first add sdk

component/common/example/http_client/example_http_client.c

@@ -0,0 +1,86 @@
+#include <platform_opts.h>
+#include "FreeRTOS.h"
+#include "task.h"
+#include "lwip/netdb.h"
+#include "http_client.h"
+#include "http_client/example_http_client.h"
+#include <platform/platform_stdlib.h>
+
+#define THREAD_STACK_SIZE 1024
+#define HOST_NAME "www.google.com.tw"
+#define HOST_PORT 80
+
+extern char *http_post_header(char *host, char *resource, char *type, int data_len);
+extern char *http_get_header(char *host, char *resource);
+
+void http_client(void)
+{
+    int port = HOST_PORT;
+    char *host = HOST_NAME;
+    char *message_fmt = "POST / HTTP/1.0\r\n\r\n"; 
+    struct hostent *server;
+    struct sockaddr_in serv_addr;
+    int sockfd, bytes;
+    char message[256],*response;
+    
+    sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    if(sockfd < 0)
+        printf("[ERROR] Create socket failed\n");
+    
+    server = gethostbyname(host);
+    if(server == NULL) 
+        printf("[ERROR] Get host ip failed\n");
+    
+    memset(&serv_addr,0,sizeof(serv_addr));
+    serv_addr.sin_family = AF_INET;
+    serv_addr.sin_port = htons(port);
+    memcpy(&serv_addr.sin_addr.s_addr,server->h_addr,server->h_length);
+    
+    if (connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr)) < 0){
+        printf("[ERROR] connect failed\n");
+        return ;
+    }
+    
+    //send request
+    sprintf(message,"%s",http_get_header(HOST_NAME,"/"));
+    printf("\nRequest:\n%s\n",message);
+    bytes = write(sockfd,message,256);
+    if (bytes < 0)
+        printf("[ERROR] send packet failed\n");
+    
+    //receive response
+    response = malloc(1500);
+    if(response ==NULL)
+        printf("[ERROR] malloc failed\n");
+    printf("Response:\n");
+    do {
+        memset(response,0,1500);
+        bytes = read(sockfd,response,1500-1);
+        if (bytes < 0)
+            printf("[ERROR] receive packet failed\n");
+        if (bytes == 0)
+            break;
+        printf("%s",response);
+    } while (bytes > 0);
+
+    //close the socket
+    close(sockfd);
+
+    return;
+}
+
+static void http_client_thread(void *param)
+{
+    //wait for wifi connected, a rough time
+    vTaskDelay(10000);
+    
+    http_client();
+    vTaskDelete(NULL);
+}
+
+void example_http_client(void)
+{
+    if(xTaskCreate(http_client_thread, ((const char*)"http_client_thread"), THREAD_STACK_SIZE, NULL, tskIDLE_PRIORITY , NULL) != pdPASS)
+        printf("\n\r%s xTaskCreate(http_client_thread) failed\n", __FUNCTION__);
+    return;
+}