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MINOR: h2: expose tune.h2.header-table-size to configure the table size

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It's the HPACK header table size which is to be advertised in the settings
frames. It defaults to 4096.
This commit is contained in:
Willy Tarreau 2017-07-27 11:42:14 +02:00
parent 62f5269d05
commit fe20e5b8c7
2 changed files with 28 additions and 0 deletions
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8
doc/configuration.txt
View File

@ -599,6 +599,7 @@ The following keywords are supported in the "global" section :
- tune.bufsize
- tune.chksize
- tune.comp.maxlevel
- tune.h2.header-table-size
- tune.http.cookielen
- tune.http.logurilen
- tune.http.maxhdr
@ -1367,6 +1368,13 @@ tune.comp.maxlevel <number>
Each session using compression initializes the compression algorithm with
this value. The default value is 1.
tune.h2.header-table-size <number>
Sets the HTTP/2 dynamic header table size. It defaults to 4096 bytes and
cannot be larger than 65536 bytes. A larger value may help certain clients
send more compact requests, depending on their capabilities. This amount of
memory is consumed for each HTTP/2 connection. It is recommended not to
change it.
tune.http.cookielen <number>
Sets the maximum length of captured cookies. This is the maximum value that
the "capture cookie xxx len yyy" will be allowed to take, and any upper value

20
src/mux_h2.c
View File

@ -16,6 +16,10 @@
#include <proto/stream.h>
/* a few settings from the global section */
static int h2_settings_header_table_size = 4096; /* initial value */
/*****************************************************************/
/* functions below are dedicated to the mux setup and management */
/*****************************************************************/
@ -126,6 +130,21 @@ static int h2_snd_buf(struct conn_stream *cs, struct buffer *buf, int flags)
/* functions below are dedicated to the config parsers */
/*******************************************************/
/* config parser for global "tune.h2.header-table-size" */
static int h2_parse_header_table_size(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (too_many_args(1, args, err, NULL))
return -1;
h2_settings_header_table_size = atoi(args[1]);
if (h2_settings_header_table_size < 4096 || h2_settings_header_table_size > 65536) {
memprintf(err, "'%s' expects a numeric value between 4096 and 65536.", args[0]);
return -1;
}
return 0;
}
/****************************************/
@ -155,6 +174,7 @@ static struct alpn_mux_list alpn_mux_h2 =
/* config keyword parsers */
static struct cfg_kw_list cfg_kws = {ILH, {
{ CFG_GLOBAL, "tune.h2.header-table-size", h2_parse_header_table_size },
{ 0, NULL, NULL }
}};