IOClient class

A dart:io-based HTTP Client.

If there is a socket-level failure when communicating with the server (for example, if the server could not be reached), IOClient will emit a ClientException that also implements SocketException. This allows callers to get more detailed exception information for socket-level failures, if desired.

For example:

final client = http.Client();
late String data;
try {
  data = await client.read(Uri.https('example.com', ''));
} on SocketException catch (e) {
  // Exception is transport-related, check `e.osError` for more details.
} on http.ClientException catch (e) {
  // Exception is HTTP-related (e.g. the server returned a 404 status code).
  // If the handler for `SocketException` were removed then all exceptions
  // would be caught by this handler.
}