Camel.Stream.write_to_stream

### Method

# Camel Streamwrite_to_stream

#### Declaration [src]

    gssize
    camel_stream_write_to_stream (
      CamelStream* stream,
      CamelStream* output_stream,
      GCancellable* cancellable,
      GError** error
    )

#### Description [src]

Write all of a stream (until eos) into another stream, in a blocking fashion.

#### Parameters

`output_stream`

  Type: `CamelStream`

  Destination `CamelStream` object.

  The data is owned by the caller of the method.

`cancellable`

  Type: `GCancellable`

  Optional `GCancellable` object, or `NULL`.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`error`

  Type: `GError **`

  The return location for a recoverable error.

  The argument can be `NULL`.
  If the return location is not `NULL`, then you must initialize it to a `NULL` `GError*`.
  The argument will be left initialized to `NULL` by the method if there are no errors.
  In case of error, the argument will be set to a newly allocated `GError`; the caller will take ownership of the data, and be responsible for freeing it.

#### Return value

Type: `gssize`

-1 on error, or the number of bytes successfully copied across streams.