For now, the options are "jpeg" and "png". Gif is a little harder to
support because of the way we use the image/gif package to handle
animated gifs. I have also have trouble imagining someone wanting to use
gif over png. But if the need really exists, we can address it when it
comes up.
Fixes#89
Adds a -timeout flag for specifying the timeout. Currently, this
returns a 503 response on timeout, though it should really be a 504,
since imageproxy is acting as a gateway.
Ref: #75
If imageproxy runs behind an http.ServeMux or certain web servers, the
double slash in the remote URL will get collapsed down to a single
slash. (e.g. http://example.com/ becomes http:/example.com/). This
is now handled by imageproxy directly.
Ref #65
This pointer was only needed to pass along the scaleUp option. In order
to prevent someone from specifying the scaleUp option on an individual
request against the owner's wishes, we didn't encode or decode that
field on the Options struct. Instead, we stored the value on the Proxy
object and then set it on the Options struct inside the
TransformingTransport. This worked, but I never really liked binding
those two together.
Instead, we now treat scaleUp as a normal Option field, encoding and
decoding it with all the others. The primary difference is that the
initial value from the request URL will always be overwritten with
whatever is set in Proxy.ScaleUp. This decouples the
TransformingTransport from the Proxy, but prevents the option from being
set in the request URL.
Modifies #37
it doesn't matter too much right now, given the headers that are being
copied, but this now makes sure that all header values get copied over
if multiple are present.
Remove unused ResponseWriter parameter from check304, add function docs,
and add TODO for alternate Etag header values that we should handle.
Add tests for Proxy.allowed and check304.
