lib-oauth2: Add missing content-type header

diff --git a/src/lib-oauth2/oauth2-introspect.c b/src/lib-oauth2/oauth2-introspect.c
index e3f555fb44a1f796f75e3d7355929787dab05986..f3bd70489d93243c20c2e6e6d2a10562c7d12a82 100644 (file)
--- a/src/lib-oauth2/oauth2-introspect.c
+++ b/src/lib-oauth2/oauth2-introspect.c
@@ -102,6 +102,8 @@ oauth2_introspection_start(const struct oauth2_settings *set,
                enc = t_str_new(strlen(input->token)+6);
                str_append(enc, "token=");
                http_url_escape_param(enc, input->token);
+               http_client_request_add_header(req->req, "Content-Type",
+                                              "application/x-www-form-urlencoded");
                http_client_request_set_payload_data(req->req, enc->data, enc->used);
        } else {
                req->req = http_client_request_url(req->set->client, "GET", url,