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panic if stuck in a CONTINUATION frame write loop

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Sean McArthur
2019-05-29 13:43:40 -07:00
parent 90d346bad8
commit e512b6ccb6
1 changed files with 11 additions and 0 deletions
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11
src/codec/framed_write.rs
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@@ -197,6 +197,17 @@ where
Some(Next::Continuation(frame)) => { Some(Next::Continuation(frame)) => {
// Buffer the continuation frame, then try to write again // Buffer the continuation frame, then try to write again
if let Some(continuation) = frame.encode(&mut self.hpack, self.buf.get_mut()) { if let Some(continuation) = frame.encode(&mut self.hpack, self.buf.get_mut()) {
// We previously had a CONTINUATION, and after encoding
// it, we got *another* one? Let's just double check
// that at least some progress is being made...
if self.buf.get_ref().len() == frame::HEADER_LEN {
// If *only* the CONTINUATION frame header was
// written, and *no* header fields, we're stuck
// in a loop...
panic!("CONTINUATION frame write loop; header value too big to encode");
}
self.next = Some(Next::Continuation(continuation)); self.next = Some(Next::Continuation(continuation));
} }
}, },