Mercurial > hg > nginx
view src/event/quic/ngx_event_quic_socket.c @ 8962:47f45a98f892 quic
QUIC: fixed handling STREAM FIN.
Previously, when a STREAM FIN frame with no data bytes was received after all
prior stream data were already read by the application layer, the frame was
ignored and eof was not reported to the application.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 11 Jan 2022 18:57:02 +0300 |
parents | 32daba3aabb2 |
children | 1e2f4e9c8195 |
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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> 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, *tmp; 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 (id auto-generated) */ qsock = ngx_quic_create_socket(c, qc); if (qsock == NULL) { return NGX_ERROR; } /* socket is listening at new server id */ 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->limited = 0; } /* now bind socket to client and path */ ngx_quic_connect(c, qsock, path, cid); tmp = ngx_pcalloc(c->pool, sizeof(ngx_quic_socket_t)); if (tmp == NULL) { goto failed; } tmp->sid.seqnum = NGX_QUIC_UNSET_PN; /* temporary socket */ ngx_memcpy(tmp->sid.id, pkt->odcid.data, pkt->odcid.len); tmp->sid.len = pkt->odcid.len; if (ngx_quic_listen(c, qc, tmp) != NGX_OK) { goto failed; } ngx_quic_connect(c, tmp, path, cid); /* 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; } ngx_quic_socket_t * ngx_quic_create_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; } } sock->sid.len = NGX_QUIC_SERVER_CID_LEN; if (ngx_quic_create_server_id(c, sock->sid.id) != NGX_OK) { return NULL; } sock->sid.seqnum = qc->server_seqnum++; 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; 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 #%L listening at sid:%xV nsock:%ui", (int64_t) 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; }