ESP8266WebServer handle client

[ningyichensha]

Hi, I like to use your lib to handle a client, which connects to the AP.

Could you please could help with the proper syntax of the app.on...... statement?

I tried something like:
app.onAvailable(&server, [] () {
server.handleClient();

[mairas]

.onAvailable adds a reaction for Arduino-like streams and is most likely not what you want. It's a bit difficult to tell what exactly you are trying to do but you might want to have a look at https://github.com/SignalK/SensESP. It's a project that uses ReactESP extensively. If you search that repository for "app.on", you'll find a ton of examples on different use cases. Some of them might be a bit complex but others should be quite understandable.

[ningyichensha]

Thanx for your answer.
What I like to achieve is the following.
Parallel to a program running on the ESP I like to set up a wifi access point (socket) and listen to a client to connect.
But because the listen statement is blocking the complete program. To this I have no solution.

With your lib I hope to overcome this blocking. E.g. if a client likes to connect, a construct like this maybe helps.
app.onAvailable(&server, [] () {
server.handleClient();
The idea is: if a server is available, the ESP responces.

The link to SenseESP did not give me an idea to solve it.

[horodchukanton]

You can't use blocking calls, because they will stop the loop execution. This means you can't use a blocking server to achieve asynchronous execution. The callback will not create a thread that could handle this case.

The better way would be to use existing async HTTP server library like https://github.com/me-no-dev/ESPAsyncWebServer