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fix: httpx.Client is slow when sending large data #3661

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fix: httpx.Client is slow when sending large data #3661

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fix: httpx.Client is slow when sending large data
xiexianbin Sep 7, 2025
41585ae
Merge branch 'master' into fix/slow-for-big-body
xiexianbin Oct 4, 2025
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6 changes: 5 additions & 1 deletion httpx/_content.py
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Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,11 @@ def __iter__(self) -> Iterator[bytes]:
else:
# Otherwise iterate.
for part in self._stream:
yield part
# For bytes types, should use yield to send data in
# chunks. Sending a very large part at once will
# result in extremely slow transmission.
for i in range(0, len(part), self.CHUNK_SIZE):
yield part[i : i + self.CHUNK_SIZE]


class AsyncIteratorByteStream(AsyncByteStream):
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