采用4G模块EC20来做OTA升级时无法完全下载，提示TCP Window Full?

发布于 2019-07-10 17:23:26 浏览：4867 订阅该版

* 本帖最后由 shauew 于 2019-7-16 18:43 编辑 *

服务器是使用MyWebServer部署在公网上面：
![{B9267B54-F9E1-45D2-A439-3B733868AC11}_20190711174434.jpg](/uploads/201907/11/174546xa4brgbna9wi0frr.jpg)

运行日志如下：
```msh />http_ota http://xxxxxx/rtthread.rbl
http file_size:93148
[I/http_ota] Start erase flash (download) partition!
[I/http_ota] Erase flash (download) partition success!
[I/http_ota] OTA file size is (93148)
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[E/at.clnt] read line failed. The line data length is out of buffer size(512)!
[I/http_ota] Download: [==============================>                       ] 30%
[I/http_ota] Download: [================================>                     ] 32%
[E/http_ota] Exit: server return err (0)!
msh />```
抓包截图，文件见附件。
![微信截图_20190716183205.png](/uploads/201907/16/184223bvrhvdav7cvk57vk.png)
下载附件 [ota.pcapng](https://oss-club.rt-thread.org/uploads/201907/16/184313xgky0u1b0i005ett.attach)