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ircd::server: Add an optional download progress callback.

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This commit is contained in:
Jason Volk 2018-01-21 04:37:24 -08:00
parent ceed6d5d44
commit 9da18261a6
2 changed files with 13 additions and 0 deletions
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7
include/ircd/server/request.h
View file

@ -56,6 +56,13 @@ struct ircd::server::in
{
mutable_buffer head;
mutable_buffer content {head};
/// The progress closure is an optional callback invoked every time more
/// content is read from the socket. The first argument is a view of the
/// data most recently received. The second argument is a view of all data
/// received so far. This is only invoked for content, not for the head;
/// however the first time it is invoked it is safe to view the in.head
std::function<void (const_buffer, const_buffer) noexcept> progress;
};
/// This is a handle for being a client to another server. This handle will

6
ircd/server.cc
View file

@ -1895,6 +1895,12 @@ ircd::server::tag::read_content(const const_buffer &buffer,
content_read += addl_content_read;
assert(size(buffer) - addl_content_read == 0);
assert(content_read <= size(content) + content_over);
// Invoke the user's optional progress callback; this function
// should be marked noexcept for the time being.
if(req.in.progress)
req.in.progress(buffer, const_buffer{data(content), content_read});
if(content_read == size(content) + content_over)
{
done = true;