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d1ac2b90cd
The EOM block may be removed. The HTX_FL_EOM flags is enough. Most of time, to know if the end of the message is reached, we just need to have an empty HTX message with HTX_FL_EOM flag set. It may also be detected when the last block of a message with HTX_FL_EOM flag is manipulated. Removing EOM blocks simplifies the HTX message filling. Indeed, there is no more edge problems when the message ends but there is no more space to write the EOM block. However, some part are more tricky. Especially the compression filter or the FCGI mux. The compression filter must finish the compression on the last DATA block. Before it was performed on the EOM block, an extra DATA block with the checksum was added. Now, we must detect the last DATA block to be sure to finish the compression. The FCGI mux on its part must be sure to reserve the space for the empty STDIN record on the last DATA block while this record was inserted on the EOM block. The H2 multiplexer is probably the part that benefits the most from this change. Indeed, it is now fairly easier to known when to set the ES flag. The HTX documentaion has been updated accordingly.
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/*
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* include/haproxy/h1_htx.h
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* This file defines function prototypes for H1 manipulation using the
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* internal representation.
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*
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* Copyright (C) 2019 HAProxy Technologies, Christopher Faulet <cfaulet@haproxy.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_H1_HTX_H
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#define _HAPROXY_H1_HTX_H
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#include <import/ist.h>
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#include <haproxy/api-t.h>
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#include <haproxy/buf-t.h>
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#include <haproxy/h1.h>
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#include <haproxy/htx-t.h>
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int h1_parse_msg_hdrs(struct h1m *h1m, union h1_sl *h1sl, struct htx *dsthtx,
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struct buffer *srcbuf, size_t ofs, size_t max);
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int h1_parse_msg_data(struct h1m *h1m, struct htx **dsthtx,
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struct buffer *srcbuf, size_t ofs, size_t max,
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struct buffer *htxbuf);
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int h1_parse_msg_tlrs(struct h1m *h1m, struct htx *dsthtx,
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struct buffer *srcbuf, size_t ofs, size_t max);
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int h1_format_htx_reqline(const struct htx_sl *sl, struct buffer *chk);
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int h1_format_htx_stline(const struct htx_sl *sl, struct buffer *chk);
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int h1_format_htx_hdr(const struct ist n, const struct ist v, struct buffer *chk);
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int h1_format_htx_data(const struct ist data, struct buffer *chk, int chunked);
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#endif /* _HAPROXY_H1_HTX_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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