Some servers take a long time to answer and expect us to keep sending
want lines; otherwise they close the connection. Avoid this by waiting
for one second for the server to answer. If the timeout runs out,
treat is as a NAK and keep sending want lines.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Only signal that we need a pack if we do need it and don't send a want
just because it's the first. If we don't need to download the pack,
then we can skip all of the negotiation and just return success.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

There are many ways how a transport might negotiate with the server,
so instead of making it fit into the smart protocol model, let the
transport do its thing. For now, the git protocol limits itself to
send only 160 "have" lines so we don't flood the server.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

The original was written before any code was written and had nothing
to do with the way things are actually done.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

This is what the docs say tha we should use.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

There is no need to inspect what the local repository is like. Only
check whether the objects exist locally.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Instead, use flags inside the git_remote_head structure.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Make sure we only try to download the pack if we find the pack header
in the stream, and not if the server takes a bit longer to send us the
last NAK.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

This function updates the references in the local reference storage to
match the ones in the remote.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

When indexing a file with ref deltas, a temporary cache for the
offsets has to be built, as we don't have an index file yet. If the
user takes the responsiblity for filling the cache, the packing code
will look there first when it finds a ref delta.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Provide the git_remote_download function to instruct the library to
downlad the packfile and let the user know the temporary location.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Move the generation of the want-list to be done from the negotiate
function, and keep the filtered references inside the remote
structure.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Configurations when taken from a repository and remotes should be
identifiable as coming from a particular repository. This allows us to
reduce the amount of variables that the user has to keep track of.

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

cleanup: some nitpicking and missing free's.

Signed-off-by: schu <schu-github@schulog.org>

Signed-off-by: schu <schu-github@schulog.org>

Signed-off-by: schu <schu-github@schulog.org>

Signed-off-by: schu <schu-github@schulog.org>

Signed-off-by: schu <schu-github@schulog.org>

Signed-off-by: schu <schu-github@schulog.org>

Fix the reference character check for Unicode

We need to do an unsigned comparison, as otherwise UTF-8 characters
might look like they have the sign bit set and the check will fail.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

reflog: assimilate API

Make sure to free the existing reflog when we run out or memory while
adding new entries.

Signed-off-by: schu <schu-github@schulog.org>

Rather than returning the OIDs out of the reflog as string return them
as git_oid.

Signed-off-by: schu <schu-github@schulog.org>

Add missing GIT_BEGIN_DECL and GIT_END_DECL to indexer header