Implement async HTTP responses

Sometimes, library users cannot return a HTTP response as soon as the
request is received, or the operations that are required to generate it
can take a long time.

In order to solve this, libweb adds a new member to struct
http_response, namely step, which must be assigned to a function
whenever a HTTP response should be generated in a non-blocking manner.
Leaving the function pointer as null will fall back to the default
behaviour.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/libweb/http.h b/include/libweb/http.h
index 736a561..f18b5c4 100644
--- a/include/libweb/http.h
+++ b/include/libweb/http.h
@@ -109,6 +109,7 @@ struct http_response
     unsigned long long n;
     size_t n_headers;
     void (*free)(void *);
+    int (*step)(const struct http_payload *, struct http_response *, void *);
 };
 
 struct http_cfg