Issues with Telegram bot sending messages

Other Questions Telegram bot
1 
#include <stdio.h>
#include <curl/curl.h>

int main(void) {
    CURL *curl;
    CURLcode result;

    const char* bot_token = "your_bot_token_here";
    const char* chat_id = "2041832290";
    char endpoint[256];

    snprintf(endpoint, sizeof(endpoint), "https://api.telegram.org/bot%s/sendMessage", bot_token);
    char message_data[100];
    snprintf(message_data, sizeof(message_data), "chat_id=%s&text=%s", chat_id, "Hello, World!");

    curl = curl_easy_init();
    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, endpoint);
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, message_data);

        result = curl_easy_perform(curl);
        curl_easy_cleanup(curl);

        if (result != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() error: %s\n", curl_easy_strerror(result));
        }
    }
    
    return 0;
}
``` The bot has been granted admin rights in the channel, and I have verified the channel ID multiple times. However, it still fails to send messages without any error notification.
2

In cases like these, make sure you’re sending a POST request, not mistakenly configuring it as a GET. Also, watch out for escaping special chars in your message data. If there are any special characters, they should be properly URL-encoded. Sometimes, this small detail makes all te difference!

3

If you’re still facing issues, consider checking the SSL/TLS settings in your CURL operation. Telegram’s API requires HTTPS, and if there’s an issue with SSL verification, it might fail silently without a friendly error message. You could try disabling the peer verification with curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L); for testing purposes but ensure you re-enable it for production. Also, make sure your bot hasn’t hit any messaging limits on Telegram, as that would also prevent it from sending messages.

4

I faced a similar issue before, and it turned out to be related to the bot not being able to send messages directly to a channel with its ID. One approach you can try is using the bot’s username along with the @ symbol instead of a numerical chat ID (e.g., @YourChannelName). Channels require different permissions compared to individual chats. Also, double-check that the channel allows messages from bots and that your bot remains active. Ensuring your bot has enough permissions is often overlooked, so verify that as well.