This change increases the maximum message size to 4MB to be inline
with the grpc default. The buffer management approach has been changed
to use a pool to minimize allocations and keep memory usage low.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
With this changeset, ttrpc can now handle mutliple outstanding requests
and responses on the same connection without blocking. On the
server-side, we dispatch a goroutine per outstanding reequest. On the
client side, a management goroutine dispatches responses to blocked
waiters.
The protocol has been changed to support this behavior by including a
"stream id" that can used to identify which request a response belongs
to on the client-side of the connection. With these changes, we should
also be able to support streams in the future.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
A varint prefixed framing format is defined for transport messages for
mgrpc. We may make changes to include a more structured frame, but this
initial work can be used to validate the concepts.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
