/*
- include/proto/dumpstats.h
- This file contains definitions of some primitives to dedicated to
- statistics output.
-
- Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation, version 2.1
- exclusively.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-*/
+ * include/proto/dumpstats.h
+ * This file contains definitions of some primitives to dedicated to
+ * statistics output.
+ *
+ * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef _PROTO_DUMPSTATS_H
#define _PROTO_DUMPSTATS_H
#define STAT_CLI_O_ERR 7 /* dump errors */
+int stats_accept(struct listener *l, int cfd, struct sockaddr_storage *addr);
int stats_sock_parse_request(struct stream_interface *si, char *line);
void stats_io_handler(struct stream_interface *si);
int stats_dump_raw_to_buffer(struct session *s, struct buffer *rep);
#include <types/session.h>
void get_frt_addr(struct session *s);
-int event_accept(int fd);
+int frontend_accept(struct listener *l, int cfd, struct sockaddr_storage *addr);
#endif /* _PROTO_FRONTEND_H */
#include <types/proto_tcp.h>
#include <types/task.h>
-int tcp_event_accept(int fd);
int tcpv4_bind_socket(int fd, int flags, struct sockaddr_in *local, struct sockaddr_in *remote);
void tcpv4_add_listener(struct listener *listener);
void tcpv6_add_listener(struct listener *listener);
/*
- include/proto/proto_uxst.h
- This file contains UNIX-stream socket protocol definitions.
-
- Copyright (C) 2000-2008 Willy Tarreau - w@1wt.eu
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation, version 2.1
- exclusively.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-*/
+ * include/proto/proto_uxst.h
+ * This file contains UNIX-stream socket protocol definitions.
+ *
+ * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef _PROTO_PROTO_UXST_H
#define _PROTO_PROTO_UXST_H
#include <types/session.h>
#include <types/task.h>
-int uxst_event_accept(int fd);
void uxst_add_listener(struct listener *listener);
-int uxst_req_analyser_stats(struct session *s, struct buffer *req, int an_bit);
#endif /* _PROTO_PROTO_UXST_H */
/*
- include/proto/stream_sock.h
- This file contains client-side definitions.
-
- Copyright (C) 2000-2008 Willy Tarreau - w@1wt.eu
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation, version 2.1
- exclusively.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-*/
+ * include/proto/stream_sock.h
+ * This file contains client-side definitions.
+ *
+ * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#ifndef _PROTO_STREAM_SOCK_H
#define _PROTO_STREAM_SOCK_H
/* main event functions used to move data between sockets and buffers */
+int stream_sock_accept(int fd);
int stream_sock_read(int fd);
int stream_sock_write(int fd);
void stream_sock_data_finish(struct stream_interface *si);
unsigned int backlog; /* if set, listen backlog */
struct listener *next; /* next address for the same proxy, or NULL */
struct list proto_list; /* list in the protocol header */
- int (*accept)(int fd); /* accept() function passed to fdtab[] */
+ int (*accept)(struct listener *l, int fd, struct sockaddr_storage *addr); /* upper layer's accept() */
struct task * (*handler)(struct task *t); /* protocol handler. It is a task */
int *timeout; /* pointer to client-side timeout */
- void *private; /* any private data which may be used by accept() */
+ struct proxy *frontend; /* the frontend this listener belongs to, or NULL */
unsigned int analysers; /* bitmap of required protocol analysers */
int nice; /* nice value to assign to the instanciated tasks */
union { /* protocol-dependant access restrictions */
sa_family_t sock_family; /* socket family, for sockaddr */
socklen_t sock_addrlen; /* socket address length, used by bind() */
int l3_addrlen; /* layer3 address length, used by hashes */
+ int (*accept)(int fd); /* generic accept function */
int (*read)(int fd); /* generic read function */
int (*write)(int fd); /* generic write function */
int (*bind_all)(struct protocol *proto); /* bind all unbound listeners */
#include <proto/buffers.h>
#include <proto/checks.h>
#include <proto/dumpstats.h>
+#include <proto/frontend.h>
#include <proto/httperr.h>
#include <proto/lb_chash.h>
#include <proto/lb_fwlc.h>
listener->maxconn = curproxy->maxconn;
listener->backlog = curproxy->backlog;
listener->timeout = &curproxy->timeout.client;
- listener->accept = event_accept;
- listener->private = curproxy;
+ listener->accept = frontend_accept;
+ listener->frontend = curproxy;
listener->handler = process_session;
listener->analysers |= curproxy->fe_req_ana;
/*
- * Functions dedicated to statistics output
+ * Functions dedicated to statistics output and the stats socket
*
- * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
+ * Copyright 2000-2010 Willy Tarreau <w@1wt.eu>
* Copyright 2007-2009 Krzysztof Piotr Oledzki <ole@ans.pl>
*
* This program is free software; you can redistribute it and/or
#include <proto/dumpstats.h>
#include <proto/fd.h>
#include <proto/freq_ctr.h>
+#include <proto/log.h>
#include <proto/pipe.h>
#include <proto/proto_uxst.h>
#include <proto/proxy.h>
#include <proto/session.h>
#include <proto/server.h>
#include <proto/stream_interface.h>
+#include <proto/stream_sock.h>
#include <proto/task.h>
const char stats_sock_usage_msg[] =
"Permission denied\n"
"";
+/* This function is called from the protocol layer accept() in order to instanciate
+ * a new stats socket. It returns a positive value upon success, 0 if the connection
+ * needs to be closed and ignored, or a negative value upon critical failure.
+ */
+int stats_accept(struct listener *l, int cfd, struct sockaddr_storage *addr)
+{
+ struct proxy *p = l->frontend; /* attached frontend */
+ struct session *s;
+ struct task *t;
+
+ if ((s = pool_alloc2(pool2_session)) == NULL) {
+ Alert("out of memory in stats_accept().\n");
+ goto out_close;
+ }
+
+ LIST_ADDQ(&sessions, &s->list);
+ LIST_INIT(&s->back_refs);
+
+ s->flags = 0;
+ s->term_trace = 0;
+ s->cli_addr = *addr;
+
+ if ((t = task_new()) == NULL) {
+ Alert("out of memory in stats_accept().\n");
+ goto out_free_session;
+ }
+
+ t->process = l->handler;
+ t->context = s;
+ t->nice = l->nice;
+
+ s->task = t;
+ s->listener = l;
+ s->fe = s->be = p;
+
+ s->req = s->rep = NULL; /* will be allocated later */
+
+ s->si[0].state = s->si[0].prev_state = SI_ST_EST;
+ s->si[0].err_type = SI_ET_NONE;
+ s->si[0].err_loc = NULL;
+ s->si[0].owner = t;
+ s->si[0].update = stream_sock_data_finish;
+ s->si[0].shutr = stream_sock_shutr;
+ s->si[0].shutw = stream_sock_shutw;
+ s->si[0].chk_rcv = stream_sock_chk_rcv;
+ s->si[0].chk_snd = stream_sock_chk_snd;
+ s->si[0].connect = NULL;
+ s->si[0].iohandler = NULL;
+ s->si[0].fd = cfd;
+ s->si[0].flags = SI_FL_NONE;
+ if (s->fe->options2 & PR_O2_INDEPSTR)
+ s->si[0].flags |= SI_FL_INDEP_STR;
+ s->si[0].exp = TICK_ETERNITY;
+
+ s->si[1].state = s->si[1].prev_state = SI_ST_INI;
+ s->si[1].err_type = SI_ET_NONE;
+ s->si[1].err_loc = NULL;
+ s->si[1].owner = t;
+ s->si[1].exp = TICK_ETERNITY;
+ s->si[1].fd = -1; /* just to help with debugging */
+ s->si[1].flags = SI_FL_NONE;
+ if (s->be->options2 & PR_O2_INDEPSTR)
+ s->si[1].flags |= SI_FL_INDEP_STR;
+
+ stream_int_register_handler(&s->si[1], stats_io_handler);
+ s->si[1].private = s;
+ s->si[1].st1 = 0;
+ s->si[1].st0 = STAT_CLI_INIT;
+
+ s->srv = s->prev_srv = s->srv_conn = NULL;
+ s->pend_pos = NULL;
+
+ s->store_count = 0;
+
+ memset(&s->logs, 0, sizeof(s->logs));
+ memset(&s->txn, 0, sizeof(s->txn));
+
+ s->logs.accept_date = date; /* user-visible date for logging */
+ s->logs.tv_accept = now; /* corrected date for internal use */
+
+ s->data_state = DATA_ST_INIT;
+ s->data_source = DATA_SRC_NONE;
+ s->uniq_id = totalconn;
+ proxy_inc_fe_ctr(l, p); /* note: cum_beconn will be increased once assigned */
+
+ if (fcntl(cfd, F_SETFL, O_NONBLOCK) == -1) {
+ Alert("accept(): cannot set the socket in non blocking mode. Giving up.\n");
+ goto out_free_task;
+ }
+
+ if ((s->req = pool_alloc2(pool2_buffer)) == NULL)
+ goto out_free_task;
+
+ s->req->size = global.tune.bufsize;
+ buffer_init(s->req);
+ s->req->prod = &s->si[0];
+ s->req->cons = &s->si[1];
+ s->si[0].ib = s->si[1].ob = s->req;
+ s->req->flags |= BF_READ_ATTACHED; /* the producer is already connected */
+ s->req->flags |= BF_READ_DONTWAIT; /* we plan to read small requests */
+
+ s->req->analysers = l->analysers;
+
+ s->req->wto = TICK_ETERNITY;
+ s->req->cto = TICK_ETERNITY;
+ s->req->rto = TICK_ETERNITY;
+
+ if ((s->rep = pool_alloc2(pool2_buffer)) == NULL)
+ goto out_free_req;
+
+ s->rep->size = global.tune.bufsize;
+ buffer_init(s->rep);
+
+ s->rep->prod = &s->si[1];
+ s->rep->cons = &s->si[0];
+ s->si[0].ob = s->si[1].ib = s->rep;
+
+ s->rep->rto = TICK_ETERNITY;
+ s->rep->cto = TICK_ETERNITY;
+ s->rep->wto = TICK_ETERNITY;
+
+ s->req->rex = TICK_ETERNITY;
+ s->req->wex = TICK_ETERNITY;
+ s->req->analyse_exp = TICK_ETERNITY;
+ s->rep->rex = TICK_ETERNITY;
+ s->rep->wex = TICK_ETERNITY;
+ s->rep->analyse_exp = TICK_ETERNITY;
+
+ t->expire = TICK_ETERNITY;
+
+ if (l->timeout) {
+ s->req->rto = *l->timeout;
+ s->rep->wto = *l->timeout;
+ }
+
+ fd_insert(cfd);
+ fdtab[cfd].owner = &s->si[0];
+ fdtab[cfd].state = FD_STREADY;
+ fdtab[cfd].cb[DIR_RD].f = l->proto->read;
+ fdtab[cfd].cb[DIR_RD].b = s->req;
+ fdtab[cfd].cb[DIR_WR].f = l->proto->write;
+ fdtab[cfd].cb[DIR_WR].b = s->rep;
+ fdinfo[cfd].peeraddr = (struct sockaddr *)&s->cli_addr;
+ fdinfo[cfd].peerlen = sizeof(s->cli_addr);
+
+ EV_FD_SET(cfd, DIR_RD);
+
+ task_wakeup(t, TASK_WOKEN_INIT);
+ return 1;
+
+ out_free_req:
+ pool_free2(pool2_buffer, s->req);
+ out_free_task:
+ task_free(t);
+ out_free_session:
+ LIST_DEL(&s->list);
+ pool_free2(pool2_session, s);
+ out_close:
+ return -1;
+}
+
/* This function parses a "stats" statement in the "global" section. It returns
* -1 if there is any error, otherwise zero. If it returns -1, it may write an
* error message into ther <err> buffer, for at most <errlen> bytes, trailing
global.stats_fe->last_change = now.tv_sec;
global.stats_fe->id = strdup("GLOBAL");
global.stats_fe->cap = PR_CAP_FE;
+ global.stats_fe->maxconn = global.stats_sock.maxconn;
}
global.stats_sock.state = LI_INIT;
global.stats_sock.options = LI_O_NONE;
- global.stats_sock.accept = uxst_event_accept;
+ global.stats_sock.accept = stats_accept;
global.stats_sock.handler = process_session;
global.stats_sock.analysers = 0;
global.stats_sock.nice = -64; /* we want to boost priority for local stats */
- global.stats_sock.private = global.stats_fe; /* must point to the frontend */
+ global.stats_sock.frontend = global.stats_fe;
global.stats_sock.perm.ux.level = ACCESS_LVL_OPER; /* default access level */
global.stats_fe->timeout.client = MS_TO_TICKS(10000); /* default timeout of 10 seconds */
global.maxsock -= global.stats_sock.maxconn;
global.stats_sock.maxconn = maxconn;
global.maxsock += global.stats_sock.maxconn;
+ if (global.stats_fe)
+ global.stats_fe->maxconn = global.stats_sock.maxconn;
}
else {
snprintf(err, errlen, "'stats' only supports 'socket', 'maxconn' and 'timeout' in 'global' section");
s->flags |= SN_FRT_ADDR_SET;
}
-/*
- * FIXME: This should move to the STREAM_SOCK code then split into TCP and HTTP.
- */
-
-/*
- * this function is called on a read event from a listen socket, corresponding
- * to an accept. It tries to accept as many connections as possible.
- * It returns 0.
+/* This function is called from the protocol layer accept() in order to instanciate
+ * a new proxy. It returns a positive value upon success, 0 if the connection needs
+ * to be closed and ignored, or a negative value upon critical failure.
*/
-int event_accept(int fd) {
- struct listener *l = fdtab[fd].owner;
- struct proxy *p = (struct proxy *)l->private; /* attached frontend */
+int frontend_accept(struct listener *l, int cfd, struct sockaddr_storage *addr)
+{
+ struct proxy *p = l->frontend;
struct session *s;
struct http_txn *txn;
struct task *t;
- int cfd;
- int max_accept = global.tune.maxaccept;
- if (p->fe_sps_lim) {
- int max = freq_ctr_remain(&p->fe_sess_per_sec, p->fe_sps_lim, 0);
- if (max_accept > max)
- max_accept = max;
+ if ((s = pool_alloc2(pool2_session)) == NULL) { /* disable this proxy for a while */
+ Alert("out of memory in event_accept().\n");
+ goto out_close;
}
- while (p->feconn < p->maxconn && actconn < global.maxconn && max_accept--) {
- struct sockaddr_storage addr;
- socklen_t laddr = sizeof(addr);
-
- if ((cfd = accept(fd, (struct sockaddr *)&addr, &laddr)) == -1) {
- switch (errno) {
- case EAGAIN:
- case EINTR:
- case ECONNABORTED:
- return 0; /* nothing more to accept */
- case ENFILE:
- send_log(p, LOG_EMERG,
- "Proxy %s reached system FD limit at %d. Please check system tunables.\n",
- p->id, maxfd);
- return 0;
- case EMFILE:
- send_log(p, LOG_EMERG,
- "Proxy %s reached process FD limit at %d. Please check 'ulimit-n' and restart.\n",
- p->id, maxfd);
- return 0;
- case ENOBUFS:
- case ENOMEM:
- send_log(p, LOG_EMERG,
- "Proxy %s reached system memory limit at %d sockets. Please check system tunables.\n",
- p->id, maxfd);
- return 0;
- default:
- return 0;
- }
- }
-
- if (l->nbconn >= l->maxconn) {
- /* too many connections, we shoot this one and return.
- * FIXME: it would be better to simply switch the listener's
- * state to LI_FULL and disable the FD. We could re-enable
- * it upon fd_delete(), but this requires all protocols to
- * be switched.
- */
- goto out_close;
+ LIST_ADDQ(&sessions, &s->list);
+ LIST_INIT(&s->back_refs);
+
+ s->flags = 0;
+ s->term_trace = 0;
+ s->cli_addr = *addr;
+
+ /* if this session comes from a known monitoring system, we want to ignore
+ * it as soon as possible, which means closing it immediately for TCP.
+ */
+ if (p->mon_mask.s_addr &&
+ addr->ss_family == AF_INET &&
+ (((struct sockaddr_in *)addr)->sin_addr.s_addr & p->mon_mask.s_addr) == p->mon_net.s_addr) {
+ if (p->mode == PR_MODE_TCP) {
+ pool_free2(pool2_session, s);
+ return 0;
}
+ s->flags |= SN_MONITOR;
+ }
- if ((s = pool_alloc2(pool2_session)) == NULL) { /* disable this proxy for a while */
- Alert("out of memory in event_accept().\n");
- EV_FD_CLR(fd, DIR_RD);
- p->state = PR_STIDLE;
- goto out_close;
- }
+ if ((t = task_new()) == NULL) { /* disable this proxy for a while */
+ Alert("out of memory in event_accept().\n");
+ goto out_free_session;
+ }
- LIST_ADDQ(&sessions, &s->list);
- LIST_INIT(&s->back_refs);
+ if ((fcntl(cfd, F_SETFL, O_NONBLOCK) == -1) ||
+ (setsockopt(cfd, IPPROTO_TCP, TCP_NODELAY,
+ (char *) &one, sizeof(one)) == -1)) {
+ Alert("accept(): cannot set the socket in non blocking mode. Giving up\n");
+ goto out_free_task;
+ }
- s->flags = 0;
- s->term_trace = 0;
+ if (p->options & PR_O_TCP_CLI_KA)
+ setsockopt(cfd, SOL_SOCKET, SO_KEEPALIVE, (char *) &one, sizeof(one));
+
+ if (p->options & PR_O_TCP_NOLING)
+ setsockopt(cfd, SOL_SOCKET, SO_LINGER, (struct linger *) &nolinger, sizeof(struct linger));
+
+ if (global.tune.client_sndbuf)
+ setsockopt(cfd, SOL_SOCKET, SO_SNDBUF, &global.tune.client_sndbuf, sizeof(global.tune.client_sndbuf));
+
+ if (global.tune.client_rcvbuf)
+ setsockopt(cfd, SOL_SOCKET, SO_RCVBUF, &global.tune.client_rcvbuf, sizeof(global.tune.client_rcvbuf));
+
+ t->process = l->handler;
+ t->context = s;
+ t->nice = l->nice;
+
+ s->task = t;
+ s->listener = l;
+
+ /* Note: initially, the session's backend points to the frontend.
+ * This changes later when switching rules are executed or
+ * when the default backend is assigned.
+ */
+ s->be = s->fe = p;
+
+ s->req = s->rep = NULL; /* will be allocated later */
+
+ s->si[0].state = s->si[0].prev_state = SI_ST_EST;
+ s->si[0].err_type = SI_ET_NONE;
+ s->si[0].err_loc = NULL;
+ s->si[0].owner = t;
+ s->si[0].update = stream_sock_data_finish;
+ s->si[0].shutr = stream_sock_shutr;
+ s->si[0].shutw = stream_sock_shutw;
+ s->si[0].chk_rcv = stream_sock_chk_rcv;
+ s->si[0].chk_snd = stream_sock_chk_snd;
+ s->si[0].connect = NULL;
+ s->si[0].iohandler = NULL;
+ s->si[0].fd = cfd;
+ s->si[0].flags = SI_FL_NONE | SI_FL_CAP_SPLTCP; /* TCP splicing capable */
+ if (s->fe->options2 & PR_O2_INDEPSTR)
+ s->si[0].flags |= SI_FL_INDEP_STR;
+ s->si[0].exp = TICK_ETERNITY;
+
+ s->si[1].state = s->si[1].prev_state = SI_ST_INI;
+ s->si[1].err_type = SI_ET_NONE;
+ s->si[1].err_loc = NULL;
+ s->si[1].owner = t;
+ s->si[1].update = stream_sock_data_finish;
+ s->si[1].shutr = stream_sock_shutr;
+ s->si[1].shutw = stream_sock_shutw;
+ s->si[1].chk_rcv = stream_sock_chk_rcv;
+ s->si[1].chk_snd = stream_sock_chk_snd;
+ s->si[1].connect = tcpv4_connect_server;
+ s->si[1].iohandler = NULL;
+ s->si[1].exp = TICK_ETERNITY;
+ s->si[1].fd = -1; /* just to help with debugging */
+ s->si[1].flags = SI_FL_NONE;
+ if (s->be->options2 & PR_O2_INDEPSTR)
+ s->si[1].flags |= SI_FL_INDEP_STR;
+
+ s->srv = s->prev_srv = s->srv_conn = NULL;
+ s->pend_pos = NULL;
+ s->conn_retries = s->be->conn_retries;
+
+ /* init store persistence */
+ s->store_count = 0;
+
+ /* FIXME: the logs are horribly complicated now, because they are
+ * defined in <p>, <p>, and later <be> and <be>.
+ */
+
+ if (s->flags & SN_MONITOR)
+ s->logs.logwait = 0;
+ else
+ s->logs.logwait = p->to_log;
+
+ if (s->logs.logwait & LW_REQ)
+ s->do_log = http_sess_log;
+ else
+ s->do_log = tcp_sess_log;
+
+ /* default error reporting function, may be changed by analysers */
+ s->srv_error = default_srv_error;
+
+ s->logs.accept_date = date; /* user-visible date for logging */
+ s->logs.tv_accept = now; /* corrected date for internal use */
+ tv_zero(&s->logs.tv_request);
+ s->logs.t_queue = -1;
+ s->logs.t_connect = -1;
+ s->logs.t_data = -1;
+ s->logs.t_close = 0;
+ s->logs.bytes_in = s->logs.bytes_out = 0;
+ s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
+ s->logs.srv_queue_size = 0; /* we will get this number soon */
+
+ s->data_source = DATA_SRC_NONE;
+
+ s->uniq_id = totalconn;
+ proxy_inc_fe_ctr(l, p); /* note: cum_beconn will be increased once assigned */
+
+ txn = &s->txn;
+ /* Those variables will be checked and freed if non-NULL in
+ * session.c:session_free(). It is important that they are
+ * properly initialized.
+ */
+ txn->sessid = NULL;
+ txn->srv_cookie = NULL;
+ txn->cli_cookie = NULL;
+ txn->uri = NULL;
+ txn->req.cap = NULL;
+ txn->rsp.cap = NULL;
+ txn->hdr_idx.v = NULL;
+ txn->hdr_idx.size = txn->hdr_idx.used = 0;
+
+ if (p->mode == PR_MODE_HTTP) {
+ /* the captures are only used in HTTP frontends */
+ if (p->nb_req_cap > 0 &&
+ (txn->req.cap = pool_alloc2(p->req_cap_pool)) == NULL)
+ goto out_fail_reqcap; /* no memory */
+
+ if (p->nb_rsp_cap > 0 &&
+ (txn->rsp.cap = pool_alloc2(p->rsp_cap_pool)) == NULL)
+ goto out_fail_rspcap; /* no memory */
+ }
- /* if this session comes from a known monitoring system, we want to ignore
- * it as soon as possible, which means closing it immediately for TCP.
+ if (p->acl_requires & ACL_USE_L7_ANY) {
+ /* we have to allocate header indexes only if we know
+ * that we may make use of them. This of course includes
+ * (mode == PR_MODE_HTTP).
*/
- if (addr.ss_family == AF_INET &&
- p->mon_mask.s_addr &&
- (((struct sockaddr_in *)&addr)->sin_addr.s_addr & p->mon_mask.s_addr) == p->mon_net.s_addr) {
- if (p->mode == PR_MODE_TCP) {
- close(cfd);
- pool_free2(pool2_session, s);
- continue;
- }
- s->flags |= SN_MONITOR;
- }
+ txn->hdr_idx.size = MAX_HTTP_HDR;
- if ((t = task_new()) == NULL) { /* disable this proxy for a while */
- Alert("out of memory in event_accept().\n");
- EV_FD_CLR(fd, DIR_RD);
- p->state = PR_STIDLE;
- goto out_free_session;
- }
+ if ((txn->hdr_idx.v = pool_alloc2(p->hdr_idx_pool)) == NULL)
+ goto out_fail_idx; /* no memory */
- s->cli_addr = addr;
- if (cfd >= global.maxsock) {
- Alert("accept(): not enough free sockets. Raise -n argument. Giving up.\n");
- goto out_free_task;
- }
-
- if ((fcntl(cfd, F_SETFL, O_NONBLOCK) == -1) ||
- (setsockopt(cfd, IPPROTO_TCP, TCP_NODELAY,
- (char *) &one, sizeof(one)) == -1)) {
- Alert("accept(): cannot set the socket in non blocking mode. Giving up\n");
- goto out_free_task;
- }
-
- if (p->options & PR_O_TCP_CLI_KA)
- setsockopt(cfd, SOL_SOCKET, SO_KEEPALIVE, (char *) &one, sizeof(one));
-
- if (p->options & PR_O_TCP_NOLING)
- setsockopt(cfd, SOL_SOCKET, SO_LINGER, (struct linger *) &nolinger, sizeof(struct linger));
-
- if (global.tune.client_sndbuf)
- setsockopt(cfd, SOL_SOCKET, SO_SNDBUF, &global.tune.client_sndbuf, sizeof(global.tune.client_sndbuf));
-
- if (global.tune.client_rcvbuf)
- setsockopt(cfd, SOL_SOCKET, SO_RCVBUF, &global.tune.client_rcvbuf, sizeof(global.tune.client_rcvbuf));
-
- t->process = l->handler;
- t->context = s;
- t->nice = l->nice;
-
- s->task = t;
- s->listener = l;
-
- /* Note: initially, the session's backend points to the frontend.
- * This changes later when switching rules are executed or
- * when the default backend is assigned.
- */
- s->be = s->fe = p;
-
- s->req = s->rep = NULL; /* will be allocated later */
-
- s->si[0].state = s->si[0].prev_state = SI_ST_EST;
- s->si[0].err_type = SI_ET_NONE;
- s->si[0].err_loc = NULL;
- s->si[0].owner = t;
- s->si[0].update = stream_sock_data_finish;
- s->si[0].shutr = stream_sock_shutr;
- s->si[0].shutw = stream_sock_shutw;
- s->si[0].chk_rcv = stream_sock_chk_rcv;
- s->si[0].chk_snd = stream_sock_chk_snd;
- s->si[0].connect = NULL;
- s->si[0].iohandler = NULL;
- s->si[0].fd = cfd;
- s->si[0].flags = SI_FL_NONE | SI_FL_CAP_SPLTCP; /* TCP splicing capable */
- if (s->fe->options2 & PR_O2_INDEPSTR)
- s->si[0].flags |= SI_FL_INDEP_STR;
- s->si[0].exp = TICK_ETERNITY;
-
- s->si[1].state = s->si[1].prev_state = SI_ST_INI;
- s->si[1].err_type = SI_ET_NONE;
- s->si[1].err_loc = NULL;
- s->si[1].owner = t;
- s->si[1].update = stream_sock_data_finish;
- s->si[1].shutr = stream_sock_shutr;
- s->si[1].shutw = stream_sock_shutw;
- s->si[1].chk_rcv = stream_sock_chk_rcv;
- s->si[1].chk_snd = stream_sock_chk_snd;
- s->si[1].connect = tcpv4_connect_server;
- s->si[1].iohandler = NULL;
- s->si[1].exp = TICK_ETERNITY;
- s->si[1].fd = -1; /* just to help with debugging */
- s->si[1].flags = SI_FL_NONE;
- if (s->be->options2 & PR_O2_INDEPSTR)
- s->si[1].flags |= SI_FL_INDEP_STR;
-
- s->srv = s->prev_srv = s->srv_conn = NULL;
- s->pend_pos = NULL;
- s->conn_retries = s->be->conn_retries;
-
- /* init store persistence */
- s->store_count = 0;
-
- /* FIXME: the logs are horribly complicated now, because they are
- * defined in <p>, <p>, and later <be> and <be>.
- */
+ /* and now initialize the HTTP transaction state */
+ http_init_txn(s);
+ }
- if (s->flags & SN_MONITOR)
- s->logs.logwait = 0;
- else
- s->logs.logwait = p->to_log;
-
- if (s->logs.logwait & LW_REQ)
- s->do_log = http_sess_log;
- else
- s->do_log = tcp_sess_log;
-
- /* default error reporting function, may be changed by analysers */
- s->srv_error = default_srv_error;
-
- s->logs.accept_date = date; /* user-visible date for logging */
- s->logs.tv_accept = now; /* corrected date for internal use */
- tv_zero(&s->logs.tv_request);
- s->logs.t_queue = -1;
- s->logs.t_connect = -1;
- s->logs.t_data = -1;
- s->logs.t_close = 0;
- s->logs.bytes_in = s->logs.bytes_out = 0;
- s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
- s->logs.srv_queue_size = 0; /* we will get this number soon */
-
- s->data_source = DATA_SRC_NONE;
-
- s->uniq_id = totalconn;
- totalconn++;
- proxy_inc_fe_ctr(l, p); /* note: cum_beconn will be increased once assigned */
-
- txn = &s->txn;
- /* Those variables will be checked and freed if non-NULL in
- * session.c:session_free(). It is important that they are
- * properly initialized.
- */
- txn->sessid = NULL;
- txn->srv_cookie = NULL;
- txn->cli_cookie = NULL;
- txn->uri = NULL;
- txn->req.cap = NULL;
- txn->rsp.cap = NULL;
- txn->hdr_idx.v = NULL;
- txn->hdr_idx.size = txn->hdr_idx.used = 0;
-
- if (p->mode == PR_MODE_HTTP) {
- /* the captures are only used in HTTP frontends */
- if (p->nb_req_cap > 0 &&
- (txn->req.cap = pool_alloc2(p->req_cap_pool)) == NULL)
- goto out_fail_reqcap; /* no memory */
-
- if (p->nb_rsp_cap > 0 &&
- (txn->rsp.cap = pool_alloc2(p->rsp_cap_pool)) == NULL)
- goto out_fail_rspcap; /* no memory */
+ if ((p->mode == PR_MODE_TCP || p->mode == PR_MODE_HTTP)
+ && (p->logfac1 >= 0 || p->logfac2 >= 0)) {
+ if (p->to_log) {
+ /* we have the client ip */
+ if (s->logs.logwait & LW_CLIP)
+ if (!(s->logs.logwait &= ~LW_CLIP))
+ s->do_log(s);
}
+ else if (s->cli_addr.ss_family == AF_INET) {
+ char pn[INET_ADDRSTRLEN], sn[INET_ADDRSTRLEN];
- if (p->acl_requires & ACL_USE_L7_ANY) {
- /* we have to allocate header indexes only if we know
- * that we may make use of them. This of course includes
- * (mode == PR_MODE_HTTP).
- */
- txn->hdr_idx.size = MAX_HTTP_HDR;
-
- if ((txn->hdr_idx.v = pool_alloc2(p->hdr_idx_pool)) == NULL)
- goto out_fail_idx; /* no memory */
-
- /* and now initialize the HTTP transaction state */
- http_init_txn(s);
- }
+ if (!(s->flags & SN_FRT_ADDR_SET))
+ get_frt_addr(s);
- if ((p->mode == PR_MODE_TCP || p->mode == PR_MODE_HTTP)
- && (p->logfac1 >= 0 || p->logfac2 >= 0)) {
- if (p->to_log) {
- /* we have the client ip */
- if (s->logs.logwait & LW_CLIP)
- if (!(s->logs.logwait &= ~LW_CLIP))
- s->do_log(s);
- }
- else if (s->cli_addr.ss_family == AF_INET) {
- char pn[INET_ADDRSTRLEN], sn[INET_ADDRSTRLEN];
-
- if (!(s->flags & SN_FRT_ADDR_SET))
- get_frt_addr(s);
-
- if (inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr,
- sn, sizeof(sn)) &&
- inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
- pn, sizeof(pn))) {
- send_log(p, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
- pn, ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port),
- sn, ntohs(((struct sockaddr_in *)&s->frt_addr)->sin_port),
- p->id, (p->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
- }
- }
- else {
- char pn[INET6_ADDRSTRLEN], sn[INET6_ADDRSTRLEN];
-
- if (!(s->flags & SN_FRT_ADDR_SET))
- get_frt_addr(s);
-
- if (inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)&s->frt_addr)->sin6_addr,
- sn, sizeof(sn)) &&
- inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)&s->cli_addr)->sin6_addr,
- pn, sizeof(pn))) {
- send_log(p, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
- pn, ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
- sn, ntohs(((struct sockaddr_in6 *)&s->frt_addr)->sin6_port),
- p->id, (p->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
- }
+ if (inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr,
+ sn, sizeof(sn)) &&
+ inet_ntop(AF_INET, (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
+ pn, sizeof(pn))) {
+ send_log(p, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
+ pn, ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port),
+ sn, ntohs(((struct sockaddr_in *)&s->frt_addr)->sin_port),
+ p->id, (p->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
}
}
-
- if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
- int len;
+ else {
+ char pn[INET6_ADDRSTRLEN], sn[INET6_ADDRSTRLEN];
if (!(s->flags & SN_FRT_ADDR_SET))
get_frt_addr(s);
- if (s->cli_addr.ss_family == AF_INET) {
- char pn[INET_ADDRSTRLEN];
- inet_ntop(AF_INET,
- (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
- pn, sizeof(pn));
-
- len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
- s->uniq_id, p->id, (unsigned short)fd, (unsigned short)cfd,
- pn, ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port));
- }
- else {
- char pn[INET6_ADDRSTRLEN];
- inet_ntop(AF_INET6,
- (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
- pn, sizeof(pn));
-
- len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
- s->uniq_id, p->id, (unsigned short)fd, (unsigned short)cfd,
- pn, ntohs(((struct sockaddr_in6 *)(&s->cli_addr))->sin6_port));
+ if (inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)&s->frt_addr)->sin6_addr,
+ sn, sizeof(sn)) &&
+ inet_ntop(AF_INET6, (const void *)&((struct sockaddr_in6 *)&s->cli_addr)->sin6_addr,
+ pn, sizeof(pn))) {
+ send_log(p, LOG_INFO, "Connect from %s:%d to %s:%d (%s/%s)\n",
+ pn, ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
+ sn, ntohs(((struct sockaddr_in6 *)&s->frt_addr)->sin6_port),
+ p->id, (p->mode == PR_MODE_HTTP) ? "HTTP" : "TCP");
}
-
- write(1, trash, len);
}
+ }
- if ((s->req = pool_alloc2(pool2_buffer)) == NULL)
- goto out_fail_req; /* no memory */
-
- s->req->size = global.tune.bufsize;
- buffer_init(s->req);
- s->req->prod = &s->si[0];
- s->req->cons = &s->si[1];
- s->si[0].ib = s->si[1].ob = s->req;
-
- s->req->flags |= BF_READ_ATTACHED; /* the producer is already connected */
-
- if (p->mode == PR_MODE_HTTP)
- s->req->flags |= BF_READ_DONTWAIT; /* one read is usually enough */
+ if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
+ int len;
- /* activate default analysers enabled for this listener */
- s->req->analysers = l->analysers;
+ if (!(s->flags & SN_FRT_ADDR_SET))
+ get_frt_addr(s);
- /* note: this should not happen anymore since there's always at least the switching rules */
- if (!s->req->analysers) {
- buffer_auto_connect(s->req); /* don't wait to establish connection */
- buffer_auto_close(s->req); /* let the producer forward close requests */
- }
+ if (s->cli_addr.ss_family == AF_INET) {
+ char pn[INET_ADDRSTRLEN];
+ inet_ntop(AF_INET,
+ (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
+ pn, sizeof(pn));
- s->req->rto = s->fe->timeout.client;
- s->req->wto = s->be->timeout.server;
- s->req->cto = s->be->timeout.connect;
-
- if ((s->rep = pool_alloc2(pool2_buffer)) == NULL)
- goto out_fail_rep; /* no memory */
-
- s->rep->size = global.tune.bufsize;
- buffer_init(s->rep);
- s->rep->prod = &s->si[1];
- s->rep->cons = &s->si[0];
- s->si[0].ob = s->si[1].ib = s->rep;
- s->rep->analysers = 0;
-
- s->rep->rto = s->be->timeout.server;
- s->rep->wto = s->fe->timeout.client;
- s->rep->cto = TICK_ETERNITY;
-
- s->req->rex = TICK_ETERNITY;
- s->req->wex = TICK_ETERNITY;
- s->req->analyse_exp = TICK_ETERNITY;
- s->rep->rex = TICK_ETERNITY;
- s->rep->wex = TICK_ETERNITY;
- s->rep->analyse_exp = TICK_ETERNITY;
- t->expire = TICK_ETERNITY;
-
- fd_insert(cfd);
- fdtab[cfd].owner = &s->si[0];
- fdtab[cfd].state = FD_STREADY;
- fdtab[cfd].flags = FD_FL_TCP | FD_FL_TCP_NODELAY;
- if (p->options & PR_O_TCP_NOLING)
- fdtab[cfd].flags |= FD_FL_TCP_NOLING;
-
- fdtab[cfd].cb[DIR_RD].f = l->proto->read;
- fdtab[cfd].cb[DIR_RD].b = s->req;
- fdtab[cfd].cb[DIR_WR].f = l->proto->write;
- fdtab[cfd].cb[DIR_WR].b = s->rep;
- fdinfo[cfd].peeraddr = (struct sockaddr *)&s->cli_addr;
- fdinfo[cfd].peerlen = sizeof(s->cli_addr);
-
- if ((p->mode == PR_MODE_HTTP && (s->flags & SN_MONITOR)) ||
- (p->mode == PR_MODE_HEALTH && (p->options & PR_O_HTTP_CHK))) {
- /* Either we got a request from a monitoring system on an HTTP instance,
- * or we're in health check mode with the 'httpchk' option enabled. In
- * both cases, we return a fake "HTTP/1.0 200 OK" response and we exit.
- */
- struct chunk msg;
- chunk_initstr(&msg, "HTTP/1.0 200 OK\r\n\r\n");
- stream_int_retnclose(&s->si[0], &msg); /* forge a 200 response */
- s->req->analysers = 0;
- t->expire = s->rep->wex;
- }
- else if (p->mode == PR_MODE_HEALTH) { /* health check mode, no client reading */
- struct chunk msg;
- chunk_initstr(&msg, "OK\n");
- stream_int_retnclose(&s->si[0], &msg); /* forge an "OK" response */
- s->req->analysers = 0;
- t->expire = s->rep->wex;
+ len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
+ s->uniq_id, p->id, (unsigned short)l->fd, (unsigned short)cfd,
+ pn, ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port));
}
else {
- EV_FD_SET(cfd, DIR_RD);
+ char pn[INET6_ADDRSTRLEN];
+ inet_ntop(AF_INET6,
+ (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
+ pn, sizeof(pn));
+
+ len = sprintf(trash, "%08x:%s.accept(%04x)=%04x from [%s:%d]\n",
+ s->uniq_id, p->id, (unsigned short)l->fd, (unsigned short)cfd,
+ pn, ntohs(((struct sockaddr_in6 *)(&s->cli_addr))->sin6_port));
}
- /* it is important not to call the wakeup function directly but to
- * pass through task_wakeup(), because this one knows how to apply
- * priorities to tasks.
- */
- task_wakeup(t, TASK_WOKEN_INIT);
+ write(1, trash, len);
+ }
- l->nbconn++; /* warning! right now, it's up to the handler to decrease this */
- if (l->nbconn >= l->maxconn) {
- EV_FD_CLR(l->fd, DIR_RD);
- l->state = LI_FULL;
- }
+ if ((s->req = pool_alloc2(pool2_buffer)) == NULL)
+ goto out_fail_req; /* no memory */
- p->feconn++; /* beconn will be increased later */
- if (p->feconn > p->counters.feconn_max)
- p->counters.feconn_max = p->feconn;
+ s->req->size = global.tune.bufsize;
+ buffer_init(s->req);
+ s->req->prod = &s->si[0];
+ s->req->cons = &s->si[1];
+ s->si[0].ib = s->si[1].ob = s->req;
- if (l->counters) {
- if (l->nbconn > l->counters->conn_max)
- l->counters->conn_max = l->nbconn;
- }
+ s->req->flags |= BF_READ_ATTACHED; /* the producer is already connected */
+
+ if (p->mode == PR_MODE_HTTP)
+ s->req->flags |= BF_READ_DONTWAIT; /* one read is usually enough */
- actconn++;
+ /* activate default analysers enabled for this listener */
+ s->req->analysers = l->analysers;
+
+ /* note: this should not happen anymore since there's always at least the switching rules */
+ if (!s->req->analysers) {
+ buffer_auto_connect(s->req); /* don't wait to establish connection */
+ buffer_auto_close(s->req); /* let the producer forward close requests */
+ }
- // fprintf(stderr, "accepting from %p => %d conn, %d total, task=%p\n", p, actconn, totalconn, t);
- } /* end of while (p->feconn < p->maxconn) */
- return 0;
+ s->req->rto = s->fe->timeout.client;
+ s->req->wto = s->be->timeout.server;
+ s->req->cto = s->be->timeout.connect;
+
+ if ((s->rep = pool_alloc2(pool2_buffer)) == NULL)
+ goto out_fail_rep; /* no memory */
+
+ s->rep->size = global.tune.bufsize;
+ buffer_init(s->rep);
+ s->rep->prod = &s->si[1];
+ s->rep->cons = &s->si[0];
+ s->si[0].ob = s->si[1].ib = s->rep;
+ s->rep->analysers = 0;
+
+ s->rep->rto = s->be->timeout.server;
+ s->rep->wto = s->fe->timeout.client;
+ s->rep->cto = TICK_ETERNITY;
+
+ s->req->rex = TICK_ETERNITY;
+ s->req->wex = TICK_ETERNITY;
+ s->req->analyse_exp = TICK_ETERNITY;
+ s->rep->rex = TICK_ETERNITY;
+ s->rep->wex = TICK_ETERNITY;
+ s->rep->analyse_exp = TICK_ETERNITY;
+ t->expire = TICK_ETERNITY;
+
+ fd_insert(cfd);
+ fdtab[cfd].owner = &s->si[0];
+ fdtab[cfd].state = FD_STREADY;
+ fdtab[cfd].flags = FD_FL_TCP | FD_FL_TCP_NODELAY;
+ if (p->options & PR_O_TCP_NOLING)
+ fdtab[cfd].flags |= FD_FL_TCP_NOLING;
+
+ fdtab[cfd].cb[DIR_RD].f = l->proto->read;
+ fdtab[cfd].cb[DIR_RD].b = s->req;
+ fdtab[cfd].cb[DIR_WR].f = l->proto->write;
+ fdtab[cfd].cb[DIR_WR].b = s->rep;
+ fdinfo[cfd].peeraddr = (struct sockaddr *)&s->cli_addr;
+ fdinfo[cfd].peerlen = sizeof(s->cli_addr);
+
+ if ((p->mode == PR_MODE_HTTP && (s->flags & SN_MONITOR)) ||
+ (p->mode == PR_MODE_HEALTH && (p->options & PR_O_HTTP_CHK))) {
+ /* Either we got a request from a monitoring system on an HTTP instance,
+ * or we're in health check mode with the 'httpchk' option enabled. In
+ * both cases, we return a fake "HTTP/1.0 200 OK" response and we exit.
+ */
+ struct chunk msg;
+ chunk_initstr(&msg, "HTTP/1.0 200 OK\r\n\r\n");
+ stream_int_retnclose(&s->si[0], &msg); /* forge a 200 response */
+ s->req->analysers = 0;
+ t->expire = s->rep->wex;
+ }
+ else if (p->mode == PR_MODE_HEALTH) { /* health check mode, no client reading */
+ struct chunk msg;
+ chunk_initstr(&msg, "OK\n");
+ stream_int_retnclose(&s->si[0], &msg); /* forge an "OK" response */
+ s->req->analysers = 0;
+ t->expire = s->rep->wex;
+ }
+ else {
+ EV_FD_SET(cfd, DIR_RD);
+ }
+
+ /* it is important not to call the wakeup function directly but to
+ * pass through task_wakeup(), because this one knows how to apply
+ * priorities to tasks.
+ */
+ task_wakeup(t, TASK_WOKEN_INIT);
+
+ return 1;
/* Error unrolling */
out_fail_rep:
LIST_DEL(&s->list);
pool_free2(pool2_session, s);
out_close:
- close(cfd);
- return 0;
+ return -1;
}
/* set test->i to the id of the frontend */
.sock_family = AF_INET,
.sock_addrlen = sizeof(struct sockaddr_in),
.l3_addrlen = 32/8,
+ .accept = &stream_sock_accept,
.read = &stream_sock_read,
.write = &stream_sock_write,
.bind_all = tcp_bind_listeners,
.sock_family = AF_INET6,
.sock_addrlen = sizeof(struct sockaddr_in6),
.l3_addrlen = 128/8,
+ .accept = &stream_sock_accept,
.read = &stream_sock_read,
.write = &stream_sock_write,
.bind_all = tcp_bind_listeners,
listener->fd = fd;
listener->state = LI_LISTEN;
- /* the function for the accept() event */
- fd_insert(fd);
- fdtab[fd].cb[DIR_RD].f = listener->accept;
- fdtab[fd].cb[DIR_WR].f = NULL; /* never called */
- fdtab[fd].cb[DIR_RD].b = fdtab[fd].cb[DIR_WR].b = NULL;
fdtab[fd].owner = listener; /* reference the listener instead of a task */
fdtab[fd].state = FD_STLISTEN;
- fdtab[fd].flags = FD_FL_TCP;
- if (listener->options & LI_O_NOLINGER)
- fdtab[fd].flags |= FD_FL_TCP_NOLING;
+ fdtab[fd].flags = FD_FL_TCP | ((listener->options & LI_O_NOLINGER) ? FD_FL_TCP_NOLING : 0);
+ fdtab[fd].cb[DIR_RD].f = listener->proto->accept;
+ fdtab[fd].cb[DIR_WR].f = NULL; /* never called */
+ fdtab[fd].cb[DIR_RD].b = fdtab[fd].cb[DIR_WR].b = NULL;
fdinfo[fd].peeraddr = NULL;
fdinfo[fd].peerlen = 0;
+ fd_insert(fd);
+
tcp_return:
if (msg && errlen)
strlcpy2(errmsg, msg, errlen);
/*
* UNIX SOCK_STREAM protocol layer (uxst)
*
- * Copyright 2000-2009 Willy Tarreau <w@1wt.eu>
+ * Copyright 2000-2010 Willy Tarreau <w@1wt.eu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include <common/config.h>
#include <common/debug.h>
#include <common/errors.h>
-#include <common/memory.h>
#include <common/mini-clist.h>
#include <common/standard.h>
-#include <common/ticks.h>
#include <common/time.h>
#include <common/version.h>
#include <types/global.h>
-#include <proto/acl.h>
-#include <proto/backend.h>
-#include <proto/buffers.h>
-#include <proto/dumpstats.h>
#include <proto/fd.h>
#include <proto/log.h>
#include <proto/protocols.h>
#include <proto/proto_uxst.h>
-#include <proto/queue.h>
-#include <proto/session.h>
-#include <proto/stream_interface.h>
#include <proto/stream_sock.h>
#include <proto/task.h>
.sock_family = AF_UNIX,
.sock_addrlen = sizeof(struct sockaddr_un),
.l3_addrlen = sizeof(((struct sockaddr_un*)0)->sun_path),/* path len */
+ .accept = &stream_sock_accept,
.read = &stream_sock_read,
.write = &stream_sock_write,
.bind_all = uxst_bind_listeners,
/* the function for the accept() event */
fd_insert(fd);
- fdtab[fd].cb[DIR_RD].f = listener->accept;
+ fdtab[fd].cb[DIR_RD].f = listener->proto->accept;
fdtab[fd].cb[DIR_WR].f = NULL; /* never called */
fdtab[fd].cb[DIR_RD].b = fdtab[fd].cb[DIR_WR].b = NULL;
fdtab[fd].owner = listener; /* reference the listener instead of a task */
* 4) high-level functions
********************************/
-
-/*
- * This function is called on a read event from a listen socket, corresponding
- * to an accept. It tries to accept as many connections as possible.
- * It returns 0. Since we use UNIX sockets on the local system for monitoring
- * purposes and other related things, we do not need to output as many messages
- * as with TCP which can fall under attack.
- */
-int uxst_event_accept(int fd) {
- struct listener *l = fdtab[fd].owner;
- struct session *s;
- struct task *t;
- int cfd;
- int max_accept;
-
- if (global.nbproc > 1)
- max_accept = 8; /* let other processes catch some connections too */
- else
- max_accept = -1;
-
- while (max_accept--) {
- struct sockaddr_storage addr;
- socklen_t laddr = sizeof(addr);
-
- if ((cfd = accept(fd, (struct sockaddr *)&addr, &laddr)) == -1) {
- switch (errno) {
- case EAGAIN:
- case EINTR:
- case ECONNABORTED:
- return 0; /* nothing more to accept */
- case ENFILE:
- /* Process reached system FD limit. Check system tunables. */
- return 0;
- case EMFILE:
- /* Process reached process FD limit. Check 'ulimit-n'. */
- return 0;
- case ENOBUFS:
- case ENOMEM:
- /* Process reached system memory limit. Check system tunables. */
- return 0;
- default:
- return 0;
- }
- }
-
- if (l->nbconn >= l->maxconn || actconn >= global.maxconn) {
- /* too many connections, we shoot this one and return.
- * FIXME: it would be better to simply switch the listener's
- * state to LI_FULL and disable the FD. We could re-enable
- * it upon fd_delete(), but this requires all protocols to
- * be switched.
- */
- goto out_close;
- }
-
- if ((s = pool_alloc2(pool2_session)) == NULL) {
- Alert("out of memory in uxst_event_accept().\n");
- goto out_close;
- }
-
- LIST_ADDQ(&sessions, &s->list);
- LIST_INIT(&s->back_refs);
-
- s->flags = 0;
- s->term_trace = 0;
-
- if ((t = task_new()) == NULL) {
- Alert("out of memory in uxst_event_accept().\n");
- goto out_free_session;
- }
-
- s->cli_addr = addr;
-
- /* FIXME: should be checked earlier */
- if (cfd >= global.maxsock) {
- Alert("accept(): not enough free sockets. Raise -n argument. Giving up.\n");
- goto out_free_task;
- }
-
- if (fcntl(cfd, F_SETFL, O_NONBLOCK) == -1) {
- Alert("accept(): cannot set the socket in non blocking mode. Giving up.\n");
- goto out_free_task;
- }
-
- t->process = l->handler;
- t->context = s;
- t->nice = l->nice;
-
- s->task = t;
- s->listener = l;
- s->fe = s->be = l->private;
-
- s->req = s->rep = NULL; /* will be allocated later */
-
- s->si[0].state = s->si[0].prev_state = SI_ST_EST;
- s->si[0].err_type = SI_ET_NONE;
- s->si[0].err_loc = NULL;
- s->si[0].owner = t;
- s->si[0].update = stream_sock_data_finish;
- s->si[0].shutr = stream_sock_shutr;
- s->si[0].shutw = stream_sock_shutw;
- s->si[0].chk_rcv = stream_sock_chk_rcv;
- s->si[0].chk_snd = stream_sock_chk_snd;
- s->si[0].connect = NULL;
- s->si[0].iohandler = NULL;
- s->si[0].fd = cfd;
- s->si[0].flags = SI_FL_NONE;
- if (s->fe->options2 & PR_O2_INDEPSTR)
- s->si[0].flags |= SI_FL_INDEP_STR;
- s->si[0].exp = TICK_ETERNITY;
-
- s->si[1].state = s->si[1].prev_state = SI_ST_INI;
- s->si[1].err_type = SI_ET_NONE;
- s->si[1].err_loc = NULL;
- s->si[1].owner = t;
- s->si[1].exp = TICK_ETERNITY;
- s->si[1].fd = -1; /* just to help with debugging */
- s->si[1].flags = SI_FL_NONE;
- if (s->be->options2 & PR_O2_INDEPSTR)
- s->si[1].flags |= SI_FL_INDEP_STR;
-
- stream_int_register_handler(&s->si[1], stats_io_handler);
- s->si[1].private = s;
- s->si[1].st1 = 0;
- s->si[1].st0 = STAT_CLI_INIT;
-
- s->srv = s->prev_srv = s->srv_conn = NULL;
- s->pend_pos = NULL;
-
- s->store_count = 0;
-
- memset(&s->logs, 0, sizeof(s->logs));
- memset(&s->txn, 0, sizeof(s->txn));
-
- s->logs.accept_date = date; /* user-visible date for logging */
- s->logs.tv_accept = now; /* corrected date for internal use */
-
- s->data_state = DATA_ST_INIT;
- s->data_source = DATA_SRC_NONE;
- s->uniq_id = totalconn;
- totalconn++;
-
- if ((s->req = pool_alloc2(pool2_buffer)) == NULL)
- goto out_free_task;
-
- s->req->size = global.tune.bufsize;
- buffer_init(s->req);
- s->req->prod = &s->si[0];
- s->req->cons = &s->si[1];
- s->si[0].ib = s->si[1].ob = s->req;
- s->req->flags |= BF_READ_ATTACHED; /* the producer is already connected */
- s->req->flags |= BF_READ_DONTWAIT; /* we plan to read small requests */
-
- s->req->analysers = l->analysers;
-
- s->req->wto = TICK_ETERNITY;
- s->req->cto = TICK_ETERNITY;
- s->req->rto = TICK_ETERNITY;
-
- if ((s->rep = pool_alloc2(pool2_buffer)) == NULL)
- goto out_free_req;
-
- s->rep->size = global.tune.bufsize;
- buffer_init(s->rep);
-
- s->rep->prod = &s->si[1];
- s->rep->cons = &s->si[0];
- s->si[0].ob = s->si[1].ib = s->rep;
- s->rep->analysers = 0;
-
- s->rep->rto = TICK_ETERNITY;
- s->rep->cto = TICK_ETERNITY;
- s->rep->wto = TICK_ETERNITY;
-
- s->req->rex = TICK_ETERNITY;
- s->req->wex = TICK_ETERNITY;
- s->req->analyse_exp = TICK_ETERNITY;
- s->rep->rex = TICK_ETERNITY;
- s->rep->wex = TICK_ETERNITY;
- s->rep->analyse_exp = TICK_ETERNITY;
-
- t->expire = TICK_ETERNITY;
-
- if (l->timeout) {
- s->req->rto = *l->timeout;
- s->rep->wto = *l->timeout;
- }
-
- fd_insert(cfd);
- fdtab[cfd].owner = &s->si[0];
- fdtab[cfd].state = FD_STREADY;
- fdtab[cfd].cb[DIR_RD].f = l->proto->read;
- fdtab[cfd].cb[DIR_RD].b = s->req;
- fdtab[cfd].cb[DIR_WR].f = l->proto->write;
- fdtab[cfd].cb[DIR_WR].b = s->rep;
- fdinfo[cfd].peeraddr = (struct sockaddr *)&s->cli_addr;
- fdinfo[cfd].peerlen = sizeof(s->cli_addr);
-
- EV_FD_SET(cfd, DIR_RD);
-
- task_wakeup(t, TASK_WOKEN_INIT);
-
- l->nbconn++; /* warning! right now, it's up to the handler to decrease this */
- if (l->nbconn >= l->maxconn) {
- EV_FD_CLR(l->fd, DIR_RD);
- l->state = LI_FULL;
- }
- actconn++;
- }
- return 0;
-
- out_free_req:
- pool_free2(pool2_buffer, s->req);
- out_free_task:
- task_free(t);
- out_free_session:
- LIST_DEL(&s->list);
- pool_free2(pool2_session, s);
- out_close:
- close(cfd);
- return 0;
-}
-
__attribute__((constructor))
static void __uxst_protocol_init(void)
{
#include <proto/buffers.h>
#include <proto/fd.h>
+#include <proto/freq_ctr.h>
+#include <proto/log.h>
#include <proto/pipe.h>
#include <proto/stream_sock.h>
#include <proto/task.h>
}
}
+/* This function is called on a read event from a listening socket, corresponding
+ * to an accept. It tries to accept as many connections as possible, and for each
+ * calls the listener's accept handler (generally the frontend's accept handler).
+ */
+int stream_sock_accept(int fd)
+{
+ struct listener *l = fdtab[fd].owner;
+ struct proxy *p = l->frontend;
+ int max_accept = global.tune.maxaccept;
+ int cfd;
+ int ret;
+
+ if (unlikely(l->nbconn >= l->maxconn)) {
+ EV_FD_CLR(l->fd, DIR_RD);
+ l->state = LI_FULL;
+ return 0;
+ }
+
+ if (p && p->fe_sps_lim) {
+ int max = freq_ctr_remain(&p->fe_sess_per_sec, p->fe_sps_lim, 0);
+ if (max_accept > max)
+ max_accept = max;
+ }
+
+ while ((!p || p->feconn < p->maxconn) && actconn < global.maxconn && max_accept--) {
+ struct sockaddr_storage addr;
+ socklen_t laddr = sizeof(addr);
+
+ cfd = accept(fd, (struct sockaddr *)&addr, &laddr);
+ if (unlikely(cfd == -1)) {
+ switch (errno) {
+ case EAGAIN:
+ case EINTR:
+ case ECONNABORTED:
+ return 0; /* nothing more to accept */
+ case ENFILE:
+ send_log(p, LOG_EMERG,
+ "Proxy %s reached system FD limit at %d. Please check system tunables.\n",
+ p->id, maxfd);
+ return 0;
+ case EMFILE:
+ send_log(p, LOG_EMERG,
+ "Proxy %s reached process FD limit at %d. Please check 'ulimit-n' and restart.\n",
+ p->id, maxfd);
+ return 0;
+ case ENOBUFS:
+ case ENOMEM:
+ send_log(p, LOG_EMERG,
+ "Proxy %s reached system memory limit at %d sockets. Please check system tunables.\n",
+ p->id, maxfd);
+ return 0;
+ default:
+ return 0;
+ }
+ }
+
+ if (unlikely(cfd >= global.maxsock)) {
+ Alert("accept(): not enough free sockets. Raise -n argument. Giving up.\n");
+ goto out_close;
+ }
+
+ ret = l->accept(l, cfd, &addr);
+ if (unlikely(ret < 0)) {
+ /* critical error encountered, generally a resource shortage */
+ EV_FD_CLR(fd, DIR_RD);
+ p->state = PR_STIDLE;
+ goto out_close;
+ }
+ else if (unlikely(ret == 0)) {
+ /* ignore this connection */
+ close(cfd);
+ continue;
+ }
+
+ actconn++;
+ totalconn++;
+ l->nbconn++; /* warning! right now, it's up to the handler to decrease this */
+ if (l->nbconn >= l->maxconn) {
+ EV_FD_CLR(l->fd, DIR_RD);
+ l->state = LI_FULL;
+ }
+
+ if (p) {
+ p->feconn++; /* beconn will be increased later */
+ if (p->feconn > p->counters.feconn_max)
+ p->counters.feconn_max = p->feconn;
+ }
+
+ if (l->counters) {
+ if (l->nbconn > l->counters->conn_max)
+ l->counters->conn_max = l->nbconn;
+ }
+ } /* end of while (p->feconn < p->maxconn) */
+ return 0;
+
+ /* Error unrolling */
+ out_close:
+ close(cfd);
+ return 0;
+}
+
/*
* Local variables:
projects / thirdparty / haproxy.git / commitdiff
