv_buf = (char *)zalloc(128);
        while ((recbytes = read(sta_socket , recv_buf, 128)) > 0) {
           recv_buf[recbytes] = 0;
            printf("%s\n",recv_buf);
        }
        free(recv_buf);

        if (recbytes <= 0) {
          close(sta_socket);
            printf("C > read data fail!\n");
        }
    }
}


void user_init(void)
{

   UART_SetBaudrate(UART0,BIT_RATE_115200);
    printf("SDK version:%s\n", system_get_sdk_version());

    /* need to set opmode before you set config */
    wifi_set_opmode(STATION_MODE);

    {
        struct station_config *config = (struct station_config *)zalloc(sizeof(struct station_config));
        sprintf(config->ssid, "Guest");
        sprintf(config->password, "Geo256Cell");

        /* need to sure that you are in station mode first,
         * otherwise it will be failed. */
        wifi_station_set_config(config);
        free(config);
    }

    xTaskCreate(task2, "tsk2", 2048, NULL, 2, NULL);
}