add CURLINFO_SCHEME, CURLINFO_PROTOCOL, and %{scheme}

Adds access to the effectively used protocol/scheme to both libcurl and
curl, both in string and numeric (CURLPROTO_*) form.

Note that the string form will be uppercase, as it is just the internal
string.

As these strings are declared internally as const, and all other strings
returned by curl_easy_getinfo() are de-facto const as well, string
handling in getinfo.c got const-ified.

Closes #1137

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/urldata.h b/lib/urldata.h
index 6e548285b..05f600319 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1174,6 +1174,9 @@ struct PureInfo {
   char conn_local_ip[MAX_IPADR_LEN];
   long conn_local_port;
 
+  const char *conn_scheme;
+  unsigned int conn_protocol;
+
   struct curl_certinfo certs; /* info about the certs, only populated in
                                  OpenSSL builds. Asked for with
                                  CURLOPT_CERTINFO / CURLINFO_CERTINFO */