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MINOR: h2: expose tune.h2.initial-window-size to configure the window size

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This will be advertised in the settings frame.
This commit is contained in:
Willy Tarreau 2017-07-27 11:45:11 +02:00
parent fe20e5b8c7
commit e6baec0e23
2 changed files with 29 additions and 0 deletions
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11
doc/configuration.txt
View File

@ -600,6 +600,7 @@ The following keywords are supported in the "global" section :
- tune.chksize
- tune.comp.maxlevel
- tune.h2.header-table-size
- tune.h2.initial-window-size
- tune.http.cookielen
- tune.http.logurilen
- tune.http.maxhdr
@ -1375,6 +1376,16 @@ tune.h2.header-table-size <number>
memory is consumed for each HTTP/2 connection. It is recommended not to
change it.
tune.h2.initial-window-size <number>
Sets the HTTP/2 initial window size, which is the number of bytes the client
can upload before waiting for an acknowledgement from haproxy. This setting
only affects payload contents (ie: the body of POST requests), not headers.
The default value is 65535, which roughly allows up to 5 Mbps of upload
bandwidth per client over a network showing a 100 ms ping time, or 500 Mbps
over a 1-ms local network. It can make sense to increase this value to allow
faster uploads, or to reduce it to increase fairness when dealing with many
clients. It doesn't affect resource usage.
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

18
src/mux_h2.c
View File

@ -18,6 +18,7 @@
/* a few settings from the global section */
static int h2_settings_header_table_size = 4096; /* initial value */
static int h2_settings_initial_window_size = 65535; /* initial value */
/*****************************************************************/
@ -146,6 +147,22 @@ static int h2_parse_header_table_size(char **args, int section_type, struct prox
return 0;
}
/* config parser for global "tune.h2.initial-window-size" */
static int h2_parse_initial_window_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_initial_window_size = atoi(args[1]);
if (h2_settings_initial_window_size < 0) {
memprintf(err, "'%s' expects a positive numeric value.", args[0]);
return -1;
}
return 0;
}
/****************************************/
/* MUX initialization and instanciation */
@ -175,6 +192,7 @@ 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 },
{ CFG_GLOBAL, "tune.h2.initial-window-size", h2_parse_initial_window_size },
{ 0, NULL, NULL }
}};