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# Golang bindings for the Telegram Bot API
[](https://pkg.go.dev/github.com/go-telegram-bot-api/telegram-bot-api/v5)
[](https://github.com/go-telegram-bot-api/telegram-bot-api/actions/workflows/test.yml)
All methods are fairly self-explanatory, and reading the [godoc](https://pkg.go.dev/github.com/go-telegram-bot-api/telegram-bot-api/v5) page should
explain everything. If something isn't clear, open an issue or submit
a pull request.
There are more tutorials and high-level information on the website, [go-telegram-bot-api.dev](https://go-telegram-bot-api.dev).
The scope of this project is just to provide a wrapper around the API
without any additional features. There are other projects for creating
something with plugins and command handlers without having to design
all that yourself.
Join [the development group](https://telegram.me/go_telegram_bot_api) if
you want to ask questions or discuss development.
## Example
First, ensure the library is installed and up to date by running
`go get -u github.com/go-telegram-bot-api/telegram-bot-api/v5`.
This is a very simple bot that just displays any gotten updates,
then replies it to that chat.
```go
package main
import (
"log"
tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
)
func main() {
bot, err := tgbotapi.NewBotAPI("MyAwesomeBotToken")
if err != nil {
log.Panic(err)
}
bot.Debug = true
log.Printf("Authorized on account %s", bot.Self.UserName)
u := tgbotapi.NewUpdate(0)
u.Timeout = 60
updates := bot.GetUpdatesChan(u)
for update := range updates {
if update.Message != nil { // If we got a message
log.Printf("[%s] %s", update.Message.From.UserName, update.Message.Text)
msg := tgbotapi.NewMessage(update.Message.Chat.ID, update.Message.Text)
msg.ReplyToMessageID = update.Message.MessageID
bot.Send(msg)
}
}
}
```
If you need to use webhooks (if you wish to run on Google App Engine),
you may use a slightly different method.
```go
package main
import (
"log"
"net/http"
"github.com/go-telegram-bot-api/telegram-bot-api/v5"
)
func main() {
bot, err := tgbotapi.NewBotAPI("MyAwesomeBotToken")
if err != nil {
log.Fatal(err)
}
bot.Debug = true
log.Printf("Authorized on account %s", bot.Self.UserName)
wh, _ := tgbotapi.NewWebhookWithCert("https://www.example.com:8443/"+bot.Token, "cert.pem")
_, err = bot.Request(wh)
if err != nil {
log.Fatal(err)
}
info, err := bot.GetWebhookInfo()
if err != nil {
log.Fatal(err)
}
if info.LastErrorDate != 0 {
log.Printf("Telegram callback failed: %s", info.LastErrorMessage)
}
updates := bot.ListenForWebhook("/" + bot.Token)
go http.ListenAndServeTLS("0.0.0.0:8443", "cert.pem", "key.pem", nil)
for update := range updates {
log.Printf("%+v\n", update)
}
}
```
If you need, you may generate a self-signed certificate, as this requires
HTTPS / TLS. The above example tells Telegram that this is your
certificate and that it should be trusted, even though it is not
properly signed.
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 3560 -subj "//O=Org\CN=Test" -nodes
Now that [Let's Encrypt](https://letsencrypt.org) is available,
you may wish to generate your free TLS certificate there.
|
