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#include <lighttpd/base.h>
#include <lighttpd/plugin_core.h>
static void li_connection_reset_keep_alive(liConnection *con);
static G_GNUC_WARN_UNUSED_RESULT gboolean li_connection_internal_error(liConnection *con);
static void update_io_events(liConnection *con) {
int events = 0;
if (LI_CON_STATE_KEEP_ALIVE == con->state) {
events = EV_READ;
} else {
if (!con->can_read && (con->state != LI_CON_STATE_HANDLE_MAINVR || con->mainvr->state >= LI_VRS_READ_CONTENT) && !con->in->is_closed) {
events = events | EV_READ;
}
if (!con->can_write && con->raw_out->length > 0) {
if (!con->mainvr->throttled || con->mainvr->throttle.magazine > 0) {
events = events | EV_WRITE;
}
}
}
if (con->srv_sock->update_events_cb) {
con->srv_sock->update_events_cb(con, events);
} else {
li_ev_io_set_events(con->wrk->loop, &con->sock_watcher, events);
}
}
static void parse_request_body(liConnection *con) {
if ((con->state > LI_CON_STATE_HANDLE_MAINVR || con->mainvr->state >= LI_VRS_READ_CONTENT) && !con->in->is_closed) {
goffset newbytes = 0;
if (con->mainvr->request.content_length == -1) {
/* TODO: parse chunked encoded request body, filters */
/* li_chunkqueue_steal_all(con->in, con->raw_in); */
con->in->is_closed = TRUE;
} else {
if (con->in->bytes_in < con->mainvr->request.content_length) {
newbytes = li_chunkqueue_steal_len(con->in, con->raw_in, con->mainvr->request.content_length - con->in->bytes_in);
}
if (con->in->bytes_in == con->mainvr->request.content_length) {
con->in->is_closed = TRUE;
}
}
if (newbytes > 0 || con->in->is_closed) {
li_vrequest_handle_request_body(con->mainvr);
}
}
}
static G_GNUC_WARN_UNUSED_RESULT gboolean forward_response_body(liConnection *con) {
liVRequest *vr = con->mainvr;
if (con->state >= LI_CON_STATE_HANDLE_MAINVR) {
if (!con->response_headers_sent) {
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "write response headers");
}
con->response_headers_sent = TRUE;
if (!li_response_send_headers(con)) {
con->response_headers_sent = FALSE;
return li_connection_internal_error(con);
}
li_vrequest_joblist_append(vr);
}
if (con->raw_out->is_closed) {
li_chunkqueue_skip_all(con->out);
con->out->is_closed = TRUE;
} else {
if (vr->response.transfer_encoding & LI_HTTP_TRANSFER_ENCODING_CHUNKED) {
li_filter_chunked_encode(vr, con->raw_out, con->out);
} else {
li_chunkqueue_steal_all(con->raw_out, con->out);
}
if (con->out->is_closed) con->raw_out->is_closed = TRUE;
con->info.out_queue_length = con->raw_out->length;
}
}
return TRUE;
}
/* don't use con afterwards */
static void connection_request_done(liConnection *con) {
liVRequest *vr = con->mainvr;
liServerState s;
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(con->mainvr, "response end (keep_alive = %i)", con->info.keep_alive);
}
li_plugins_handle_close(con);
s = g_atomic_int_get(&con->srv->dest_state);
if (con->info.keep_alive && (LI_SERVER_RUNNING == s || LI_SERVER_WARMUP == s)) {
li_connection_reset_keep_alive(con);
} else {
li_worker_con_put(con);
}
}
/* return FALSE if you shouldn't use con afterwards */
static gboolean check_response_done(liConnection *con) {
if (con->in->is_closed && con->raw_out->is_closed && 0 == con->raw_out->length) {
connection_request_done(con);
return FALSE;
}
return TRUE;
}
static void connection_close(liConnection *con) {
liVRequest *vr = con->mainvr;
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "connection closed");
}
li_plugins_handle_close(con);
li_worker_con_put(con);
}
void li_connection_error(liConnection *con) {
liVRequest *vr = con->mainvr;
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "connection closed (error)");
}
li_plugins_handle_close(con);
li_worker_con_put(con);
}
static G_GNUC_WARN_UNUSED_RESULT gboolean li_connection_internal_error(liConnection *con) {
liVRequest *vr = con->mainvr;
if (con->response_headers_sent) {
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "Couldn't send '500 Internal Error': headers already sent");
}
li_connection_error(con);
return FALSE;
} else {
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "internal error");
}
/* We only need the http version from the http request, "keep-alive" reset doesn't reset it */
li_vrequest_reset(con->mainvr, TRUE);
con->info.keep_alive = FALSE;
con->mainvr->response.http_status = 500;
con->state = LI_CON_STATE_WRITE; /* skips further vrequest handling */
li_chunkqueue_reset(con->out);
con->out->is_closed = TRUE;
con->in->is_closed = TRUE;
return forward_response_body(con);
}
}
static G_GNUC_WARN_UNUSED_RESULT gboolean connection_handle_read(liConnection *con) {
liVRequest *vr = con->mainvr;
if (con->raw_in->length == 0) return TRUE;
if (con->state == LI_CON_STATE_KEEP_ALIVE) {
/* stop keep alive timeout watchers */
if (con->keep_alive_data.link) {
g_queue_delete_link(&con->wrk->keep_alive_queue, con->keep_alive_data.link);
con->keep_alive_data.link = NULL;
}
con->keep_alive_data.timeout = 0;
ev_timer_stop(con->wrk->loop, &con->keep_alive_data.watcher);
/* put back in io timeout queue */
if (!con->io_timeout_elem.queued)
li_waitqueue_push(&con->wrk->io_timeout_queue, &con->io_timeout_elem);
con->keep_alive_requests++;
/* disable keep alive if limit is reached */
if (con->keep_alive_requests == CORE_OPTION(LI_CORE_OPTION_MAX_KEEP_ALIVE_REQUESTS).number)
con->info.keep_alive = FALSE;
con->state = LI_CON_STATE_READ_REQUEST_HEADER;
li_vrequest_start(con->mainvr);
} else {
if (con->state == LI_CON_STATE_REQUEST_START)
con->state = LI_CON_STATE_READ_REQUEST_HEADER;
}
if (con->state == LI_CON_STATE_READ_REQUEST_HEADER && con->mainvr->state == LI_VRS_CLEAN) {
liHandlerResult res;
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "reading request header");
}
res = li_http_request_parse(con->mainvr, &con->req_parser_ctx);
/* max uri length 8 kilobytes */
if (vr->request.uri.raw->len > 8*1024) {
VR_INFO(vr,
"request uri too large. limit: 8kb, received: %s",
li_counter_format(vr->request.uri.raw->len, COUNTER_BYTES, vr->wrk->tmp_str)->str
);
con->info.keep_alive = FALSE;
con->mainvr->response.http_status = 414; /* Request-URI Too Large */
li_vrequest_handle_direct(con->mainvr);
con->state = LI_CON_STATE_WRITE;
con->in->is_closed = TRUE;
if (!forward_response_body(con)) return FALSE;
return TRUE;
}
switch(res) {
case LI_HANDLER_GO_ON:
break; /* go on */
case LI_HANDLER_WAIT_FOR_EVENT:
return TRUE;
case LI_HANDLER_ERROR:
case LI_HANDLER_COMEBACK: /* unexpected */
/* unparsable header */
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "parsing header failed");
}
con->wrk->stats.requests++;
con->info.keep_alive = FALSE;
/* set status 400 if not already set to e.g. 413 */
if (con->mainvr->response.http_status == 0)
con->mainvr->response.http_status = 400;
li_vrequest_handle_direct(con->mainvr);
con->state = LI_CON_STATE_WRITE;
con->in->is_closed = TRUE;
if (!forward_response_body(con)) return FALSE;
return TRUE;
}
con->wrk->stats.requests++;
/* headers ready */
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "validating request header");
}
if (!li_request_validate_header(con)) {
/* skip mainvr handling */
con->state = LI_CON_STATE_WRITE;
con->info.keep_alive = FALSE;
con->in->is_closed = TRUE;
if (!forward_response_body(con)) return FALSE;
} else {
/* When does a client ask for 100 Continue? probably not while trying to ddos us
* as post content probably goes to a dynamic backend anyway, we don't
* care about the rare cases we could determine that we don't want a request at all
* before sending it to a backend - so just send the stupid header
*/
if (con->expect_100_cont) {
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "send 100 Continue");
}
li_chunkqueue_append_mem(con->raw_out, CONST_STR_LEN("HTTP/1.1 100 Continue\r\n\r\n"));
con->expect_100_cont = FALSE;
}
con->state = LI_CON_STATE_HANDLE_MAINVR;
li_action_enter(con->mainvr, con->srv->mainaction);
li_vrequest_handle_request_headers(con->mainvr);
}
} else {
parse_request_body(con);
}
return TRUE;
}
static void connection_update_io_timeout(liConnection *con) {
liWorker *wrk = con->wrk;
if ((con->io_timeout_elem.ts + 1.0) < ev_now(wrk->loop)) {
li_waitqueue_push(&wrk->io_timeout_queue, &con->io_timeout_elem);
}
}
static G_GNUC_WARN_UNUSED_RESULT gboolean connection_try_read(liConnection *con) {
liNetworkStatus res;
/* con->can_read = TRUE; */
if (!con->in->is_closed) {
goffset transferred;
transferred = con->raw_in->length;
if (NULL == con->raw_in_buffer && NULL != con->wrk->network_read_buf) {
/* reuse worker buf if needed */
con->raw_in_buffer = con->wrk->network_read_buf;
con->wrk->network_read_buf = NULL;
}
if (con->srv_sock->read_cb) {
res = con->srv_sock->read_cb(con);
} else {
res = li_network_read(con->mainvr, con->sock_watcher.fd, con->raw_in, &con->raw_in_buffer);
}
if (NULL == con->wrk->network_read_buf && NULL != con->raw_in_buffer
&& 1 == g_atomic_int_get(&con->raw_in_buffer->refcount)) {
/* move buffer back to worker if we didn't use it */
con->wrk->network_read_buf = con->raw_in_buffer;
con->raw_in_buffer = NULL;
}
transferred = con->raw_in->length - transferred;
if (transferred > 0) connection_update_io_timeout(con);
li_vrequest_update_stats_in(con->mainvr, transferred);
switch (res) {
case LI_NETWORK_STATUS_SUCCESS:
con->can_read = FALSE; /* for now we still need the EV_READ event to get a callback */
if (!connection_handle_read(con)) return FALSE;
break;
case LI_NETWORK_STATUS_FATAL_ERROR:
_ERROR(con->srv, con->mainvr, "%s", "network read fatal error");
li_connection_error(con);
return FALSE;
case LI_NETWORK_STATUS_CONNECTION_CLOSE:
con->raw_in->is_closed = TRUE;
/* shutdown(con->sock_watcher.fd, SHUT_RD); */ /* useless anyway */
ev_io_stop(con->wrk->loop, &con->sock_watcher);
close(con->sock_watcher.fd);
ev_io_set(&con->sock_watcher, -1, 0);
connection_close(con);
return FALSE;
case LI_NETWORK_STATUS_WAIT_FOR_EVENT:
con->can_read = FALSE;
break;
}
}
return TRUE;
}
static G_GNUC_WARN_UNUSED_RESULT gboolean connection_try_write(liConnection *con) {
liNetworkStatus res;
con->can_write = TRUE;
if (con->raw_out->length > 0) {
goffset transferred;
static const goffset WRITE_MAX = 256*1024; /* 256kB */
goffset write_max;
if (con->mainvr->throttled) {
write_max = MIN(con->mainvr->throttle.magazine, WRITE_MAX);
} else {
write_max = WRITE_MAX;
}
if (write_max > 0) {
transferred = con->raw_out->length;
if (con->srv_sock->write_cb) {
res = con->srv_sock->write_cb(con, write_max);
} else {
res = li_network_write(con->mainvr, con->sock_watcher.fd, con->raw_out, write_max);
}
transferred = transferred - con->raw_out->length;
con->info.out_queue_length = con->raw_out->length;
if (transferred > 0) {
connection_update_io_timeout(con);
li_vrequest_joblist_append(con->mainvr);
}
con->can_write = FALSE; /* for now we still need the EV_WRITE event to get a callback */
switch (res) {
case LI_NETWORK_STATUS_SUCCESS:
break;
case LI_NETWORK_STATUS_FATAL_ERROR:
_ERROR(con->srv, con->mainvr, "%s", "network write fatal error");
li_connection_error(con);
return FALSE;
case LI_NETWORK_STATUS_CONNECTION_CLOSE:
connection_close(con);
return FALSE;
case LI_NETWORK_STATUS_WAIT_FOR_EVENT:
break;
}
} else {
transferred = 0;
}
li_vrequest_update_stats_out(con->mainvr, transferred);
if (con->mainvr->throttled) {
li_throttle_update(con->mainvr, transferred, WRITE_MAX);
}
}
return TRUE;
}
void connection_handle_io(liConnection *con) {
/* ensure that the connection is always in the io timeout queue */
if (!con->io_timeout_elem.queued)
li_waitqueue_push(&con->wrk->io_timeout_queue, &con->io_timeout_elem);
if (con->can_read)
if (!connection_try_read(con)) return;
if (con->can_write)
if (!connection_try_write(con)) return;
if (!check_response_done(con)) return;
update_io_events(con);
}
static void connection_cb(struct ev_loop *loop, ev_io *w, int revents) {
liConnection *con = (liConnection*) w->data;
UNUSED(loop);
if (revents & EV_READ) con->can_read = TRUE;
if (revents & EV_WRITE) con->can_write = TRUE;
if (revents & EV_ERROR) {
/* if this happens, we have a serious bug in the event handling */
VR_ERROR(con->mainvr, "%s", "EV_ERROR encountered, dropping connection!");
li_connection_error(con);
return;
}
connection_handle_io(con);
}
static void connection_keepalive_cb(struct ev_loop *loop, ev_timer *w, int revents) {
liConnection *con = (liConnection*) w->data;
UNUSED(loop); UNUSED(revents);
li_worker_con_put(con);
}
static G_GNUC_WARN_UNUSED_RESULT gboolean mainvr_handle_response_headers(liVRequest *vr) {
liConnection *con = LI_CONTAINER_OF(vr->coninfo, liConnection, info);
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "read request/handle response header");
}
if (con->can_read)
if (!connection_try_read(con)) return FALSE;
parse_request_body(con);
if (con->can_write)
if (!connection_try_write(con)) return FALSE;
update_io_events(con);
return TRUE;
}
static G_GNUC_WARN_UNUSED_RESULT gboolean mainvr_handle_response_body(liVRequest *vr) {
liConnection *con = LI_CONTAINER_OF(vr->coninfo, liConnection, info);
if (!check_response_done(con)) return TRUE;
if (CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "%s", "write response");
}
if (con->can_read)
if (!connection_try_read(con)) return FALSE;
parse_request_body(con);
if (!forward_response_body(con)) return FALSE;
if (con->can_write)
if (!connection_try_write(con)) return FALSE;
if (!check_response_done(con)) return TRUE;
update_io_events(con);
return TRUE;
}
static G_GNUC_WARN_UNUSED_RESULT gboolean mainvr_handle_response_error(liVRequest *vr) {
liConnection *con = LI_CONTAINER_OF(vr->coninfo, liConnection, info);
if (!li_connection_internal_error(con)) return FALSE;
if (con->can_read)
if (!connection_try_read(con)) return FALSE;
if (con->can_write)
if (!connection_try_write(con)) return FALSE;
update_io_events(con);
return FALSE;
}
static G_GNUC_WARN_UNUSED_RESULT gboolean mainvr_handle_request_headers(liVRequest *vr) {
liConnection *con = LI_CONTAINER_OF(vr->coninfo, liConnection, info);
/* start reading input */
if (con->can_read)
if (!connection_try_read(con)) return FALSE;
parse_request_body(con);
update_io_events(con);
return TRUE;
}
static gboolean mainvr_handle_check_io(liVRequest *vr) {
liConnection *con = LI_CONTAINER_OF(vr->coninfo, liConnection, info);
if (con->can_read)
if (!connection_try_read(con)) return FALSE;
if (con->can_write)
if (!connection_try_write(con)) return FALSE;
update_io_events(con);
return TRUE;
}
static const liConCallbacks con_callbacks = {
mainvr_handle_request_headers,
mainvr_handle_response_headers,
mainvr_handle_response_body,
mainvr_handle_response_error,
mainvr_handle_check_io
};
liConnection* li_connection_new(liWorker *wrk) {
liServer *srv = wrk->srv;
liConnection *con = g_slice_new0(liConnection);
con->wrk = wrk;
con->srv = srv;
con->state = LI_CON_STATE_DEAD;
con->response_headers_sent = FALSE;
con->expect_100_cont = FALSE;
ev_init(&con->sock_watcher, connection_cb);
ev_io_set(&con->sock_watcher, -1, 0);
con->sock_watcher.data = con;
con->info.remote_addr_str = g_string_sized_new(INET6_ADDRSTRLEN);
con->info.local_addr_str = g_string_sized_new(INET6_ADDRSTRLEN);
con->info.is_ssl = FALSE;
con->info.keep_alive = TRUE;
con->raw_in = li_chunkqueue_new();
con->raw_out = li_chunkqueue_new();
con->info.callbacks = &con_callbacks;
con->mainvr = li_vrequest_new(wrk, &con->info);
li_http_request_parser_init(&con->req_parser_ctx, &con->mainvr->request, con->raw_in);
con->in = con->mainvr->vr_in;
con->out = con->mainvr->vr_out;
li_chunkqueue_set_limit(con->raw_in, con->in->limit);
li_chunkqueue_set_limit(con->raw_out, con->out->limit);
li_cqlimit_set_limit(con->raw_in->limit, 512*1024);
li_cqlimit_set_limit(con->raw_out->limit, 512*1024);
con->keep_alive_data.link = NULL;
con->keep_alive_data.timeout = 0;
con->keep_alive_data.max_idle = 0;
ev_init(&con->keep_alive_data.watcher, connection_keepalive_cb);
con->keep_alive_data.watcher.data = con;
con->can_read = con->can_write = TRUE;
con->io_timeout_elem.data = con;
return con;
}
void li_connection_reset(liConnection *con) {
con->state = LI_CON_STATE_DEAD;
con->response_headers_sent = FALSE;
con->expect_100_cont = FALSE;
if (con->srv_sock->close_cb)
con->srv_sock->close_cb(con);
li_server_socket_release(con->srv_sock);
con->srv_sock = NULL;
con->srv_sock_data = NULL;
con->info.is_ssl = FALSE;
ev_io_stop(con->wrk->loop, &con->sock_watcher);
if (con->sock_watcher.fd != -1) {
if (con->raw_in->is_closed) { /* read already got EOF */
shutdown(con->sock_watcher.fd, SHUT_RDWR);
close(con->sock_watcher.fd);
} else {
li_worker_add_closing_socket(con->wrk, con->sock_watcher.fd);
}
}
ev_io_set(&con->sock_watcher, -1, 0);
ev_set_cb(&con->sock_watcher, connection_cb);
li_chunkqueue_reset(con->raw_in);
li_chunkqueue_reset(con->raw_out);
con->info.out_queue_length = 0;
li_buffer_release(con->raw_in_buffer);
con->raw_in_buffer = NULL;
li_vrequest_reset(con->mainvr, FALSE);
li_throttle_reset(con->mainvr);
/* restore chunkqueue limits */
li_chunkqueue_set_limit(con->raw_in, con->in->limit);
li_chunkqueue_set_limit(con->raw_out, con->out->limit);
li_cqlimit_reset(con->raw_in->limit);
li_cqlimit_reset(con->raw_out->limit);
li_cqlimit_set_limit(con->raw_in->limit, 512*1024);
li_cqlimit_set_limit(con->raw_out->limit, 512*1024);
li_http_request_parser_reset(&con->req_parser_ctx);
g_string_truncate(con->info.remote_addr_str, 0);
li_sockaddr_clear(&con->info.remote_addr);
g_string_truncate(con->info.local_addr_str, 0);
li_sockaddr_clear(&con->info.local_addr);
con->info.keep_alive = TRUE;
if (con->keep_alive_data.link) {
g_queue_delete_link(&con->wrk->keep_alive_queue, con->keep_alive_data.link);
con->keep_alive_data.link = NULL;
}
con->keep_alive_data.timeout = 0;
con->keep_alive_data.max_idle = 0;
ev_timer_stop(con->wrk->loop, &con->keep_alive_data.watcher);
con->keep_alive_requests = 0;
/* reset stats */
con->info.stats.bytes_in = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_in_5s = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_in_5s_diff = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_out = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_out_5s = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_out_5s_diff = G_GUINT64_CONSTANT(0);
con->info.stats.last_avg = 0;
con->can_read = con->can_write = TRUE;
/* remove from timeout queue */
li_waitqueue_remove(&con->wrk->io_timeout_queue, &con->io_timeout_elem);
}
static void li_connection_reset_keep_alive(liConnection *con) {
liVRequest *vr = con->mainvr;
/* only start keep alive watcher if there isn't more input data already */
if (con->raw_in->length == 0) {
ev_timer_stop(con->wrk->loop, &con->keep_alive_data.watcher);
{
con->keep_alive_data.max_idle = CORE_OPTION(LI_CORE_OPTION_MAX_KEEP_ALIVE_IDLE).number;
if (con->keep_alive_data.max_idle == 0) {
li_worker_con_put(con);
return;
}
con->keep_alive_data.timeout = ev_now(con->wrk->loop) + con->keep_alive_data.max_idle;
if (con->keep_alive_data.max_idle == con->srv->keep_alive_queue_timeout) {
/* queue is sorted by con->keep_alive_data.timeout */
gboolean need_start = (0 == con->wrk->keep_alive_queue.length);
con->keep_alive_data.timeout = ev_now(con->wrk->loop) + con->srv->keep_alive_queue_timeout;
g_queue_push_tail(&con->wrk->keep_alive_queue, con);
con->keep_alive_data.link = g_queue_peek_tail_link(&con->wrk->keep_alive_queue);
if (need_start)
li_worker_check_keepalive(con->wrk);
} else {
ev_timer_set(&con->keep_alive_data.watcher, con->keep_alive_data.max_idle, 0);
ev_timer_start(con->wrk->loop, &con->keep_alive_data.watcher);
}
}
/* remove from timeout queue */
li_waitqueue_remove(&con->wrk->io_timeout_queue, &con->io_timeout_elem);
}
con->state = LI_CON_STATE_KEEP_ALIVE;
con->response_headers_sent = FALSE;
con->expect_100_cont = FALSE;
update_io_events(con);
con->info.keep_alive = TRUE;
con->raw_out->is_closed = FALSE;
con->info.out_queue_length = con->raw_out->length;
li_throttle_reset(con->mainvr);
li_vrequest_reset(con->mainvr, TRUE);
li_http_request_parser_reset(&con->req_parser_ctx);
/* restore chunkqueue limits (don't reset, we might still have some data in raw_in) */
li_chunkqueue_set_limit(con->raw_in, con->in->limit);
li_chunkqueue_set_limit(con->raw_out, con->out->limit);
li_cqlimit_set_limit(con->raw_in->limit, 512*1024);
li_cqlimit_set_limit(con->raw_out->limit, 512*1024);
/* reset stats */
con->info.stats.bytes_in = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_in_5s = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_in_5s_diff = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_out = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_out_5s = G_GUINT64_CONSTANT(0);
con->info.stats.bytes_out_5s_diff = G_GUINT64_CONSTANT(0);
con->info.stats.last_avg = 0;
if (con->raw_in->length != 0) {
/* start handling next request if data is already available */
if (!connection_handle_read(con)) return;
}
}
void li_connection_free(liConnection *con) {
con->state = LI_CON_STATE_DEAD;
con->response_headers_sent = FALSE;
con->expect_100_cont = FALSE;
li_server_socket_release(con->srv_sock);
con->srv_sock = NULL;
if (con->wrk)
ev_io_stop(con->wrk->loop, &con->sock_watcher);
if (con->sock_watcher.fd != -1) {
/* just close it; _free should only be called on dead connections anyway */
shutdown(con->sock_watcher.fd, SHUT_WR);
close(con->sock_watcher.fd);
}
ev_io_set(&con->sock_watcher, -1, 0);
g_string_free(con->info.remote_addr_str, TRUE);
li_sockaddr_clear(&con->info.remote_addr);
g_string_free(con->info.local_addr_str, TRUE);
li_sockaddr_clear(&con->info.local_addr);
con->info.keep_alive = TRUE;
li_chunkqueue_free(con->raw_in);
li_chunkqueue_free(con->raw_out);
li_buffer_release(con->raw_in_buffer);
li_throttle_reset(con->mainvr);
li_vrequest_free(con->mainvr);
li_http_request_parser_clear(&con->req_parser_ctx);
if (con->keep_alive_data.link && con->wrk) {
g_queue_delete_link(&con->wrk->keep_alive_queue, con->keep_alive_data.link);
con->keep_alive_data.link = NULL;
}
con->keep_alive_data.timeout = 0;
con->keep_alive_data.max_idle = 0;
if (con->wrk)
ev_timer_stop(con->wrk->loop, &con->keep_alive_data.watcher);
g_slice_free(liConnection, con);
}
void li_connection_start(liConnection *con, liSocketAddress remote_addr, int s, liServerSocket *srv_sock) {
ev_io_set(&con->sock_watcher, s, 0);
con->srv_sock = srv_sock;
con->state = LI_CON_STATE_REQUEST_START;
con->mainvr->ts_started = con->ts_started = CUR_TS(con->wrk);
con->info.remote_addr = remote_addr;
li_sockaddr_to_string(remote_addr, con->info.remote_addr_str, FALSE);
con->info.local_addr = li_sockaddr_dup(srv_sock->local_addr);
li_sockaddr_to_string(con->info.local_addr, con->info.local_addr_str, FALSE);
li_waitqueue_push(&con->wrk->io_timeout_queue, &con->io_timeout_elem);
if (srv_sock->new_cb) {
if (!srv_sock->new_cb(con)) {
li_connection_error(con);
return;
}
}
if (con->can_read)
if (!connection_try_read(con)) return;
update_io_events(con);
}
gchar *li_connection_state_str(liConnectionState state) {
static const gchar *states[] = {
"dead",
"keep-alive",
"request start",
"read request header",
"handle main vrequest",
"write"
};
return (gchar*)states[state];
}
liConnection* li_connection_from_vrequest(liVRequest *vr) {
liConnection *con;
if (vr->coninfo->callbacks != &con_callbacks) return NULL;
con = LI_CONTAINER_OF(vr->coninfo, liConnection, info);
return con;
}