20 HTTP_OTA 无法获取固件内容求助

发布于 2023-11-14 22:23:22 浏览：668 订阅该版

RT-Thread版本：4.1.0

开发平台：STM32L4

4G模块型号：广和通L610 4G模块

这两天在使用ota_downloader组件的http_ota功能

使用过程中发现在下载固件固件过程中出现问题

根据日志看到4G模块发送GET请求后，服务器返回了Content-Length，客户端也成功接收到了，初步说明联网功能是正常实现的

```
msh />http_ota
using uri: http://8.134.196.117:34639/rtthread.rbl
[W/web] resp_status >= 0,LINE=1035
[E/http_ota] file_size=136940
[I/http_ota] OTA file size is (136940)
[I/http_ota] Start erase flash (download) partition!
[I/http_ota] Erase flash (download) partition success!
[I/web] Range: [0000 -> 1023]
```

下一步通过查看源码应该发送GET请求，其中有Range字段，指明文件的开始结束，实现分段下载的功能，但是在日志中发现模块通过socket发送一个定长数据失败后，等待关闭socket，并进行重试

```
[E/at.clnt] execute command (AT+MIPSEND=1,119) failed! failed with status -1
[E/at.skt.l610] l610 device socket(1) wait close OK timeout.
[I/web] Range: [0000 -> 1023]
[E/web] receive data timeout.
[E/at.skt.l610] l610 device socket(1) wait close OK timeout.
[I/web] Range: [0000 -> 1023]
[E/web] receive data timeout.
[E/at.skt.l610] l610 device socket(1) wait close OK timeout.
[E/web] connect failed, connect socket(3) error.
```

**通过追查发现看到failed的原因在at_client中进行解析时，发现响应行中包含字符串AT_RESP_END_ERROR**

```c
                else if (rt_strstr(client->recv_line_buf, AT_RESP_END_ERROR)
                        || (rt_memcmp(client->recv_line_buf, AT_RESP_END_FAIL, rt_strlen(AT_RESP_END_FAIL)) == 0))
                {
                    client->resp_status = AT_RESP_ERROR;
                }
```

在服务端使用ngrep进行抓包发现服务器是有接收到GET请求的，并且也在正常的返回固件

抓包日志如下

```
 sudo ngrep -q -W byline -d any port 80 or port 443 or port 34639 and host 39.144.17.40
interface: any
filter: ( port 80 or port 443 or port 34639 and host 39.144.17.40 ) and (ip || ip6)

T 39.144.17.40:14221 -> 172.21.24.42:34639 [A] #7
......

T 39.144.17.40:14221 -> 172.21.24.42:34639 [AP] #8
HEAD /rtthread.rbl HTTP/1.1.
Host: 8.134.196.117.
User-Agent: RT-Thread HTTP Agent.
Accept: */*.
.

T 172.21.24.42:34639 -> 39.144.17.40:14221 [AP] #10
HTTP/1.1 200 OK.
Server: Werkzeug/3.0.1 Python/3.10.12.
Date: Tue, 14 Nov 2023 12:00:15 GMT.
Content-Disposition: attachment; filename=rtthread.rbl.
Content-Type: application/octet-stream.
Content-Length: 136940.
Last-Modified: Mon, 13 Nov 2023 06:19:46 GMT.
Cache-Control: no-cache.
ETag: "1699856386.8101008-136940-1600522338".
Date: Tue, 14 Nov 2023 12:00:15 GMT.
Connection: close.
.

T 39.144.17.40:14221 -> 172.21.24.42:34639 [A] #12
......

T 39.144.17.40:14221 -> 172.21.24.42:34639 [AF] #13
......

T 39.144.17.40:14222 -> 172.21.24.42:34639 [A] #17
...Oj.

T 39.144.17.40:14222 -> 172.21.24.42:34639 [AP] #18
GET /rtthread.rbl HTTP/1.1.
Range: bytes=0-1023.
Host: 8.134.196.117.
User-Agent: RT-Thread HTTP Agent.
Accept: */*.
.

T 172.21.24.42:34639 -> 39.144.17.40:14222 [AP] #20
HTTP/1.1 206 PARTIAL CONTENT.
Server: Werkzeug/3.0.1 Python/3.10.12.
Date: Tue, 14 Nov 2023 12:00:17 GMT.
Content-Disposition: attachment; filename=rtthread.rbl.
Content-Type: application/octet-stream.
Content-Length: 1024.
Last-Modified: Mon, 13 Nov 2023 06:19:46 GMT.
Cache-Control: no-cache.
ETag: "1699856386.8101008-136940-1600522338".
Date: Tue, 14 Nov 2023 12:00:17 GMT.
Accept-Ranges: bytes.
Content-Range: bytes 0-1023/136940.
Connection: close.
.

T 172.21.24.42:34639 -> 39.144.17.40:14222 [AFP] #21
RBL......OPeapp.............2.5.....................00010203040506070809.......v=.?.t..........8....O.........2..... ]................&.....a...&.....*...........c..[.............-...K..".....&I....&....L#....x3..K...H.....##p...h.
p......K..H....I.
...J... ......r.pG....pGFJ.h.+......O....`CJ...`CHO..Q.`pG..r.<H.....hQ.O....`:0............!...!.......x....$A..M.h.`0I.h.h.......+.....T........N...... .!.N...pG%I.`...."........... IQ...`. . .H.I... A..!...).....H.h.h......a.b...O...o.pG......@.H.......... ..@..........1.........v.]...A....#!... h.l..... ...... .FA......P@...m.@:A.Q..;Y.;.:..@:..02..D..:...2..
.....:...2.........;........`F.P.*.. ..................."...1..; .{..:.....!.:.....x.pKxCp.x.p.........x.x.*(......B..m..E@......go...O.Dr...H........j..... .......!...O......#..........g....b...f...
.c...bFg...fF...
........L.........l..8..........P..#Q..A...&...%C....-.....$1.'.....#.........
........E...q.$....

&.
"....:
....<..@..Q..(.P..+Q..;. ...].P..,..<...-...".."!&..S/.O........!........
J.H....

T 39.144.17.40:14222 -> 172.21.24.42:34639 [A] #22
..MA.H

T 39.144.17.40:14222 -> 172.21.24.42:34639 [AF] #23
...`V.

T 39.144.17.40:14223 -> 172.21.24.42:34639 [A] #27
......

T 39.144.17.40:14223 -> 172.21.24.42:34639 [AP] #28
GET /rtthread.rbl HTTP/1.1.
Range: bytes=0-1023.
Host: 8.134.196.117.
User-Agent: RT-Thread HTTP Agent.
Accept: */*.
.

T 172.21.24.42:34639 -> 39.144.17.40:14223 [AP] #30
HTTP/1.1 206 PARTIAL CONTENT.
Server: Werkzeug/3.0.1 Python/3.10.12.
Date: Tue, 14 Nov 2023 12:00:24 GMT.
Content-Disposition: attachment; filename=rtthread.rbl.
Content-Type: application/octet-stream.
Content-Length: 1024.
Last-Modified: Mon, 13 Nov 2023 06:19:46 GMT.
Cache-Control: no-cache.
ETag: "1699856386.8101008-136940-1600522338".
Date: Tue, 14 Nov 2023 12:00:24 GMT.
Accept-Ranges: bytes.
Content-Range: bytes 0-1023/136940.
Connection: close.
.

T 172.21.24.42:34639 -> 39.144.17.40:14223 [AFP] #31
RBL......OPeapp.............2.5.....................00010203040506070809.......v=.?.t..........8....O.........2..... ]................&.....a...&.....*...........c..[.............-...K..".....&I....&....L#....x3..K...H.....##p...h.
p......K..H....I.
...J... ......r.pG....pGFJ.h.+......O....`CJ...`CHO..Q.`pG..r.<H.....hQ.O....`:0............!...!.......x....$A..M.h.`0I.h.h.......+.....T........N...... .!.N...pG%I.`...."........... IQ...`. . .H.I... A..!...).....H.h.h......a.b...O...o.pG......@.H.......... ..@..........1.........v.]...A....#!... h.l..... ...... .FA......P@...m.@:A.Q..;Y.;.:..@:..02..D..:...2..
.....:...2.........;........`F.P.*.. ..................."...1..; .{..:.....!.:.....x.pKxCp.x.p.........x.x.*(......B..m..E@......go...O.Dr...H........j..... .......!...O......#..........g....b...f...
.c...bFg...fF...
........L.........l..8..........P..#Q..A...&...%C....-.....$1.'.....#.........
........E...q.$....

&.
"....:
....<..@..Q..(.P..+Q..;. ...].P..,..<...-...".."!&..S/.O........!........
J.H....

T 39.144.17.40:14223 -> 172.21.24.42:34639 [A] #32
......

T 39.144.17.40:14223 -> 172.21.24.42:34639 [AF] #33
......
```

想请教一些各位大佬，下一步应该如何排查这类问题呢？