/src/h2o/lib/core/context.c

Source
/*
 * Copyright (c) 2014 DeNA Co., Ltd.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */
#include <fcntl.h>
#include <stddef.h>
#include <stdlib.h>
#include <sys/time.h>
#include "cloexec.h"
#include "picotls.h"
#include "picotls/openssl.h"
#include "h2o.h"
#include "h2o/http3_server.h"
#include "h2o/memcached.h"
#if H2O_USE_FUSION
#include "picotls/fusion.h"
#endif

h2o_http3client_ctx_t *h2o_create_proxy_http3_context(h2o_context_t *ctx, SSL_CTX *ssl_ctx, int use_gso)
{
#if H2O_USE_LIBUV
    h2o_fatal("no HTTP/3 support for libuv");
#else

    h2o_http3client_ctx_t *h3ctx = h2o_mem_alloc(sizeof(*h3ctx));

    /* tls (TODO inherit session cache setting of ssl_ctx) */
    h3ctx->tls = (ptls_context_t){
        .random_bytes = ptls_openssl_random_bytes,
        .get_time = &ptls_get_time,
        .key_exchanges = ptls_openssl_key_exchanges,
        .cipher_suites = ptls_openssl_cipher_suites,
    };
    h3ctx->verify_cert = (ptls_openssl_verify_certificate_t){};
    if ((SSL_CTX_get_verify_mode(ssl_ctx) & SSL_VERIFY_PEER) != 0) {
        X509_STORE *store;
        if ((store = SSL_CTX_get_cert_store(ssl_ctx)) == NULL)
            h2o_fatal("failed to obtain the store to be used for server certificate verification");
        ptls_openssl_init_verify_certificate(&h3ctx->verify_cert, store);
        h3ctx->tls.verify_certificate = &h3ctx->verify_cert.super;
    }
    quicly_amend_ptls_context(&h3ctx->tls);

    /* quic */
    h3ctx->quic = quicly_spec_context;
    h3ctx->quic.tls = &h3ctx->tls;
    h3ctx->quic.transport_params.max_streams_uni = 10;
    uint8_t cid_key[PTLS_SHA256_DIGEST_SIZE];
    ptls_openssl_random_bytes(cid_key, sizeof(cid_key));
    h3ctx->quic.cid_encryptor = quicly_new_default_cid_encryptor(
#if H2O_USE_FUSION
        ptls_fusion_is_supported_by_cpu() ? &ptls_fusion_quiclb :
#endif
                                          &ptls_openssl_quiclb,
        &ptls_openssl_aes128ecb, &ptls_openssl_sha256, ptls_iovec_init(cid_key, sizeof(cid_key)));
    ptls_clear_memory(cid_key, sizeof(cid_key));
    h3ctx->quic.stream_open = &h2o_httpclient_http3_on_stream_open;

    /* http3 client-specific fields */
    h3ctx->max_frame_payload_size = h2o_http3_calc_min_flow_control_size(H2O_MAX_REQLEN); /* same maximum for HEADERS frame in both
                                                                                           directions */

    /* h2o server http3 integration */
    h2o_socket_t *socks[2], **sp = socks;
    if ((*sp = h2o_quic_create_client_socket(ctx->loop, AF_INET)) != NULL)
        ++sp;
    if ((*sp = h2o_quic_create_client_socket(ctx->loop, AF_INET6)) != NULL)
        ++sp;
    if (sp == socks) {
        char buf[256];
        h2o_fatal("failed to create UDP socket for both IPv4 and v6: %s", h2o_strerror_r(errno, buf, sizeof(buf)));
    }
    h2o_http3_server_init_context(ctx, &h3ctx->h3, ctx->loop, socks[0], socks[1], &h3ctx->quic, &ctx->http3.next_cid, NULL,
                                  h2o_httpclient_http3_notify_connection_update, use_gso);

    h3ctx->load_session = NULL; /* TODO reuse session? */

    return h3ctx;
#endif
}

void h2o_destroy_proxy_http3_context(h2o_http3client_ctx_t *h3ctx)
{
    h2o_quic_dispose_context(&h3ctx->h3);
    quicly_free_default_cid_encryptor(h3ctx->quic.cid_encryptor);
    if (h3ctx->verify_cert.super.cb != NULL)
        ptls_openssl_dispose_verify_certificate(&h3ctx->verify_cert);
    free(h3ctx);
}

void h2o_context_init_pathconf_context(h2o_context_t *ctx, h2o_pathconf_t *pathconf)
{
    /* add pathconf to the inited list (or return if already inited) */
    size_t i;
    for (i = 0; i != ctx->_pathconfs_inited.size; ++i)
        if (ctx->_pathconfs_inited.entries[i] == pathconf)
            return;
    h2o_vector_reserve(NULL, &ctx->_pathconfs_inited, ctx->_pathconfs_inited.size + 1);
    ctx->_pathconfs_inited.entries[ctx->_pathconfs_inited.size++] = pathconf;

#define DOIT(type, list)                                                                                                           \
    do {                                                                                                                           \
        size_t i;                                                                                                                  \
        for (i = 0; i != pathconf->list.size; ++i) {                                                                               \
            type *o = pathconf->list.entries[i];                                                                                   \
            if (o->on_context_init != NULL)                                                                                        \
                o->on_context_init(o, ctx);                                                                                        \
        }                                                                                                                          \
    } while (0)

    DOIT(h2o_handler_t, handlers);
    DOIT(h2o_filter_t, _filters);
    DOIT(h2o_logger_t, _loggers);

#undef DOIT
}

void h2o_context_dispose_pathconf_context(h2o_context_t *ctx, h2o_pathconf_t *pathconf)
{
    /* nullify pathconf in the inited list (or return if already disposed) */
    size_t i;
    for (i = 0; i != ctx->_pathconfs_inited.size; ++i)
        if (ctx->_pathconfs_inited.entries[i] == pathconf)
            break;
    if (i == ctx->_pathconfs_inited.size)
        return;
    ctx->_pathconfs_inited.entries[i] = NULL;

#define DOIT(type, list)                                                                                                           \
    do {                                                                                                                           \
        size_t i;                                                                                                                  \
        for (i = 0; i != pathconf->list.size; ++i) {                                                                               \
            type *o = pathconf->list.entries[i];                                                                                   \
            if (o->on_context_dispose != NULL)                                                                                     \
                o->on_context_dispose(o, ctx);                                                                                     \
        }                                                                                                                          \
    } while (0)

    DOIT(h2o_handler_t, handlers);
    DOIT(h2o_filter_t, _filters);
    DOIT(h2o_logger_t, _loggers);

#undef DOIT
}

void h2o_context_init(h2o_context_t *ctx, h2o_loop_t *loop, h2o_globalconf_t *config)
{
    size_t i, j;

    assert(config->hosts[0] != NULL);

    memset(ctx, 0, sizeof(*ctx));
    ctx->loop = loop;
    ctx->globalconf = config;
    ctx->queue = h2o_multithread_create_queue(loop);
    h2o_multithread_register_receiver(ctx->queue, &ctx->receivers.hostinfo_getaddr, h2o_hostinfo_getaddr_receiver);
    ctx->filecache = h2o_filecache_create(config->filecache.capacity);
    ctx->spare_pipes.pipes = h2o_mem_alloc(sizeof(ctx->spare_pipes.pipes[0]) * config->max_spare_pipes);

    h2o_linklist_init_anchor(&ctx->_conns.active);
    h2o_linklist_init_anchor(&ctx->_conns.idle);
    h2o_linklist_init_anchor(&ctx->_conns.shutdown);
    ctx->proxy.client_ctx.loop = loop;
    ctx->proxy.client_ctx.io_timeout = ctx->globalconf->proxy.io_timeout;
    ctx->proxy.client_ctx.connect_timeout = ctx->globalconf->proxy.connect_timeout;
    ctx->proxy.client_ctx.first_byte_timeout = ctx->globalconf->proxy.first_byte_timeout;
    ctx->proxy.client_ctx.keepalive_timeout = ctx->globalconf->proxy.keepalive_timeout;
    ctx->proxy.client_ctx.getaddr_receiver = &ctx->receivers.hostinfo_getaddr;
    ctx->proxy.client_ctx.http2.latency_optimization = ctx->globalconf->http2.latency_optimization;
    ctx->proxy.client_ctx.max_buffer_size = ctx->globalconf->proxy.max_buffer_size;
    ctx->proxy.client_ctx.http2.max_concurrent_streams = ctx->globalconf->proxy.http2.max_concurrent_streams;
    ctx->proxy.client_ctx.protocol_selector.ratio.http2 = ctx->globalconf->proxy.protocol_ratio.http2;
    ctx->proxy.client_ctx.protocol_selector.ratio.http3 = ctx->globalconf->proxy.protocol_ratio.http3;
    if (ctx->globalconf->proxy.protocol_ratio.http3 != 0)
        ctx->proxy.client_ctx.http3 = h2o_create_proxy_http3_context(
            ctx, ctx->globalconf->proxy.global_socketpool._ssl_ctx, ctx->globalconf->http3.use_gso);
    ctx->proxy.connpool.socketpool = &ctx->globalconf->proxy.global_socketpool;
    h2o_linklist_init_anchor(&ctx->proxy.connpool.http2.conns);

    ctx->_module_configs = h2o_mem_alloc(sizeof(*ctx->_module_configs) * config->_num_config_slots);
    memset(ctx->_module_configs, 0, sizeof(*ctx->_module_configs) * config->_num_config_slots);

    static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
    pthread_mutex_lock(&mutex);

    h2o_socketpool_register_loop(&ctx->globalconf->proxy.global_socketpool, loop);

    for (i = 0; config->hosts[i] != NULL; ++i) {
        h2o_hostconf_t *hostconf = config->hosts[i];
        for (j = 0; j != hostconf->paths.size; ++j) {
            h2o_pathconf_t *pathconf = hostconf->paths.entries[j];
            h2o_context_init_pathconf_context(ctx, pathconf);
        }
        h2o_context_init_pathconf_context(ctx, &hostconf->fallback_path);
    }

    pthread_mutex_unlock(&mutex);
}

void h2o_context_dispose(h2o_context_t *ctx)
{
    h2o_globalconf_t *config = ctx->globalconf;

    h2o_socketpool_unregister_loop(&ctx->globalconf->proxy.global_socketpool, ctx->loop);

    for (size_t i = 0; config->hosts[i] != NULL; ++i) {
        h2o_hostconf_t *hostconf = config->hosts[i];
        for (size_t j = 0; j != hostconf->paths.size; ++j) {
            h2o_pathconf_t *pathconf = hostconf->paths.entries[j];
            h2o_context_dispose_pathconf_context(ctx, pathconf);
        }
        h2o_context_dispose_pathconf_context(ctx, &hostconf->fallback_path);
    }
    free(ctx->_pathconfs_inited.entries);
    if (ctx->proxy.client_ctx.http3 != NULL)
        h2o_destroy_proxy_http3_context(ctx->proxy.client_ctx.http3);
    free(ctx->_module_configs);
    /* what should we do here? assert(!h2o_linklist_is_empty(&ctx->http2._conns); */

    for (size_t i = 0; i < ctx->spare_pipes.count; ++i) {
        close(ctx->spare_pipes.pipes[i][0]);
        close(ctx->spare_pipes.pipes[i][1]);
    }
    free(ctx->spare_pipes.pipes);

    h2o_filecache_destroy(ctx->filecache);
    ctx->filecache = NULL;

    /* clear storage */
    for (size_t i = 0; i != ctx->storage.size; ++i) {
        h2o_context_storage_item_t *item = ctx->storage.entries + i;
        if (item->dispose != NULL) {
            item->dispose(item->data);
        }
    }
    free(ctx->storage.entries);

    /* TODO assert that the all the getaddrinfo threads are idle */
    h2o_multithread_unregister_receiver(ctx->queue, &ctx->receivers.hostinfo_getaddr);
    h2o_multithread_destroy_queue(ctx->queue);

    if (ctx->_timestamp_cache.value != NULL)
        h2o_mem_release_shared(ctx->_timestamp_cache.value);
}

void h2o_context_request_shutdown(h2o_context_t *ctx)
{
    ctx->shutdown_requested = 1;

    H2O_CONN_LIST_FOREACH(h2o_conn_t * conn, ({&ctx->_conns.active, &ctx->_conns.idle}), {
        if (conn->callbacks->request_shutdown != NULL) {
            conn->callbacks->request_shutdown(conn);
        }
    });
}

void h2o_context_update_timestamp_string_cache(h2o_context_t *ctx)
{
    struct tm gmt;
    if (ctx->_timestamp_cache.value != NULL)
        h2o_mem_release_shared(ctx->_timestamp_cache.value);
    ctx->_timestamp_cache.value = h2o_mem_alloc_shared(NULL, sizeof(h2o_timestamp_string_t), NULL);
    gmtime_r(&ctx->_timestamp_cache.tv_at.tv_sec, &gmt);
    h2o_time2str_rfc1123(ctx->_timestamp_cache.value->rfc1123, &gmt);
    h2o_time2str_log(ctx->_timestamp_cache.value->log, ctx->_timestamp_cache.tv_at.tv_sec);
}

void h2o_context_close_idle_connections(h2o_context_t *ctx, size_t max_connections_to_close, uint64_t min_age)
{
    if (max_connections_to_close <= 0)
        return;

    size_t closed = ctx->_conns.num_conns.shutdown;

    if (closed >= max_connections_to_close)
        return;

    H2O_CONN_LIST_FOREACH(h2o_conn_t * conn, ({&ctx->_conns.idle}), {
        struct timeval now = h2o_gettimeofday(ctx->loop);
        if (h2o_timeval_subtract(&conn->connected_at, &now) < (min_age * 1000))
            continue;
        ctx->connection_stats.idle_closed++;
        conn->callbacks->close_idle_connection(conn);
        closed++;
        if (closed == max_connections_to_close)
            return;
    });
}

static size_t *get_connection_state_counter(h2o_context_t *ctx, h2o_conn_state_t state)
{
    return ctx->_conns.num_conns.counters + (size_t)state;
}

static void unlink_conn(h2o_conn_t *conn)
{
    --*get_connection_state_counter(conn->ctx, conn->state);
    h2o_linklist_unlink(&conn->_conns);
}

static void link_conn(h2o_conn_t *conn)
{
    switch (conn->state) {
    case H2O_CONN_STATE_IDLE:
        h2o_linklist_insert(&conn->ctx->_conns.idle, &conn->_conns);
        break;
    case H2O_CONN_STATE_ACTIVE:
        h2o_linklist_insert(&conn->ctx->_conns.active, &conn->_conns);
        break;
    case H2O_CONN_STATE_SHUTDOWN:
        h2o_linklist_insert(&conn->ctx->_conns.shutdown, &conn->_conns);
        break;
    }
    ++*get_connection_state_counter(conn->ctx, conn->state);
}

h2o_conn_t *h2o_create_connection(size_t sz, h2o_context_t *ctx, h2o_hostconf_t **hosts, struct timeval connected_at,
                                  const h2o_conn_callbacks_t *callbacks)
{
    h2o_conn_t *conn = (h2o_conn_t *)h2o_mem_alloc(sz);

    conn->ctx = ctx;
    conn->hosts = hosts;
    conn->connected_at = connected_at;
#ifdef H2O_NO_64BIT_ATOMICS
    pthread_mutex_lock(&h2o_conn_id_mutex);
    conn->id = ++h2o_connection_id;
    pthread_mutex_unlock(&h2o_conn_id_mutex);
#else
    conn->id = __sync_add_and_fetch(&h2o_connection_id, 1);
#endif
    conn->callbacks = callbacks;
    conn->_uuid.is_initialized = 0;

    conn->state = H2O_CONN_STATE_ACTIVE;
    conn->_conns = (h2o_linklist_t){};
    link_conn(conn);

    return conn;
}

void h2o_destroy_connection(h2o_conn_t *conn)
{
    unlink_conn(conn);
    free(conn);
}

void h2o_conn_set_state(h2o_conn_t *conn, h2o_conn_state_t state)
{
    if (conn->state != state) {
        unlink_conn(conn);
        conn->state = state;
        link_conn(conn);
    }
}

Coverage Report

Created: 2026-04-12 06:38

Line	Count	Source
1		/*
2		* Copyright (c) 2014 DeNA Co., Ltd.
3		*
4		* Permission is hereby granted, free of charge, to any person obtaining a copy
5		* of this software and associated documentation files (the "Software"), to
6		* deal in the Software without restriction, including without limitation the
7		* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
8		* sell copies of the Software, and to permit persons to whom the Software is
9		* furnished to do so, subject to the following conditions:
10		*
11		* The above copyright notice and this permission notice shall be included in
12		* all copies or substantial portions of the Software.
13		*
14		* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15		* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16		* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17		* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18		* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19		* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
20		* IN THE SOFTWARE.
21		*/
22		#include <fcntl.h>
23		#include <stddef.h>
24		#include <stdlib.h>
25		#include <sys/time.h>
26		#include "cloexec.h"
27		#include "picotls.h"
28		#include "picotls/openssl.h"
29		#include "h2o.h"
30		#include "h2o/http3_server.h"
31		#include "h2o/memcached.h"
32		#if H2O_USE_FUSION
33		#include "picotls/fusion.h"
34		#endif
35
36		h2o_http3client_ctx_t h2o_create_proxy_http3_context(h2o_context_t ctx, SSL_CTX *ssl_ctx, int use_gso)
37	0	{
38		#if H2O_USE_LIBUV
39		h2o_fatal("no HTTP/3 support for libuv");
40		#else
41
42	0	h2o_http3client_ctx_t h3ctx = h2o_mem_alloc(sizeof(h3ctx));
43
44		/* tls (TODO inherit session cache setting of ssl_ctx) */
45	0	h3ctx->tls = (ptls_context_t){
46	0	.random_bytes = ptls_openssl_random_bytes,
47	0	.get_time = &ptls_get_time,
48	0	.key_exchanges = ptls_openssl_key_exchanges,
49	0	.cipher_suites = ptls_openssl_cipher_suites,
50	0	};
51	0	h3ctx->verify_cert = (ptls_openssl_verify_certificate_t){};
52	0	if ((SSL_CTX_get_verify_mode(ssl_ctx) & SSL_VERIFY_PEER) != 0) {
53	0	X509_STORE *store;
54	0	if ((store = SSL_CTX_get_cert_store(ssl_ctx)) == NULL)
55	0	h2o_fatal("failed to obtain the store to be used for server certificate verification");
56	0	ptls_openssl_init_verify_certificate(&h3ctx->verify_cert, store);
57	0	h3ctx->tls.verify_certificate = &h3ctx->verify_cert.super;
58	0	}
59	0	quicly_amend_ptls_context(&h3ctx->tls);
60
61		/* quic */
62	0	h3ctx->quic = quicly_spec_context;
63	0	h3ctx->quic.tls = &h3ctx->tls;
64	0	h3ctx->quic.transport_params.max_streams_uni = 10;
65	0	uint8_t cid_key[PTLS_SHA256_DIGEST_SIZE];
66	0	ptls_openssl_random_bytes(cid_key, sizeof(cid_key));
67	0	h3ctx->quic.cid_encryptor = quicly_new_default_cid_encryptor(
68		#if H2O_USE_FUSION
69		ptls_fusion_is_supported_by_cpu() ? &ptls_fusion_quiclb :
70		#endif
71	0	&ptls_openssl_quiclb,
72	0	&ptls_openssl_aes128ecb, &ptls_openssl_sha256, ptls_iovec_init(cid_key, sizeof(cid_key)));
73	0	ptls_clear_memory(cid_key, sizeof(cid_key));
74	0	h3ctx->quic.stream_open = &h2o_httpclient_http3_on_stream_open;
75
76		/* http3 client-specific fields */
77	0	h3ctx->max_frame_payload_size = h2o_http3_calc_min_flow_control_size(H2O_MAX_REQLEN); /* same maximum for HEADERS frame in both
78		directions */
79
80		/* h2o server http3 integration */
81	0	h2o_socket_t socks[2], *sp = socks;
82	0	if ((*sp = h2o_quic_create_client_socket(ctx->loop, AF_INET)) != NULL)
83	0	++sp;
84	0	if ((*sp = h2o_quic_create_client_socket(ctx->loop, AF_INET6)) != NULL)
85	0	++sp;
86	0	if (sp == socks) {
87	0	char buf[256];
88	0	h2o_fatal("failed to create UDP socket for both IPv4 and v6: %s", h2o_strerror_r(errno, buf, sizeof(buf)));
89	0	}
90	0	h2o_http3_server_init_context(ctx, &h3ctx->h3, ctx->loop, socks[0], socks[1], &h3ctx->quic, &ctx->http3.next_cid, NULL,
91	0	h2o_httpclient_http3_notify_connection_update, use_gso);
92
93	0	h3ctx->load_session = NULL; /* TODO reuse session? */
94
95	0	return h3ctx;
96	0	#endif
97	0	}
98
99		void h2o_destroy_proxy_http3_context(h2o_http3client_ctx_t *h3ctx)
100	0	{
101	0	h2o_quic_dispose_context(&h3ctx->h3);
102	0	quicly_free_default_cid_encryptor(h3ctx->quic.cid_encryptor);
103	0	if (h3ctx->verify_cert.super.cb != NULL)
104	0	ptls_openssl_dispose_verify_certificate(&h3ctx->verify_cert);
105	0	free(h3ctx);
106	0	}
107
108		void h2o_context_init_pathconf_context(h2o_context_t ctx, h2o_pathconf_t pathconf)
109	11	{
110		/* add pathconf to the inited list (or return if already inited) */
111	11	size_t i;
112	26	for (i = 0; i != ctx->_pathconfs_inited.size; ++i)
113	15	if (ctx->_pathconfs_inited.entries[i] == pathconf)
114	0	return;
115	11	h2o_vector_reserve(NULL, &ctx->_pathconfs_inited, ctx->_pathconfs_inited.size + 1);
116	11	ctx->_pathconfs_inited.entries[ctx->_pathconfs_inited.size++] = pathconf;
117
118	11	#define DOIT(type, list) \
119	33	do { \
120	33	size_t i; \
121	41	for (i = 0; i != pathconf->list.size; ++i) { \
122	8	type *o = pathconf->list.entries[i]; \
123	8	if (o->on_context_init != NULL) \
124	8	o->on_context_init(o, ctx); \
125	8	} \
126	33	} while (0)
127
128	11	DOIT(h2o_handler_t, handlers);
129	11	DOIT(h2o_filter_t, _filters);
130	11	DOIT(h2o_logger_t, _loggers);
131
132	11	#undef DOIT
133	11	}
134
135		void h2o_context_dispose_pathconf_context(h2o_context_t ctx, h2o_pathconf_t pathconf)
136	0	{
137		/* nullify pathconf in the inited list (or return if already disposed) */
138	0	size_t i;
139	0	for (i = 0; i != ctx->_pathconfs_inited.size; ++i)
140	0	if (ctx->_pathconfs_inited.entries[i] == pathconf)
141	0	break;
142	0	if (i == ctx->_pathconfs_inited.size)
143	0	return;
144	0	ctx->_pathconfs_inited.entries[i] = NULL;
145
146	0	#define DOIT(type, list) \
147	0	do { \
148	0	size_t i; \
149	0	for (i = 0; i != pathconf->list.size; ++i) { \
150	0	type *o = pathconf->list.entries[i]; \
151	0	if (o->on_context_dispose != NULL) \
152	0	o->on_context_dispose(o, ctx); \
153	0	} \
154	0	} while (0)
155
156	0	DOIT(h2o_handler_t, handlers);
157	0	DOIT(h2o_filter_t, _filters);
158	0	DOIT(h2o_logger_t, _loggers);
159
160	0	#undef DOIT
161	0	}
162
163		void h2o_context_init(h2o_context_t ctx, h2o_loop_t loop, h2o_globalconf_t *config)
164	3	{
165	3	size_t i, j;
166
167	3	assert(config->hosts[0] != NULL);
168
169	3	memset(ctx, 0, sizeof(*ctx));
170	3	ctx->loop = loop;
171	3	ctx->globalconf = config;
172	3	ctx->queue = h2o_multithread_create_queue(loop);
173	3	h2o_multithread_register_receiver(ctx->queue, &ctx->receivers.hostinfo_getaddr, h2o_hostinfo_getaddr_receiver);
174	3	ctx->filecache = h2o_filecache_create(config->filecache.capacity);
175	3	ctx->spare_pipes.pipes = h2o_mem_alloc(sizeof(ctx->spare_pipes.pipes[0]) * config->max_spare_pipes);
176
177	3	h2o_linklist_init_anchor(&ctx->_conns.active);
178	3	h2o_linklist_init_anchor(&ctx->_conns.idle);
179	3	h2o_linklist_init_anchor(&ctx->_conns.shutdown);
180	3	ctx->proxy.client_ctx.loop = loop;
181	3	ctx->proxy.client_ctx.io_timeout = ctx->globalconf->proxy.io_timeout;
182	3	ctx->proxy.client_ctx.connect_timeout = ctx->globalconf->proxy.connect_timeout;
183	3	ctx->proxy.client_ctx.first_byte_timeout = ctx->globalconf->proxy.first_byte_timeout;
184	3	ctx->proxy.client_ctx.keepalive_timeout = ctx->globalconf->proxy.keepalive_timeout;
185	3	ctx->proxy.client_ctx.getaddr_receiver = &ctx->receivers.hostinfo_getaddr;
186	3	ctx->proxy.client_ctx.http2.latency_optimization = ctx->globalconf->http2.latency_optimization;
187	3	ctx->proxy.client_ctx.max_buffer_size = ctx->globalconf->proxy.max_buffer_size;
188	3	ctx->proxy.client_ctx.http2.max_concurrent_streams = ctx->globalconf->proxy.http2.max_concurrent_streams;
189	3	ctx->proxy.client_ctx.protocol_selector.ratio.http2 = ctx->globalconf->proxy.protocol_ratio.http2;
190	3	ctx->proxy.client_ctx.protocol_selector.ratio.http3 = ctx->globalconf->proxy.protocol_ratio.http3;
191	3	if (ctx->globalconf->proxy.protocol_ratio.http3 != 0)
192	0	ctx->proxy.client_ctx.http3 = h2o_create_proxy_http3_context(
193	0	ctx, ctx->globalconf->proxy.global_socketpool._ssl_ctx, ctx->globalconf->http3.use_gso);
194	3	ctx->proxy.connpool.socketpool = &ctx->globalconf->proxy.global_socketpool;
195	3	h2o_linklist_init_anchor(&ctx->proxy.connpool.http2.conns);
196
197	3	ctx->_module_configs = h2o_mem_alloc(sizeof(ctx->_module_configs) config->_num_config_slots);
198	3	memset(ctx->_module_configs, 0, sizeof(ctx->_module_configs) config->_num_config_slots);
199
200	3	static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
201	3	pthread_mutex_lock(&mutex);
202
203	3	h2o_socketpool_register_loop(&ctx->globalconf->proxy.global_socketpool, loop);
204
205	6	for (i = 0; config->hosts[i] != NULL; ++i) {
206	3	h2o_hostconf_t *hostconf = config->hosts[i];
207	11	for (j = 0; j != hostconf->paths.size; ++j) {
208	8	h2o_pathconf_t *pathconf = hostconf->paths.entries[j];
209	8	h2o_context_init_pathconf_context(ctx, pathconf);
210	8	}
211	3	h2o_context_init_pathconf_context(ctx, &hostconf->fallback_path);
212	3	}
213
214	3	pthread_mutex_unlock(&mutex);
215	3	}
216
217		void h2o_context_dispose(h2o_context_t *ctx)
218	0	{
219	0	h2o_globalconf_t *config = ctx->globalconf;
220
221	0	h2o_socketpool_unregister_loop(&ctx->globalconf->proxy.global_socketpool, ctx->loop);
222
223	0	for (size_t i = 0; config->hosts[i] != NULL; ++i) {
224	0	h2o_hostconf_t *hostconf = config->hosts[i];
225	0	for (size_t j = 0; j != hostconf->paths.size; ++j) {
226	0	h2o_pathconf_t *pathconf = hostconf->paths.entries[j];
227	0	h2o_context_dispose_pathconf_context(ctx, pathconf);
228	0	}
229	0	h2o_context_dispose_pathconf_context(ctx, &hostconf->fallback_path);
230	0	}
231	0	free(ctx->_pathconfs_inited.entries);
232	0	if (ctx->proxy.client_ctx.http3 != NULL)
233	0	h2o_destroy_proxy_http3_context(ctx->proxy.client_ctx.http3);
234	0	free(ctx->_module_configs);
235		/* what should we do here? assert(!h2o_linklist_is_empty(&ctx->http2._conns); */
236
237	0	for (size_t i = 0; i < ctx->spare_pipes.count; ++i) {
238	0	close(ctx->spare_pipes.pipes[i][0]);
239	0	close(ctx->spare_pipes.pipes[i][1]);
240	0	}
241	0	free(ctx->spare_pipes.pipes);
242
243	0	h2o_filecache_destroy(ctx->filecache);
244	0	ctx->filecache = NULL;
245
246		/* clear storage */
247	0	for (size_t i = 0; i != ctx->storage.size; ++i) {
248	0	h2o_context_storage_item_t *item = ctx->storage.entries + i;
249	0	if (item->dispose != NULL) {
250	0	item->dispose(item->data);
251	0	}
252	0	}
253	0	free(ctx->storage.entries);
254
255		/* TODO assert that the all the getaddrinfo threads are idle */
256	0	h2o_multithread_unregister_receiver(ctx->queue, &ctx->receivers.hostinfo_getaddr);
257	0	h2o_multithread_destroy_queue(ctx->queue);
258
259	0	if (ctx->_timestamp_cache.value != NULL)
260	0	h2o_mem_release_shared(ctx->_timestamp_cache.value);
261	0	}
262
263		void h2o_context_request_shutdown(h2o_context_t *ctx)
264	0	{
265	0	ctx->shutdown_requested = 1;
266
267	0	H2O_CONN_LIST_FOREACH(h2o_conn_t * conn, ({&ctx->_conns.active, &ctx->_conns.idle}), {
268	0	if (conn->callbacks->request_shutdown != NULL) {
269	0	conn->callbacks->request_shutdown(conn);
270	0	}
271	0	});
272	0	}
273
274		void h2o_context_update_timestamp_string_cache(h2o_context_t *ctx)
275	250	{
276	250	struct tm gmt;
277	250	if (ctx->_timestamp_cache.value != NULL)
278	247	h2o_mem_release_shared(ctx->_timestamp_cache.value);
279	250	ctx->_timestamp_cache.value = h2o_mem_alloc_shared(NULL, sizeof(h2o_timestamp_string_t), NULL);
280	250	gmtime_r(&ctx->_timestamp_cache.tv_at.tv_sec, &gmt);
281	250	h2o_time2str_rfc1123(ctx->_timestamp_cache.value->rfc1123, &gmt);
282	250	h2o_time2str_log(ctx->_timestamp_cache.value->log, ctx->_timestamp_cache.tv_at.tv_sec);
283	250	}
284
285		void h2o_context_close_idle_connections(h2o_context_t *ctx, size_t max_connections_to_close, uint64_t min_age)
286	0	{
287	0	if (max_connections_to_close <= 0)
288	0	return;
289
290	0	size_t closed = ctx->_conns.num_conns.shutdown;
291
292	0	if (closed >= max_connections_to_close)
293	0	return;
294
295	0	H2O_CONN_LIST_FOREACH(h2o_conn_t * conn, ({&ctx->_conns.idle}), {
296	0	struct timeval now = h2o_gettimeofday(ctx->loop);
297	0	if (h2o_timeval_subtract(&conn->connected_at, &now) < (min_age * 1000))
298	0	continue;
299	0	ctx->connection_stats.idle_closed++;
300	0	conn->callbacks->close_idle_connection(conn);
301	0	closed++;
302	0	if (closed == max_connections_to_close)
303	0	return;
304	0	});
305	0	}
306
307		static size_t get_connection_state_counter(h2o_context_t ctx, h2o_conn_state_t state)
308	101k	{
309	101k	return ctx->_conns.num_conns.counters + (size_t)state;
310	101k	}
311
312		static void unlink_conn(h2o_conn_t *conn)
313	50.8k	{
314	50.8k	--*get_connection_state_counter(conn->ctx, conn->state);
315	50.8k	h2o_linklist_unlink(&conn->_conns);
316	50.8k	}
317
318		static void link_conn(h2o_conn_t *conn)
319	50.8k	{
320	50.8k	switch (conn->state) {
321	19.5k	case H2O_CONN_STATE_IDLE:
322	19.5k	h2o_linklist_insert(&conn->ctx->_conns.idle, &conn->_conns);
323	19.5k	break;
324	31.2k	case H2O_CONN_STATE_ACTIVE:
325	31.2k	h2o_linklist_insert(&conn->ctx->_conns.active, &conn->_conns);
326	31.2k	break;
327	0	case H2O_CONN_STATE_SHUTDOWN:
328	0	h2o_linklist_insert(&conn->ctx->_conns.shutdown, &conn->_conns);
329	0	break;
330	50.8k	}
331	50.8k	++*get_connection_state_counter(conn->ctx, conn->state);
332	50.8k	}
333
334		h2o_conn_t h2o_create_connection(size_t sz, h2o_context_t ctx, h2o_hostconf_t **hosts, struct timeval connected_at,
335		const h2o_conn_callbacks_t *callbacks)
336	28.7k	{
337	28.7k	h2o_conn_t conn = (h2o_conn_t )h2o_mem_alloc(sz);
338
339	28.7k	conn->ctx = ctx;
340	28.7k	conn->hosts = hosts;
341	28.7k	conn->connected_at = connected_at;
342		#ifdef H2O_NO_64BIT_ATOMICS
343		pthread_mutex_lock(&h2o_conn_id_mutex);
344		conn->id = ++h2o_connection_id;
345		pthread_mutex_unlock(&h2o_conn_id_mutex);
346		#else
347	28.7k	conn->id = __sync_add_and_fetch(&h2o_connection_id, 1);
348	28.7k	#endif
349	28.7k	conn->callbacks = callbacks;
350	28.7k	conn->_uuid.is_initialized = 0;
351
352	28.7k	conn->state = H2O_CONN_STATE_ACTIVE;
353	28.7k	conn->_conns = (h2o_linklist_t){};
354	28.7k	link_conn(conn);
355
356	28.7k	return conn;
357	28.7k	}
358
359		void h2o_destroy_connection(h2o_conn_t *conn)
360	28.7k	{
361	28.7k	unlink_conn(conn);
362	28.7k	free(conn);
363	28.7k	}
364
365		void h2o_conn_set_state(h2o_conn_t *conn, h2o_conn_state_t state)
366	148k	{
367	148k	if (conn->state != state) {
368	22.0k	unlink_conn(conn);
369	22.0k	conn->state = state;
370	22.0k	link_conn(conn);
371	22.0k	}
372	148k	}