8000 Example WebServer WebServer.ino does not redirect when index.htm does not exist by mathertel · Pull Request #9142 · esp8266/Arduino · GitHub
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Example WebServer WebServer.ino does not redirect when index.htm does not exist #9142

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Merged
merged 3 commits into from
Jun 15, 2024
Merged

Example WebServer WebServer.ino does not redirect when index.htm does not exist #9142

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af5427a
Update WebServer.ino to fix #9141
mathertel May 20, 2024
c0b53c2
Update README.md
mathertel May 20, 2024
c5e393d
Merge branch 'master' into master
mcspr Jun 15, 2024
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12 changes: 5 additions & 7 deletions libraries/ESP8266WebServer/examples/WebServer/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,6 @@ It features
* Only files in the root folder are supported for simplicity - no directories.




## Implementing a web server

The ESP8266WebServer library offers a simple path to implement a web server on a ESP8266 board.
Expand Down Expand Up @@ -90,7 +88,7 @@ that actually has only one line of functionality by sending a string as result t
> });
> ```

Here the text from a static String with html code is returned instead of a file from the filesystem.
Here the text from a static string with html code is returned instead of a file from the filesystem.
The content of this string can be found in the file `builtinfiles.h`. It contains a small html+javascript implementation
that allows uploading new files into the empty filesystem.

Expand All @@ -100,14 +98,14 @@ Just open <http://webserver/$upload.htm> and drag some files from the data folde
## Registering a function to handle requests to the server without a path

Often servers are addressed by using the base URL like <http://webserver/> where no further path details is given.
Of course we like the user to be redirected to something usable. Therefore the `handleRoot()` function is registered:
Of course we like the user to be redirected to something usable. Therefore the `handleRedirect()` function is registered:

> ```CPP
> server.on("/$upload.htm", handleRoot);
> server.on("/", HTTP_GET, handleRedirect);
> ```

The `handleRoot()` function checks the filesystem for the file named **/index.htm** and creates a redirect to this file when the file exists.
Otherwise the redirection goes to the built-in **/$upload.htm** web page.
The `handleRedirect()` function checks the filesystem for the file named **/index.htm** and creates a redirect
response to this file when the file exists. Otherwise the redirection goes to the built-in **/$upload.htm** web page.



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2 changes: 1 addition & 1 deletion libraries/ESP8266WebServer/examples/WebServer/WebServer.ino
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< 5557 td id="diff-6bb678326063e6902d280cf452e946f8177e38fef301bcce37c5b1fc151e10f8L41" data-line-number="41" class="blob-num blob-num-context js-linkable-line-number">
Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ void handleRedirect() {
TRACE("Redirect...");
String url = "/index.htm";

if (!LittleFS.exists(url)) { url = "/$update.htm"; }
if (!LittleFS.exists(url)) { url = "/$upload.htm"; }

server.redirect(url);
} // handleRedirect()
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