AsyncTCP without Arduino (ESP-IDF only)

[mathieucarbou]

This PR complements the work from @gnalbandian in PR #47

• Add ESP-IDf related api even on Arduino since compatible
• Treat Arduino API as delegates on esp-idf layer

[mathieucarbou]

@gnalbandian : FYI the new PR that I will complement.

[Copilot]

Copilot reviewed 7 out of 9 changed files in this pull request and generated no comments.

Files not reviewed (2)

• CMakeLists.txt: Language not supported
• idf_component_examples/client/CMakeLists.txt: Language not supported

[gnalbandian]

Hi @everyone! @mathieucarbou I've made a quick read over the code changes and it seems pretty good to me.
I see you've done some variables and functions cleanup also. I didn't know for sure if they were meant to be use or not so I leaved them untouched.
I'll try to test the new code today and come back with some feedback.
Thanks everyone for the work implied!

[gnalbandian]

Everything good! Works without issues in my app.

The only thing I noticed while testing some examples is that the client _pcb->local_port gets zeroed before the client disconnect callback gets called. Maybe it's fine. I've seen this behavior in the main branch also.

I (5856) AsyncTCP: ** data received by client: 62214: len=202
I (5856) AsyncTCP: ** data received by client: 62214: len=1440
I (5866) AsyncTCP: ** data received by client: 0: len=117 // <- See here
I (5866) AsyncTCP: ** client has been disconnected: 0 // <- See here

This is the code:

client->onConnect([](void *arg, AsyncClient *client)
    {
        ESP_LOGI("AsyncTCP", "** client has been connected: %" PRIu16 "\n", client->localPort());

        client->onDisconnect([](void *arg, AsyncClient *client) {
            ESP_LOGI("AsyncTCP", "** client has been disconnected: %" PRIu16 "\n", client->localPort());
            client->close(true);
            delete client;
        });

        client->onData([](void *arg, AsyncClient *client, void *data, size_t len) {
            ESP_LOGI("AsyncTCP", "** data received by client: %" PRIu16 ": len=%u\n", client->localPort(), len);
        });

        client->write("GET /README.md HTTP/1.1\r\nHost: 192.168.2.33 \r\nUser-Agent: ESP\r\nConnection: close\r\n\r\n");
    });

[mathieucarbou]

Thanks for reporting that, I will create an issue from that and talk with the team.