Serving static files from several folders

[javValverde]

For serving static files, the following is used:
svr.set_base_dir("./folder1");

If I have folder2 from which I also want to serve files, is it possible?

I found this example using express.js, and it is exactly what I want to do

[yhirose]

@javValverde, thanks for the feedback! It's not possible with the current httplib.h. Please see the following code:

cpp-httplib/httplib.h

Line 573 in 6f58dc7

std::string base_dir_;

I could change std::string base_dir_ to be an array like std::vector<std::string> base_dirs_. so that you could do the following:

svr.set_base_dir("./folder1");
svr.set_base_dir("./folder2");

But, the above behavior may confuse users, because they may expect that the second call will change the base directory instead of adding it. I'll ponder over better API to accomplish this feature.

Just for your information: I checked the stackoverflow post. They can mount a directory to whatever path like '/public', but unfortunately svr.set_base_dir always mounts a directory to the root path '/'.

[PixlRainbow]

perhaps have two parameters, the first parameter being path to folder, and the second being the mounted path? The second parameter would be optional and default to "/". If the same mounted path is used again, it will replace. This could be implemented using std::unordered_map<std::string, std::string>

[javValverde]

Thank you guys for the quick answer.

I think what @PixlRainbow suggests is really neat. It would support my usecase and wouldn't break the existing API. In my opinion adding an extra function is not neccessary

[yhirose]

I added the 'mounting point' parameter to set_base_dir. The default value is "/".

So we now can do like this:

svr.set_base_dir("./folder1", "aaa");
svr.set_base_dir("./folder2", "bbb");

If we set a mounting point to more than one directories, cpp-httplib will try to find the specified file in the directories in the registered older. If you do the following, all three directories are mapped to the public, and cpp-httplib will try to look ./folder1 first.

svr.set_base_dir("./folder1", "public");
svr.set_base_dir("./folder2", "public");
svr.set_base_dir("./folder3", "public");

This behavior is exactly same as express.js. So I understand the method name is now a bit confusing, but I think it's acceptable.

Thanks for the feature request!