Bill Marrs wrote: [...]
You would probably wish to append your script with additional output after the empty string? Something like:
#!/usr/bin/perl $|=1; print "Content-Type: text/html\n\n"; print "hello world<P>"; # This line causes the error (?) print ""; print "hello again<P>"; ---
When I do this, the mod_perl variant of the script fails to print "hello again<P>".
mod_cgi prints everything just fine and gets no errors.
I changed my test script to print a bunch of `date`'s http://shevek.kenyonhill.com/cgi/test.pl http://shevek.kenyonhill.com/perl/test.pl
Sorry for getting late to this thread, this is a bug in mod_deflate. You don't see it in mod_cgi, because mod_cgi doesn't really handle buffering and flushing, since it just reads the data from the pipe to the process. mod_deflate didn't follow the deflate() spec, saying that the caller shouldn't call deflate, when there is no data to deflate. Try this patch:
Index: modules/filters/mod_deflate.c =================================================================== RCS file: /home/cvs/httpd-2.0/modules/filters/mod_deflate.c,v retrieving revision 1.26.2.5 diff -u -r1.26.2.5 mod_deflate.c --- modules/filters/mod_deflate.c 17 May 2003 18:27:43 -0000 1.26.2.5 +++ modules/filters/mod_deflate.c 5 Aug 2003 06:37:59 -0000 @@ -529,9 +529,11 @@
if (APR_BUCKET_IS_FLUSH(e)) {
apr_bucket *bkt;
- zRC = deflate(&(ctx->stream), Z_SYNC_FLUSH);
- if (zRC != Z_OK) {
- return APR_EGENERAL;
+ if (ctx->stream.avail_in > 0) {
+ zRC = deflate(&(ctx->stream), Z_SYNC_FLUSH);
+ if (zRC != Z_OK) {
+ return APR_EGENERAL;
+ }
}ctx->stream.next_out = ctx->buffer;
Feel free to submit this bug report and the fix to httpd-dev. Please let me know if you do that, so I won't duplicate it. But I'd prefer that you do it so you can make sure that it gets fixed in the next release, since you need it working.
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