The asynchronous version of DataInputStream.readLine. It is an error to have two outstanding calls to this function.
When the operation is finished, callback will be called. You can then call DataInputStream.readLineFinish to get the result of the operation.
the [I/O priority][io-priority] of the request
optional gio.Cancellable object, NULL to ignore.
callback to call when the request is satisfied.
the data to pass to callback function.
2.20
The asynchronous version of DataInputStream.readLine. It is an error to have two outstanding calls to this function.
When the operation is finished, callback will be called. You can then call DataInputStream.readLineFinish to get the result of the operation.