24 lines
892 B
Diff
24 lines
892 B
Diff
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--- modules/filters/mod_deflate.c.orig
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+++ modules/filters/mod_deflate.c
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@@ -582,6 +582,20 @@ static apr_status_t deflate_out_filter(a
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apr_bucket *b;
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apr_size_t len;
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+ /*
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+ * Optimization: If we are a HEAD request and bytes_sent is not zero
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+ * it means that we have passed the content-length filter once and
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+ * have more data to sent. This means that the content-length filter
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+ * could not determine our content-length for the response to the
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+ * HEAD request anyway (the associated GET request would deliver the
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+ * body in chunked encoding) and we can stop compressing.
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+ */
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+ if (r->header_only && r->bytes_sent) {
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+ ap_remove_output_filter(f);
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+ return ap_pass_brigade(f->next, bb);
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+ }
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+
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+
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e = APR_BRIGADE_FIRST(bb);
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if (APR_BUCKET_IS_EOS(e)) {
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