RequestServer: Do not crash on Gemini responses

Starting a gemini request creates a pipe for the output stream for the
response, and a Core::Stream::File object is created from that pipe.
Previously, the length of the response was computed by calling
output_stream.size() which used lseek on the file descriptor. Doing that
returned an error from lseek. Computing the value by counting the
received bytes (via Gemini::Job::response_length) avoids that crash.

1 files changed, 1 insertions, 1 deletions

diff --git a/Userland/Services/RequestServer/GeminiRequest.cpp b/Userland/Services/RequestServer/GeminiRequest.cpp
index 0ec84e7387..048338f30e 100644
--- a/Userland/Services/RequestServer/GeminiRequest.cpp
+++ b/Userland/Services/RequestServer/GeminiRequest.cpp
@@ -21,7 +21,7 @@ GeminiRequest::GeminiRequest(ConnectionFromClient& client, NonnullRefPtr<Gemini:
             ConnectionCache::request_did_finish(url, socket);
         });
         if (auto* response = m_job->response()) {
-            set_downloaded_size(MUST(const_cast<Core::Stream::File&>(this->output_stream()).size()));
+            set_downloaded_size(MUST(m_job->response_length()));
             if (!response->meta().is_empty()) {
                 HashMap<DeprecatedString, DeprecatedString, CaseInsensitiveStringTraits> headers;
                 headers.set("meta", response->meta());