RT-Thread-[Webclient]数据接收问题RT-Thread问答社区

[Webclient]数据接收问题

发布于 2019-09-20 20:02:35 浏览：2158 订阅该版

做的是百度语音识别，用的是IOT Board 1.1.0 SDK（iot_http_client例程修改），webclient软件包为最新版本，代码借鉴了论坛一众大神，但是Webclient软件包貌似变化了很多
下面是我的代码：
```c
#include <string.h>
#include <rtthread.h>
#include <webclient.h>
#include <rtdbg.h>
#include <dfs_posix.h>
#include <webclient_post_file.h>

#define POST_FILE_URL  "http://vop.baidu.com/server_api?dev_pid=1536&cuid=lxzzzzzxl&token=25.9119f50a60602866be9288f1f14a1059.315360000.1884092937.282335-15525116"
char *form_data = "audio/pcm;rate=16000";

void bd(int argc, char **argv)
{ 
 char *filename = NULL;
 unsigned char *buffer = RT_NULL;
 rt_uint8_t *buf = RT_NULL;
 int content_length = -1, bytes_read = 0;
 int content_pos = 0;
 int resp_status = 0;
 int ret = 0;
 
 /* 判读命令是否合法 */
 if(argc != 2)
 {
 rt_kprintf("web_post_file_bd <filename> ");
 return;
 }
 
 /* get voice filename */
 filename = argv[1];
 
 int fd = open(filename, O_RDONLY, 0);
 if(fd < 0)
 {
 rt_kprintf("open %d fail! ", filename);
 goto __exit;
 }
 
 /* get the size of file */
 size_t length = lseek(fd, 0, SEEK_END);
 lseek(fd, 0, SEEK_SET);
 
 buffer = (unsigned char *) web_malloc(4096);
 if(buffer == RT_NULL)
 {
 rt_kprintf("no memory for receive response buffer. ");
 ret = -RT_ENOMEM;
 goto __exit;
 }
 
 /* 创建客户端会话结构体 */
 struct webclient_session *session = webclient_session_create(2048);
 if(session == RT_NULL)
 {
 ret = -RT_ENOMEM;
 goto __exit;
 }

/* 拼接头部数据 */
 rt_kprintf("length: %d ",length);
 webclient_header_fields_add(session, "Content-Length: %d ", length);
 webclient_header_fields_add(session, "Content-Type: %s ", form_data);

/* 发送POST请求 */
 int rc = webclient_post(session, POST_FILE_URL, NULL);
 if(rc < 0)
 {
 rt_kprintf("webclient post data error! ");
 goto __exit;
 }else if (rc == 0)
 {
 rt_kprintf("webclient connected and send header msg! ");
 }else
 {
 rt_kprintf("rc code: %d! ", rc);
 }
 
 while(1)
 {
 rt_memset(buffer, 0, 4096);
 length = read(fd, buffer, 4096);
 if(length <= 0)
 {
 break;
 }
 //rt_kprintf("read file data length %d ", length);
 ret = webclient_write(session, buffer, length);
 if(ret < 0)
 {
 rt_kprintf("webclient write error! ");
 break;
 }
 
 rt_thread_mdelay(100);
 }
 close(fd);
 rt_kprintf("Upload voice data successfully ");
 
 if(webclient_resp_status_get(session) != 200)
 {
 LOG_E("get handle resposne error!");
 //goto __exit;
 }

content_length = webclient_content_length_get(session);
        rt_thread_delay(100);

do
 {
 bytes_read = webclient_read(session, buffer, 1024 );
 if (bytes_read <= 0)
 {
 break;
 }
 for(int index = 0; index < bytes_read; index++)
 {
 rt_kprintf("%c", buffer[index]);
 }
 content_pos += bytes_read;
 }while(content_pos < content_length);

for(int i = 0; i < 4096; i++)
 {
 if(buffer* == '[' && buffer[i+1] == '"')
 {
 for(int k =i+2; k<4096; k++)
 {
 
 if(buffer[k] == '"')
 break;
 rt_kprintf("%c", buffer[k]);
 } 
 rt_kprintf(" ");
 }
 }

__exit:
                                if(fd >= 0)
                                        close(fd);
                                if(session != NULL)
                                        webclient_close(session);
                                if(buffer != NULL)
                                        web_free(buffer);
                                
                                return;
}
MSH_CMD_EXPORT(bd, webclient post file);

```

这是运行结果：
![微信截图_20190920195834.png](/uploads/201909/20/195858g3bcbbr1vnz6cvdz.png)

我的问题是：
明明能有数据响应，返回也是对的，但是判断状态响应码一直都不是200，然后会有图片中红色的报错，所以我搞不明白这个接收是怎么回事。

上面部分使用的是板载wifi，相同代码的情况下，使用ESP8266-AT组件，结果如下：
![微信截图_20190920203349.png](/uploads/201909/20/203406ux2bf6onbamxo9mn.png)

![微信截图_20190921122400.png](/uploads/201909/21/122533yrxxdulrhrclt778.png)
到底是什么情况？求指教。