fetchWithProgress(progressBlock)
</b>
<p>
<div class=slotDescription>
Same as fetch, but with each read, progressBlock is called with the readBuffer 
	and the content size as parameters.
</div>
<font color=#888>
<a name="URL-headerBreaks"></a><b>
headerBreaks
</b>
<p>
<div class=slotDescription>
Private method to connect to the host and write the header.
</font>
</div>
<a name="URL-openOnDesktop"></a><b>
openOnDesktop
</b>
<p>
<div class=slotDescription>
Opens the URL in the local default browser. Supports 