Class Netchannels.output_channelSource

Creates an output channel writing into an out_channel. * * The method pos_out reflects the real position in the channel as * returned by Pervasives.pos_out. This works for both seekable and * non-seekable channels. * * The method close_out also closes the underlying out_channel. * There is some implicit logic to either use close_out or close_out_noerr * depending on whether the immediately preceding operation already reported * an error. * *

• parameter onclose

  this function is called when the close_out method is * invoked, just after the underlying out_channel has been closed.