ESP8226HTTPUpdate

[adrian-dybwad]

After having some updates corrupted when the server returned an unexpected response on a server error, I made some changes to the update function in ESP8226HTTPUpdate.cpp so the error response was not written to the ESP and treated like an update.

I added a boolean parameter to the handleUpdate function in ESP8266HTTPUpdate called "requireMD5" with a default value of false.
Then, in the handleUpdate function inside ESP8266HTTPUpdate.cpp itself,

    if(http->hasHeader("x-MD5")) {
        DEBUG_HTTP_UPDATE("[httpUpdate]  - MD5: %s\n", http->header("x-MD5").c_str());
    } else if (code == 200 && requireMD5) {
        DEBUG_HTTP_UPDATE("[httpUpdate]  - MD5 not found, aborting...\n");
        http->end();
        return HTTP_UPDATE_FAILED;
    }

You may consider adding something like this to the main code base!

[mtnbrit]

Hello, is there a how-to in the works for creating the MD5 hash and using it to verify the bin file integrity when doing ESP8266HTTPUpdate? Can I assume there would be additions to the advanced updater server-side php script?

[adrian-dybwad]

This is VBScript I used on the server: http://stackoverflow.com/a/31453654/1022455

[Links2004]

take a look her:
https://github.com/esp8266/Arduino/blob/master/doc/ota_updates/ota_updates.md#server-request-handling
there is a sample php script

[mtnbrit]

Thanks, didnt realize the script already supported md5, cool!

I am getting an error when attempting httpUpdate, as follows. I added debug lines to show the content of buf[0] etc, as you can see it appears tcp->peekBytes is not returning the head of the file properly. I have confirmed the file does in fact start with 0xE9.

im running 1.6.7 with the git version.

:wcs ra 43Receiving OTA from /v2/ota.php
:wr
:sent 101
:ww
:ref 1
:wr
:sent 334
:ww
:rn 1460
[httpUpdate] Header read fin.
[httpUpdate] Server header:
[httpUpdate]  - code: 200
[httpUpdate]  - len: 343104
[httpUpdate]  - MD5: c4ee9d3ebff1d75df4145265cf349624
[httpUpdate] ESP8266 info:
[httpUpdate]  - free Space: 700416
[httpUpdate]  - current Sketch Size: 344520
:abort
:ur 1
:del
:rch 1460, 1460
:rch 2920, 1460
:rch 4380, 1460
[httpUpdate] runUpdate flash...
:pd 4, 5840, 283
:rpi 1177, 4
[httpUpdate]buf[0]: 3C
[httpUpdate]buf[1]: 62
[httpUpdate]buf[2]: 72
[httpUpdate]buf[3]: 20
[httpUpdate] magic header not starts with 0xE9
:ur 1
:close
:del
HTTP_UPDATE_FAILED Error (-106): Verify bin header failed

[Links2004]

3C 62 72 20 is the same as <br
i am sure html is not what you want to get, check the php/apache error log, there is something going wrong.

[mtnbrit]

Thanks, the php was returning an error about the version header not being specified. Its working now.