add note about slf4j and proxy setup

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InsanusMokrassar 2023-09-11 19:41:03 +06:00
parent 9be8019a4b
commit 74b8b22bb7
2 changed files with 53 additions and 0 deletions

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# FAQ # FAQ
## What is the error `Failed to load class "org.slf4j.impl.StaticLoggerBinder"`?
```
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
```
This error is just a warning about the absence of [slf4j](https://www.slf4j.org) setup. You may fix this error
by following to [stackoverflow answer](https://stackoverflow.com/a/9919375)
---
## How to filter updates in some part of `BehaviourBuilder`? ## How to filter updates in some part of `BehaviourBuilder`?
You may create subcontext with You may create subcontext with

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3. `ktorClientEngineFactory = OkHttp` - setting up engine factory of our bot. On the time of documentation filling, `OkHttp` is one of the engines in `Ktor` system which supports socks proxy. More you can read on [Ktor](https://ktor.io) site in subparts about [engines](https://ktor.io/clients/http-client/engines.html#okhttp) and [proxy](https://ktor.io/clients/http-client/features/proxy.html) 3. `ktorClientEngineFactory = OkHttp` - setting up engine factory of our bot. On the time of documentation filling, `OkHttp` is one of the engines in `Ktor` system which supports socks proxy. More you can read on [Ktor](https://ktor.io) site in subparts about [engines](https://ktor.io/clients/http-client/engines.html#okhttp) and [proxy](https://ktor.io/clients/http-client/features/proxy.html)
4. `proxy = ProxyBuilder.socks("127.0.0.1", 1080)` - here we are setting up our proxy. Here was used local server which (as assumed) will connect to server like `shadowsocks` 4. `proxy = ProxyBuilder.socks("127.0.0.1", 1080)` - here we are setting up our proxy. Here was used local server which (as assumed) will connect to server like `shadowsocks`
## More complex and flexible variant
You may try to use [custom engine for ktor](https://ktor.io/docs/http-client-engines.html). For example:
```kotlin
// JVM
// OkHttp engine
// Socks5 proxy
val bot = telegramBot(botToken) {
val proxyPort = 1080 //your proxy port
val proxyHost = "your proxy host"
val username = "proxy username"
val password = "proxy password"
val proxyAddr = InetSocketAddress(proxyHost, proxyPort)
val proxy = Proxy(Proxy.Type.SOCKS, proxyAddr)
Authenticator.setDefault(object : Authenticator() {
protected val passwordAuthentication: PasswordAuthentication?
protected get() {
if (requestingHost.lowercase() == proxyHost.lowercase()) {
if (proxyPort == requestingPort) {
return PasswordAuthentication(username, password.toCharArray())
}
}
return null
}
})
this.client = HttpClient(OkHttp) {
engine {
config {
proxy(proxy)
}
}
}
}
```
## Next steps ## Next steps
* [First bot](first-bot.md) * [First bot](first-bot.md)