settings_build.h

#ifndef H3SETTINGS_SETTINGS_BUILD_H
#define H3SETTINGS_SETTINGS_BUILD_H
 
#include "common/bytes/span/span.h"
#include "common/platform/sys/syscall.h"

typedef struct {
  u64 max_field_section_size;
  u64 qpack_max_table_capacity;
  u64 qpack_blocked_streams;
  u64 enable_connect_protocol;
  u64 enable_h3_datagram;
  u64 wt_max_sessions;
  u64 grease_id;
  u64 wt_initial_max_streams_uni;
  u64 wt_initial_max_streams_bidi;
  u64 wt_initial_max_data;
} h3settings_in;
 
/* RFC 9114 7.2.4: build a SETTINGS frame carrying the three common settings
 * (MAX_FIELD_SECTION_SIZE 0x06, QPACK_MAX_TABLE_CAPACITY 0x01,
 * QPACK_BLOCKED_STREAMS 0x07), plus SETTINGS_ENABLE_CONNECT_PROTOCOL (RFC 9220
 * 3, id 0x08) when in->enable_connect_protocol is non-zero, SETTINGS_H3_
 * DATAGRAM (RFC 9297 2.1.1, id 0x33) when in->enable_h3_datagram is non-zero,
 * and SETTINGS_WEBTRANSPORT_MAX_SESSIONS (draft-ietf-webtrans-http3 8.2, id
 * 0xc671706a) when in->wt_max_sessions is non-zero. Returns 1 ok with
 * out->len set, 0 if no room. */
int h3settings_build(const h3settings_in* in, wired_obuf* out);
 
#endif