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https://github.com/cwyark/sdk-ameba-v4.0b_without_nda_gcc.git
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ChesterTseng
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274
component/common/example/ssl_download/example_ssl_download.c
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274
component/common/example/ssl_download/example_ssl_download.c
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#include <platform_opts.h>
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#if defined(CONFIG_EXAMPLE_SSL_DOWNLOAD) && (CONFIG_EXAMPLE_SSL_DOWNLOAD == 1)
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#include <FreeRTOS.h>
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#include <task.h>
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#include <platform/platform_stdlib.h>
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#include "platform_opts.h"
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#if CONFIG_USE_POLARSSL
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#include <lwip/sockets.h>
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#include <polarssl/config.h>
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#include <polarssl/memory.h>
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#include <polarssl/ssl.h>
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#define SERVER_HOST "176.34.62.248"
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#define SERVER_PORT 443
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#define RESOURCE "/repository/IOT/Project_Cloud_A.bin"
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#define BUFFER_SIZE 2048
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static int my_random(void *p_rng, unsigned char *output, size_t output_len)
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{
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rtw_get_random_bytes(output, output_len);
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return 0;
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}
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static void example_ssl_download_thread(void *param)
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{
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int server_fd = -1, ret;
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struct sockaddr_in server_addr;
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ssl_context ssl;
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// Delay to wait for IP by DHCP
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vTaskDelay(10000);
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printf("\nExample: SSL download\n");
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memory_set_own(pvPortMalloc, vPortFree);
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memset(&ssl, 0, sizeof(ssl_context));
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if((ret = net_connect(&server_fd, SERVER_HOST, SERVER_PORT)) != 0) {
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printf("ERROR: net_connect ret(%d)\n", ret);
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goto exit;
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}
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if((ret = ssl_init(&ssl)) != 0) {
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printf("ERRPR: ssl_init ret(%d)\n", ret);
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goto exit;
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}
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ssl_set_endpoint(&ssl, SSL_IS_CLIENT);
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ssl_set_authmode(&ssl, SSL_VERIFY_NONE);
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ssl_set_rng(&ssl, my_random, NULL);
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ssl_set_bio(&ssl, net_recv, &server_fd, net_send, &server_fd);
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if((ret = ssl_handshake(&ssl)) != 0) {
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printf("ERROR: ssl_handshake ret(-0x%x)", -ret);
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goto exit;
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}
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else {
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unsigned char buf[BUFFER_SIZE + 1];
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int pos = 0, read_size = 0, resource_size = 0, content_len = 0, header_removed = 0;
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printf("SSL ciphersuite %s\n", ssl_get_ciphersuite(&ssl));
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sprintf(buf, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", RESOURCE, SERVER_HOST);
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ssl_write(&ssl, buf, strlen(buf));
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while((read_size = ssl_read(&ssl, buf + pos, BUFFER_SIZE - pos)) > 0) {
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if(header_removed == 0) {
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char *header = NULL;
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pos += read_size;
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buf[pos] = 0;
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header = strstr(buf, "\r\n\r\n");
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if(header) {
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char *body, *content_len_pos;
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body = header + strlen("\r\n\r\n");
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*(body - 2) = 0;
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header_removed = 1;
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printf("\nHTTP Header: %s\n", buf);
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// Remove header size to get first read size of data from body head
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read_size = pos - ((unsigned char *) body - buf);
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pos = 0;
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content_len_pos = strstr(buf, "Content-Length: ");
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if(content_len_pos) {
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content_len_pos += strlen("Content-Length: ");
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*(char*)(strstr(content_len_pos, "\r\n")) = 0;
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content_len = atoi(content_len_pos);
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}
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}
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else {
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if(pos >= BUFFER_SIZE){
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printf("ERROR: HTTP header\n");
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goto exit;
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}
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continue;
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}
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}
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printf("read resource %d bytes\n", read_size);
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resource_size += read_size;
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}
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printf("exit read. ret = %d\n", read_size);
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printf("http content-length = %d bytes, download resource size = %d bytes\n", content_len, resource_size);
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}
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exit:
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if(server_fd >= 0)
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net_close(server_fd);
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ssl_free(&ssl);
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vTaskDelete(NULL);
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}
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void example_ssl_download(void)
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{
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if(xTaskCreate(example_ssl_download_thread, ((const char*)"example_ssl_download_thread"), 2048, NULL, tskIDLE_PRIORITY + 1, NULL) != pdPASS)
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printf("\n\r%s xTaskCreate(init_thread) failed", __FUNCTION__);
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}
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#elif CONFIG_USE_MBEDTLS /* CONFIG_USE_POLARSSL */
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#include <mbedTLS/config.h>
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#include <mbedTLS/platform.h>
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#include <mbedtls/net_sockets.h>
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#include <mbedTLS/ssl.h>
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#define SERVER_HOST "176.34.62.248"
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#define SERVER_PORT "443"
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#define RESOURCE "/repository/IOT/Project_Cloud_A.bin"
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#define BUFFER_SIZE 2048
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static int my_random(void *p_rng, unsigned char *output, size_t output_len)
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{
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rtw_get_random_bytes(output, output_len);
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return 0;
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}
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static void* my_calloc(size_t nelements, size_t elementSize)
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{
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size_t size;
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void *ptr = NULL;
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size = nelements * elementSize;
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ptr = pvPortMalloc(size);
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if(ptr)
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memset(ptr, 0, size);
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return ptr;
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}
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static void example_ssl_download_thread(void *param)
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{
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int ret;
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mbedtls_net_context server_fd;
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mbedtls_ssl_context ssl;
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mbedtls_ssl_config conf;
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// Delay to wait for IP by DHCP
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vTaskDelay(10000);
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printf("\nExample: SSL download\n");
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mbedtls_platform_set_calloc_free(my_calloc, vPortFree);
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mbedtls_net_init(&server_fd);
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mbedtls_ssl_init(&ssl);
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mbedtls_ssl_config_init(&conf);
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if((ret = mbedtls_net_connect(&server_fd, SERVER_HOST, SERVER_PORT, MBEDTLS_NET_PROTO_TCP)) != 0) {
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printf("ERROR: mbedtls_net_connect ret(%d)\n", ret);
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goto exit;
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}
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mbedtls_ssl_set_bio(&ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL);
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if((ret = mbedtls_ssl_config_defaults(&conf,
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MBEDTLS_SSL_IS_CLIENT,
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MBEDTLS_SSL_TRANSPORT_STREAM,
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MBEDTLS_SSL_PRESET_DEFAULT)) != 0) {
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printf("ERRPR: mbedtls_ssl_config_defaults ret(%d)\n", ret);
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goto exit;
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}
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mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_NONE);
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mbedtls_ssl_conf_rng(&conf, my_random, NULL);
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if((ret = mbedtls_ssl_setup(&ssl, &conf)) != 0) {
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printf("ERRPR: mbedtls_ssl_setup ret(%d)\n", ret);
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goto exit;
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}
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if((ret = mbedtls_ssl_handshake(&ssl)) != 0) {
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printf("ERROR: mbedtls_ssl_handshake ret(-0x%x)", -ret);
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goto exit;
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}
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else {
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unsigned char buf[BUFFER_SIZE + 1];
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int pos = 0, read_size = 0, resource_size = 0, content_len = 0, header_removed = 0;
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printf("SSL ciphersuite %s\n", mbedtls_ssl_get_ciphersuite(&ssl));
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sprintf(buf, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", RESOURCE, SERVER_HOST);
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mbedtls_ssl_write(&ssl, buf, strlen(buf));
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while((read_size = mbedtls_ssl_read(&ssl, buf + pos, BUFFER_SIZE - pos)) > 0) {
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if(header_removed == 0) {
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char *header = NULL;
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pos += read_size;
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buf[pos] = 0;
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header = strstr(buf, "\r\n\r\n");
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if(header) {
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char *body, *content_len_pos;
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body = header + strlen("\r\n\r\n");
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*(body - 2) = 0;
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header_removed = 1;
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printf("\nHTTP Header: %s\n", buf);
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// Remove header size to get first read size of data from body head
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read_size = pos - ((unsigned char *) body - buf);
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pos = 0;
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content_len_pos = strstr(buf, "Content-Length: ");
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if(content_len_pos) {
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content_len_pos += strlen("Content-Length: ");
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*(strstr(content_len_pos, "\r\n")) = 0;
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content_len = atoi(content_len_pos);
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}
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}
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else {
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if(pos >= BUFFER_SIZE){
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printf("ERROR: HTTP header\n");
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goto exit;
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}
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continue;
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}
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}
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printf("read resource %d bytes\n", read_size);
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resource_size += read_size;
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}
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printf("exit read. ret = %d\n", read_size);
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printf("http content-length = %d bytes, download resource size = %d bytes\n", content_len, resource_size);
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}
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exit:
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mbedtls_net_free(&server_fd);
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mbedtls_ssl_free(&ssl);
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mbedtls_ssl_config_free(&conf);
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vTaskDelete(NULL);
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}
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void example_ssl_download(void)
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{
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if(xTaskCreate(example_ssl_download_thread, ((const char*)"example_ssl_download_thread"), 2048, NULL, tskIDLE_PRIORITY + 1, NULL) != pdPASS)
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printf("\n\r%s xTaskCreate(init_thread) failed", __FUNCTION__);
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}
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#endif /* CONFIG_USE_POLARSSL */
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#endif /*CONFIG_EXAMPLE_SSL_DOWNLOAD*/
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@ -0,0 +1,6 @@
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#ifndef EXAMPLE_SSL_DOWNLOAD_H
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#define EXAMPLE_SSL_DOWNLOAD_H
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void example_ssl_download(void);
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#endif /* EXAMPLE_SSL_DOWNLOAD_H */
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24
component/common/example/ssl_download/readme.txt
Normal file
24
component/common/example/ssl_download/readme.txt
Normal file
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SSL DOWNLOAD EXAMPLE
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Description:
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Download file from Web server via https.
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Configuration:
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Modify SERVER_HOST, SERVER_PORT and RESOURCE in example_ssl_download.c based on your SSL server.
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Modify SSL_MAX_CONTENT_LEN in SSL config and configTOTAL_HEAP_SIZE in freertos config for large size file.
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If the transmitted fils size is larger than 16kbytes, SSL_MAX_CONTENT_LEN should be set to 16384.
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FreeRTOS heap may be increased for ssl buffer allocation.
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(ex. If using 16kbytes * 2 for ssl input/output buffer, heap should be increased from 60kbytes to 80kbytes.)
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[config_rsa.h]
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#define SSL_MAX_CONTENT_LEN 16384
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[FreeRTOSConfig.h]
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#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 80 * 1024 ) )
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[platform_opts.h]
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#define CONFIG_EXAMPLE_SSL_DOWNLOAD 1
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Execution:
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Can make automatical Wi-Fi connection when booting by using wlan fast connect example.
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A ssl download example thread will be started automatically when booting.
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