[PATCH 1/4] http.h: Add debug callback and helper routine for implementing the GIT_TRACE_CURL environment variable in http.c

[Elia Pinto <gitter.spiros@gmail.com>]

Add the debug callback and helper routine prototype used by
curl_easy_setopt CURLOPT_DEBUGFUNCTION in http.c
for implementing the GIT_TRACE_CURL environment variable


Helped-by: Torsten Bögershausen <tboegi@web.de>
Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com> 
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
---
 http.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/http.h b/http.h
index 4ef4bbd..a2d10bc 100644
--- a/http.h
+++ b/http.h
@@ -224,4 +224,10 @@ extern int finish_http_object_request(struct http_object_request *freq);
 extern void abort_http_object_request(struct http_object_request *freq);
 extern void release_http_object_request(struct http_object_request *freq);
 
+/* Debug callback and helper routine for curl_easy_setopt CURLOPT_DEBUGFUNCTION */
+static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
+int curl_trace(CURL *handle, curl_infotype type, char *data, size_t size, void *userp);
+void curl_dump(const char *text, unsigned char *ptr, size_t size, char nohex);
+
+
 #endif /* HTTP_H */
-- 
2.5.0