Mercurial > hg > nginx
view src/event/quic/ngx_event_quic_socket.c @ 8924:d6ef13c5fd8e quic
QUIC: simplified configuration.
Directives that set transport parameters are removed from the configuration.
Corresponding values are derived from the quic configuration or initialized
to default. Whenever possible, quic configuration parameters are taken from
higher-level protocol settings, i.e. HTTP/3.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Mon, 06 Dec 2021 15:19:54 +0300 |
parents | aae8b91e0280 |
children | ddd5e5c0f87d |
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/* * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #include <ngx_event_quic_connection.h> static ngx_int_t ngx_quic_create_temp_socket(ngx_connection_t *c, ngx_quic_connection_t *qc, ngx_str_t *dcid, ngx_quic_path_t *path, ngx_quic_client_id_t *cid); ngx_int_t ngx_quic_open_sockets(ngx_connection_t *c, ngx_quic_connection_t *qc, ngx_quic_header_t *pkt) { ngx_quic_path_t *path; ngx_quic_socket_t *qsock; ngx_quic_client_id_t *cid; /* * qc->nclient_ids = 0 * qc->nsockets = 0 * qc->max_retired_seqnum = 0 * qc->client_seqnum = 0 */ ngx_queue_init(&qc->sockets); ngx_queue_init(&qc->free_sockets); ngx_queue_init(&qc->paths); ngx_queue_init(&qc->free_paths); ngx_queue_init(&qc->client_ids); ngx_queue_init(&qc->free_client_ids); qc->tp.original_dcid.len = pkt->odcid.len; qc->tp.original_dcid.data = ngx_pstrdup(c->pool, &pkt->odcid); if (qc->tp.original_dcid.data == NULL) { return NGX_ERROR; } /* socket to use for further processing */ qsock = ngx_quic_alloc_socket(c, qc); if (qsock == NULL) { return NGX_ERROR; } /* socket is listening at new server id (autogenerated) */ if (ngx_quic_listen(c, qc, qsock) != NGX_OK) { return NGX_ERROR; } qc->tp.initial_scid.len = qsock->sid.len; qc->tp.initial_scid.data = ngx_pnalloc(c->pool, qsock->sid.len); if (qc->tp.initial_scid.data == NULL) { goto failed; } ngx_memcpy(qc->tp.initial_scid.data, qsock->sid.id, qsock->sid.len); /* for all packets except first, this is set at udp layer */ c->udp = &qsock->udp; /* ngx_quic_get_connection(c) macro is now usable */ /* we have a client identified by scid */ cid = ngx_quic_create_client_id(c, &pkt->scid, 0, NULL); if (cid == NULL) { goto failed; } /* the client arrived from this path */ path = ngx_quic_add_path(c, c->sockaddr, c->socklen); if (path == NULL) { goto failed; } if (pkt->validated) { path->state = NGX_QUIC_PATH_VALIDATED; path->validated_at = ngx_time(); } /* now bind socket to client and path */ ngx_quic_connect(c, qsock, path, cid); if (ngx_quic_create_temp_socket(c, qc, &pkt->odcid, path, cid) != NGX_OK) { goto failed; } /* use this socket as default destination */ qc->socket = qsock; ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic active socket is #%uL:%uL:%uL (%s)", qsock->sid.seqnum, qsock->cid->seqnum, qsock->path->seqnum, ngx_quic_path_state_str(qsock->path)); return NGX_OK; failed: ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node); c->udp = NULL; return NGX_ERROR; } static ngx_int_t ngx_quic_create_temp_socket(ngx_connection_t *c, ngx_quic_connection_t *qc, ngx_str_t *dcid, ngx_quic_path_t *path, ngx_quic_client_id_t *cid) { ngx_str_t id; ngx_quic_socket_t *qsock; ngx_quic_server_id_t *sid; qsock = ngx_quic_alloc_socket(c, qc); if (qsock == NULL) { return NGX_ERROR; } sid = &qsock->sid; sid->seqnum = NGX_QUIC_UNSET_PN; /* mark socket as temporary */ sid->len = dcid->len; ngx_memcpy(sid->id, dcid->data, dcid->len); id.len = sid->len; id.data = sid->id; ngx_insert_udp_connection(c, &qsock->udp, &id); ngx_queue_insert_tail(&qc->sockets, &qsock->queue); qc->nsockets++; qsock->quic = qc; ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic socket #%L listening at sid:%xV nsock:%ui", (int64_t) sid->seqnum, &id, qc->nsockets); ngx_quic_connect(c, qsock, path, cid); return NGX_OK; } ngx_quic_socket_t * ngx_quic_alloc_socket(ngx_connection_t *c, ngx_quic_connection_t *qc) { ngx_queue_t *q; ngx_quic_socket_t *sock; if (!ngx_queue_empty(&qc->free_sockets)) { q = ngx_queue_head(&qc->free_sockets); sock = ngx_queue_data(q, ngx_quic_socket_t, queue); ngx_queue_remove(&sock->queue); ngx_memzero(sock, sizeof(ngx_quic_socket_t)); } else { sock = ngx_pcalloc(c->pool, sizeof(ngx_quic_socket_t)); if (sock == NULL) { return NULL; } } return sock; } void ngx_quic_close_socket(ngx_connection_t *c, ngx_quic_socket_t *qsock) { ngx_quic_connection_t *qc; qc = ngx_quic_get_connection(c); ngx_queue_remove(&qsock->queue); ngx_queue_insert_head(&qc->free_sockets, &qsock->queue); ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node); qc->nsockets--; if (qsock->path) { ngx_quic_unref_path(c, qsock->path); } if (qsock->cid) { ngx_quic_unref_client_id(c, qsock->cid); } ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic socket #%L closed nsock:%ui", (int64_t) qsock->sid.seqnum, qc->nsockets); } void ngx_quic_unref_path(ngx_connection_t *c, ngx_quic_path_t *path) { ngx_quic_connection_t *qc; path->refcnt--; if (path->refcnt) { return; } qc = ngx_quic_get_connection(c); ngx_queue_remove(&path->queue); ngx_queue_insert_head(&qc->free_paths, &path->queue); ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic path #%uL addr:%V removed", path->seqnum, &path->addr_text); } ngx_int_t ngx_quic_listen(ngx_connection_t *c, ngx_quic_connection_t *qc, ngx_quic_socket_t *qsock) { ngx_str_t id; ngx_quic_server_id_t *sid; sid = &qsock->sid; sid->len = NGX_QUIC_SERVER_CID_LEN; if (ngx_quic_create_server_id(c, sid->id) != NGX_OK) { return NGX_ERROR; } sid->seqnum = qc->server_seqnum++; id.data = sid->id; id.len = sid->len; ngx_insert_udp_connection(c, &qsock->udp, &id); ngx_queue_insert_tail(&qc->sockets, &qsock->queue); qc->nsockets++; qsock->quic = qc; ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic socket #%uL listening at sid:%xV nsock:%ui", sid->seqnum, &id, qc->nsockets); return NGX_OK; } void ngx_quic_connect(ngx_connection_t *c, ngx_quic_socket_t *sock, ngx_quic_path_t *path, ngx_quic_client_id_t *cid) { sock->path = path; path->refcnt++; sock->cid = cid; cid->refcnt++; ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic socket #%L connected to cid #%uL path:%uL", (int64_t) sock->sid.seqnum, sock->cid->seqnum, path->seqnum); } void ngx_quic_close_sockets(ngx_connection_t *c) { ngx_queue_t *q; ngx_quic_socket_t *qsock; ngx_quic_connection_t *qc; qc = ngx_quic_get_connection(c); while (!ngx_queue_empty(&qc->sockets)) { q = ngx_queue_head(&qc->sockets); qsock = ngx_queue_data(q, ngx_quic_socket_t, queue); ngx_quic_close_socket(c, qsock); } } ngx_quic_socket_t * ngx_quic_find_socket(ngx_connection_t *c, uint64_t seqnum) { ngx_queue_t *q; ngx_quic_socket_t *qsock; ngx_quic_connection_t *qc; qc = ngx_quic_get_connection(c); for (q = ngx_queue_head(&qc->sockets); q != ngx_queue_sentinel(&qc->sockets); q = ngx_queue_next(q)) { qsock = ngx_queue_data(q, ngx_quic_socket_t, queue); if (qsock->sid.seqnum == seqnum) { return qsock; } } return NULL; } ngx_quic_socket_t * ngx_quic_get_unconnected_socket(ngx_connection_t *c) { ngx_queue_t *q; ngx_quic_socket_t *sock; ngx_quic_connection_t *qc; qc = ngx_quic_get_connection(c); for (q = ngx_queue_head(&qc->sockets); q != ngx_queue_sentinel(&qc->sockets); q = ngx_queue_next(q)) { sock = ngx_queue_data(q, ngx_quic_socket_t, queue); if (sock->cid == NULL) { return sock; } } return NULL; }