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Shrink to the minimum table size seen in local SETTINGS

This commit is contained in:
Tatsuhiro Tsujikawa 2015-10-24 13:41:47 +09:00
parent 7eddf1975e
commit 5bc3dfa1cd
1 changed files with 13 additions and 1 deletions
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14
lib/nghttp2_session.c
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@ -3892,13 +3892,17 @@ int nghttp2_session_update_local_settings(nghttp2_session *session,
size_t i; size_t i;
int32_t new_initial_window_size = -1; int32_t new_initial_window_size = -1;
uint32_t header_table_size = 0; uint32_t header_table_size = 0;
uint32_t min_header_table_size = UINT32_MAX;
uint8_t header_table_size_seen = 0; uint8_t header_table_size_seen = 0;
/* Use the value last seen. */ /* For NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, use the value last
seen. For NGHTTP2_SETTINGS_HEADER_TABLE_SIZE, use both minimum
value and last seen value. */
for (i = 0; i < niv; ++i) { for (i = 0; i < niv; ++i) {
switch (iv[i].settings_id) { switch (iv[i].settings_id) {
case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
header_table_size_seen = 1; header_table_size_seen = 1;
header_table_size = iv[i].value; header_table_size = iv[i].value;
min_header_table_size = nghttp2_min(min_header_table_size, iv[i].value);
break; break;
case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
new_initial_window_size = (int32_t)iv[i].value; new_initial_window_size = (int32_t)iv[i].value;
@ -3906,6 +3910,14 @@ int nghttp2_session_update_local_settings(nghttp2_session *session,
} }
} }
if (header_table_size_seen) { if (header_table_size_seen) {
if (min_header_table_size < header_table_size) {
rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater,
min_header_table_size);
if (rv != 0) {
return rv;
}
}
rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater, rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater,
header_table_size); header_table_size);
if (rv != 0) { if (rv != 0) {