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view src/event/quic/ngx_event_quic_migration.h @ 8801:000b9b048e0c quic

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QUIC: fixed chain returned from ngx_quic_write_chain(). Previously, when input ended on a QUIC buffer boundary, input chain was not advanced to the next buffer. As a result, ngx_quic_write_chain() returned a chain with an empty buffer instead of NULL. This broke HTTP write filter, preventing it from closing the HTTP request and eventually timing out. Now input chain is always advanced to a buffer that has data, before checking QUIC buffer boundary condition.
author Roman Arutyunyan <arut@nginx.com>
date Tue, 25 Jan 2022 09:45:50 +0300
parents 1e2f4e9c8195
children fab36e4abf83
line wrap: on
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/*
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_
#define _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>

#define NGX_QUIC_PATH_RETRIES   3

#define NGX_QUIC_PATH_PROBE     0
#define NGX_QUIC_PATH_ACTIVE    1
#define NGX_QUIC_PATH_BACKUP    2

#define ngx_quic_path_dbg(c, msg, path)                                       \
    ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0,                            \
                   "quic path#%uL %s sent:%O recvd:%O state:%s%s%s",          \
                   path->seqnum, msg, path->sent, path->received,             \
                   path->limited ? "L" : "", path->validated ? "V": "N",      \
                   path->validating ? "R": "");

ngx_int_t ngx_quic_handle_path_challenge_frame(ngx_connection_t *c,
    ngx_quic_header_t *pkt, ngx_quic_path_challenge_frame_t *f);
ngx_int_t ngx_quic_handle_path_response_frame(ngx_connection_t *c,
    ngx_quic_path_challenge_frame_t *f);

ngx_quic_path_t *ngx_quic_new_path(ngx_connection_t *c,
    struct sockaddr *sockaddr, socklen_t socklen, ngx_quic_client_id_t *cid);
ngx_int_t ngx_quic_free_path(ngx_connection_t *c, ngx_quic_path_t *path);

ngx_int_t ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt);
ngx_int_t ngx_quic_handle_migration(ngx_connection_t *c,
    ngx_quic_header_t *pkt);

void ngx_quic_path_validation_handler(ngx_event_t *ev);

#endif /* _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ */