Fix: Skip Content-Length for progress tracking when Content-Encoding … #1692
+45
−4
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…is present
When Content-Encoding (e.g., gzip) is set, Content-Length represents the compressed size, but requests library automatically decompresses the response. This caused a mismatch where downloaded bytes exceeded Content-Length, leading to false 'Incomplete download' errors.
The fix skips using Content-Length for progress tracking when Content-Encoding header is present, since the decoded size will differ from the encoded size.
Added test case to verify this behavior.
Fixes #1642