send_file: Make sure send file header value contains the right amount of slashes

1 files changed, 5 insertions, 1 deletions

diff --git a/src/send_file.cc b/src/send_file.cc
index 8611b6f..e5bf92b 100644
--- a/src/send_file.cc
+++ b/src/send_file.cc
@@ -29,7 +29,11 @@ public:
     }
 
     auto resp = transport->create_ok_data("");
-    resp->add_header(header_, path_ + std::string(relative_path));
+    std::string value = path_;
+    if (relative_path.empty() || relative_path.front() != '/')
+      value.push_back('/');
+    value.append(relative_path);
+    resp->add_header(header_, std::move(value));
     return resp;
   }