What happens to the request if the internet connection is lost after it has been sent?

The connection can be broken, leading to a network error (e.g., IOException or a specific HTTP client error). The library used for the request (e.g., Retrofit with OkHttp) usually throws an exception. Behavior may vary slightly depending on the library and its settings. If part of the data has already been transmitted, the server may process the incomplete request or also report an error. It is important to implement network error handling logic (retry, fallback, etc.) to improve app reliability.