nginx-0.0.1-2003-02-06-20:21:13 import
diff --git a/src/event/modules/ngx_devpoll_module.c b/src/event/modules/ngx_devpoll_module.c
index 13971ad..e2e7750 100644
--- a/src/event/modules/ngx_devpoll_module.c
+++ b/src/event/modules/ngx_devpoll_module.c
@@ -16,6 +16,7 @@
 #error "/dev/poll is not supported on this platform"
 #endif
 
+static int ngx_devpoll_set_event(ngx_event_t *ev, int event, u_int flags);
 
 /* STUB */
 #define DEVPOLL_NCHANGES  512
@@ -137,7 +138,7 @@
 }
 
 
-int ngx_devpoll_set_event(ngx_event_t *ev, int event, u_int flags)
+static int ngx_devpoll_set_event(ngx_event_t *ev, int event, u_int flags)
 {
     int  n;
     ngx_connection_t  *c;
@@ -192,7 +193,6 @@
     int                events, n, i;
     ngx_msec_t         timer, delta;
     ngx_err_t          err;
-    ngx_event_t       *ev;
     ngx_connection_t  *c;
     struct dvpoll      dvp;
     struct timeval     tv;
@@ -233,7 +233,7 @@
 
     nchanges = 0;
 
-    if (timer != INFTIM) {
+    if ((int) timer != INFTIM) {
         gettimeofday(&tv, NULL);
         delta = tv.tv_sec * 1000 + tv.tv_usec / 1000 - delta;
 
@@ -305,7 +305,7 @@
         }
     }
 
-    if (timer != INFTIM) {
+    if ((int) timer != INFTIM) {
         ngx_event_expire_timers(delta);
     }
 
diff --git a/src/event/modules/ngx_iocp_module.c b/src/event/modules/ngx_iocp_module.c
new file mode 100644
index 0000000..f474c4c
--- /dev/null
+++ b/src/event/modules/ngx_iocp_module.c
@@ -0,0 +1,137 @@
+
+#include <ngx_config.h>
+
+#include <ngx_core.h>
+#include <ngx_log.h>
+#include <ngx_errno.h>
+#include <ngx_time.h>
+#include <ngx_connection.h>
+#include <ngx_event.h>
+#include <ngx_event_timer.h>
+
+#include <ngx_iocp_module.h>
+
+
+int ngx_iocp_threads = 0;;
+
+
+static HANDLE        iocp;
+static ngx_event_t  *timer_queue;
+
+
+int ngx_iocp_init(int max_connections, ngx_log_t *log)
+{
+    iocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE,
+                                  NULL, 0, ngx_iocp_threads);
+
+    if (iocp == NULL) {
+        ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
+                      "CreateIoCompletionPort() failed");
+        return NGX_ERROR;
+    }
+
+    timer_queue = ngx_event_init_timer(log);
+    if (timer_queue == NULL) {
+        return NGX_ERROR;
+    }
+
+    ngx_event_actions.process = ngx_iocp_process_events;
+
+    ngx_event_flags = NGX_HAVE_AIO_EVENT|NGX_HAVE_IOCP_EVENT;
+
+    return NGX_OK;
+}
+
+
+int ngx_iocp_add_event(ngx_event_t *ev)
+{
+    ngx_connection_t  *c;
+
+    c = (ngx_connection_t *) ev->data;
+
+    ngx_log_debug(ev->log, "iocp: %d, %08x:%08x" _ c->fd _ ev _ &ev->ovlp);
+
+    if (CreateIoCompletionPort((HANDLE) c->fd, iocp, (DWORD) ev, 0) == NULL) {
+        ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno,
+                      "CreateIoCompletionPort() failed");
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+
+int ngx_iocp_process_events(ngx_log_t *log)
+{
+    int                rc;
+    size_t             bytes;
+    ngx_err_t          err;
+    ngx_msec_t         timer, delta;
+    ngx_event_t       *ev, *e;
+    ngx_event_ovlp_t  *ovlp;
+
+    ngx_log_debug(log, "iocp");
+
+    timer = ngx_event_find_timer();
+
+    if (timer) {
+        delta = ngx_msec();
+
+    } else {
+        timer = INFINITE;
+        delta = 0;
+    }
+
+    ngx_log_debug(log, "iocp timer: %d" _ timer);
+
+#if 1
+    rc = GetQueuedCompletionStatus(iocp, &bytes, (LPDWORD) &e,
+                                   (LPOVERLAPPED *) &ovlp, timer);
+    ngx_log_debug(log, "iocp: %d, %d:%08x:%08x" _ rc _ bytes _ e _ ovlp);
+    if (rc == 0) {
+#else
+    if (GetQueuedCompletionStatus(iocp, &bytes, (LPDWORD) &e,
+                                  (LPOVERLAPPED *) &ovlp, timer) == 0) {
+#endif
+        err = ngx_errno;
+
+        if (ovlp == NULL) {
+            if (err != WAIT_TIMEOUT) {
+                ngx_log_error(NGX_LOG_ALERT, log, err,
+                              "GetQueuedCompletionStatus() failed");
+
+                return NGX_ERROR;
+            }
+
+        } else {
+            ovlp->error = err;
+        }
+    }
+
+    if (timer != INFINITE) {
+        delta = ngx_msec() - delta;
+    }
+
+    if (ovlp) {
+        ev = ovlp->event;
+
+ngx_log_debug(log, "iocp ev: %08x" _ ev);
+
+        if (ev == e) {
+            ev->ready = 1;
+            ev->available = bytes;
+        }
+
+ngx_log_debug(log, "iocp ev: %08x" _ ev->event_handler);
+
+        if (ev->event_handler(ev) == NGX_ERROR) {
+            ev->close_handler(ev);
+        }
+    }
+
+    if (timer != INFINITE) {
+        ngx_event_expire_timers(delta);
+    }
+
+    return NGX_OK;
+}
diff --git a/src/event/modules/ngx_iocp_module.h b/src/event/modules/ngx_iocp_module.h
new file mode 100644
index 0000000..d7f2f51
--- /dev/null
+++ b/src/event/modules/ngx_iocp_module.h
@@ -0,0 +1,15 @@
+#ifndef _NGX_IOCP_MODULE_H_INCLUDED_
+#define _NGX_IOCP_MODULE_H_INCLUDED_
+
+
+#include <ngx_types.h>
+#include <ngx_log.h>
+#include <ngx_event.h>
+
+
+int ngx_iocp_init(int max_connections, ngx_log_t *log);
+int ngx_iocp_add_event(ngx_event_t *ev);
+int ngx_iocp_process_events(ngx_log_t *log);
+
+
+#endif /* _NGX_IOCP_MODULE_H_INCLUDED_ */
diff --git a/src/event/modules/ngx_kqueue_module.c b/src/event/modules/ngx_kqueue_module.c
index abf3b6e..da8450e 100644
--- a/src/event/modules/ngx_kqueue_module.c
+++ b/src/event/modules/ngx_kqueue_module.c
@@ -23,7 +23,11 @@
 
 
 /* should be per-thread */
+#if 1
+int              kq;
+#else
 static int              kq;
+#endif
 static struct kevent   *change_list, *event_list;
 static unsigned int     nchanges;
 static int              nevents;
@@ -63,7 +67,12 @@
     ngx_event_actions.process = ngx_kqueue_process_events;
 
     ngx_event_flags = NGX_HAVE_LEVEL_EVENT
-                      |NGX_HAVE_ONESHOT_EVENT|NGX_HAVE_CLEAR_EVENT;
+                     |NGX_HAVE_ONESHOT_EVENT
+#if (HAVE_AIO_EVENT)
+                     |NGX_HAVE_AIO_EVENT;
+#else
+                     |NGX_HAVE_CLEAR_EVENT;
+#endif
 #endif
 
     return NGX_OK;
@@ -221,10 +230,19 @@
     for (i = 0; i < events; i++) {
 
 #if (NGX_DEBUG_EVENT)
-        ngx_log_debug(log, "kevent: %d: ft:%d f:%08x ff:%08x d:%d ud:%08x" _
-                      event_list[i].ident _ event_list[i].filter _
-                      event_list[i].flags _ event_list[i].fflags _
-                      event_list[i].data _ event_list[i].udata);
+        if (event_list[i].ident > 0x8000000) {
+            ngx_log_debug(log,
+                          "kevent: %08x: ft:%d f:%08x ff:%08x d:%d ud:%08x" _
+                          event_list[i].ident _ event_list[i].filter _
+                          event_list[i].flags _ event_list[i].fflags _
+                          event_list[i].data _ event_list[i].udata);
+        } else {
+            ngx_log_debug(log,
+                          "kevent: %d: ft:%d f:%08x ff:%08x d:%d ud:%08x" _
+                          event_list[i].ident _ event_list[i].filter _
+                          event_list[i].flags _ event_list[i].fflags _
+                          event_list[i].data _ event_list[i].udata);
+        }
 #endif
 
         if (event_list[i].flags & EV_ERROR) {
@@ -243,7 +261,6 @@
 
         case EVFILT_READ:
         case EVFILT_WRITE:
-            ev->ready = 1;
             ev->available = event_list[i].data;
 
             if (event_list[i].flags & EV_EOF) {
@@ -255,12 +272,18 @@
                 ngx_del_timer(ev);
             }
 
+            /* fall through */
+
+        case EVFILT_AIO:
+            ev->ready = 1;
+
             if (ev->event_handler(ev) == NGX_ERROR) {
                 ev->close_handler(ev);
             }
 
             break;
 
+
         default:
             ngx_log_error(NGX_LOG_ALERT, log, 0,
                           "unknown kevent filter %d" _ event_list[i].filter);
diff --git a/src/event/modules/ngx_kqueue_module.h b/src/event/modules/ngx_kqueue_module.h
index c561920..568476e 100644
--- a/src/event/modules/ngx_kqueue_module.h
+++ b/src/event/modules/ngx_kqueue_module.h
@@ -14,4 +14,10 @@
 int ngx_kqueue_process_events(ngx_log_t *log);
 
 
+#if 1
+extern int              kq;
+#endif
+
+
+
 #endif /* _NGX_KQUEUE_MODULE_H_INCLUDED_ */
diff --git a/src/event/modules/ngx_poll_module.c b/src/event/modules/ngx_poll_module.c
index e27031c..939340e 100644
--- a/src/event/modules/ngx_poll_module.c
+++ b/src/event/modules/ngx_poll_module.c
@@ -13,7 +13,7 @@
 
 /* should be per-thread */
 static struct pollfd  *event_list;
-static unsigned int    nevents;
+static u_int           nevents;
 
 static ngx_event_t   **event_index;
 static ngx_event_t   **ready_index;
@@ -140,7 +140,8 @@
 
 int ngx_poll_process_events(ngx_log_t *log)
 {
-    int                i, ready, nready, found;
+    int                ready, found;
+    u_int              i, nready;
     ngx_msec_t         timer, delta;
     ngx_err_t          err;
     ngx_event_t       *ev;
@@ -172,7 +173,7 @@
 
     ngx_log_debug(log, "poll ready %d" _ ready);
 
-    if (timer != INFTIM) {
+    if ((int) timer != INFTIM) {
         delta = ngx_msec() - delta;
 
     } else {
@@ -256,7 +257,7 @@
         ngx_log_error(NGX_LOG_ALERT, log, 0, "poll ready != events");
     }
 
-    if (timer != INFTIM) {
+    if ((int) timer != INFTIM) {
         ngx_event_expire_timers(delta);
     }
 
diff --git a/src/event/modules/ngx_select_module.c b/src/event/modules/ngx_select_module.c
index fe461c3..50d030c 100644
--- a/src/event/modules/ngx_select_module.c
+++ b/src/event/modules/ngx_select_module.c
@@ -23,7 +23,7 @@
 static int            max_fd;
 #endif
 
-static int            nevents;
+static u_int          nevents;
 
 static ngx_event_t  **event_index;
 static ngx_event_t  **ready_index;
@@ -177,8 +177,8 @@
 
 int ngx_select_process_events(ngx_log_t *log)
 {
-    int                ready, found, nready;
-    u_int              i;
+    int                ready, found;
+    u_int              i, nready;
     ngx_msec_t         timer, delta;
     ngx_event_t       *ev;
     ngx_connection_t  *c;
diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index 63cf999..063385d 100644
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -12,16 +12,24 @@
 #include <ngx_event_accept.h>
 
 #include <ngx_select_module.h>
+
 #if (HAVE_POLL)
 #include <ngx_poll_module.h>
 #endif
+
 #if (HAVE_DEVPOLL)
 #include <ngx_devpoll_module.h>
 #endif
+
 #if (HAVE_KQUEUE)
 #include <ngx_kqueue_module.h>
 #endif
 
+#if (HAVE_IOCP)
+#include <ngx_event_acceptex.h>
+#include <ngx_iocp_module.h>
+#endif
+
 
 ngx_connection_t    *ngx_connections;
 ngx_event_t         *ngx_read_events, *ngx_write_events;
@@ -68,7 +76,10 @@
     ngx_devpoll_init,
 #endif
 #if (HAVE_KQUEUE)
-    ngx_kqueue_init
+    ngx_kqueue_init,
+#endif
+#if (HAVE_IOCP)
+    ngx_iocp_init
 #endif
 };
 
@@ -86,6 +97,10 @@
     /* STUB */
     int max_connections = 512;
 
+#if (HAVE_IOCP)
+    ngx_event_type = NGX_IOCP_EVENT;
+#endif
+
     if (ngx_init_events(max_connections, log) == NGX_ERROR) {
         exit(1);
     }
@@ -127,16 +142,38 @@
         ngx_memcpy(ev->log, c->log, sizeof(ngx_log_t));
         c->read = ev;
         ev->data = c;
-        ev->event_handler = &ngx_event_accept;
-        ev->listening = 1;
         ev->index = NGX_INVALID_INDEX;
+#if 0
+        ev->listening = 1;
+#endif
 
         ev->available = 0;
 
 #if (HAVE_DEFERRED_ACCEPT)
         ev->deferred_accept = s[i].deferred_accept;
 #endif
+
+#if (HAVE_IOCP)
+
+        if (ngx_event_flags & NGX_HAVE_IOCP_EVENT) {
+            ev->event_handler = &ngx_event_acceptex;
+
+            if (ngx_iocp_add_event(ev) == NGX_ERROR) {
+                return NGX_ERROR;
+            }
+
+            ngx_event_post_acceptex(&s[i], 1);
+
+        } else {
+            ev->event_handler = &ngx_event_accept;
+        }
+
+#else
+
+        ev->event_handler = &ngx_event_accept;
         ngx_add_event(ev, NGX_READ_EVENT, 0);
+
+#endif
     }
 }
 
diff --git a/src/event/ngx_event.h b/src/event/ngx_event.h
index a918810..d81be38 100644
--- a/src/event/ngx_event.h
+++ b/src/event/ngx_event.h
@@ -15,6 +15,15 @@
 
 typedef struct ngx_event_s       ngx_event_t;
 
+#if (HAVE_IOCP)
+typedef struct {
+    WSAOVERLAPPED    ovlp;
+    ngx_event_t     *event;
+    int              error;
+} ngx_event_ovlp_t;
+#endif
+
+
 struct ngx_event_s {
     void            *data;
 
@@ -45,11 +54,11 @@
                                 /* otherwise:                                */
                                 /*   accept: 1 if accept many, 0 otherwise   */
 
-    /* flags - int are probably faster on write then bits ??? */
-
     unsigned         oneshot:1;
 
+#if 0
     unsigned         listening:1;
+#endif
     unsigned         write:1;
 
     unsigned         active:1;
@@ -66,11 +75,24 @@
 #if (HAVE_DEFERRED_ACCEPT)
     unsigned         deferred_accept:1;
 #endif
+
 #if (HAVE_KQUEUE)
     unsigned         eof:1;
     int              error;
 #endif
 
+
+#if (HAVE_AIO)
+
+#if (HAVE_IOCP)
+    ngx_event_ovlp_t ovlp;
+#else
+    struct aiocb     aiocb;
+#endif
+
+#endif
+
+
 #if 0
     void            *thr_ctx;   /* event thread context if $(CC) doesn't
                                    understand __thread declaration
@@ -94,6 +116,10 @@
 #if (HAVE_KQUEUE)
     NGX_KQUEUE_EVENT,
 #endif
+#if (HAVE_IOCP)
+    NGX_IOCP_EVENT,
+#endif
+    NGX_DUMMY_EVENT    /* avoid comma at end of enumerator list */
 } ngx_event_type_e ;
 
 typedef struct {
@@ -125,6 +151,10 @@
 /* No need to add or delete event filters - overlapped, aio_read, aioread */
 #define NGX_HAVE_AIO_EVENT      16
 
+/* Need to add socket or halde only once - i/o completion port.
+   It also requires to set HAVE_AIO_EVENT and NGX_HAVE_AIO_EVENT */
+#define NGX_HAVE_IOCP_EVENT     32
+
 /* Event filter is deleted before closing file. Has no meaning
    for select, poll, epoll.
 
@@ -187,43 +217,26 @@
 #define ngx_process_events   ngx_event_actions.process
 #define ngx_add_event        ngx_event_actions.add
 #define ngx_del_event        ngx_event_actions.del
+
 #if 0
 #define ngx_add_timer        ngx_event_actions.timer
 #else
 #define ngx_add_timer        ngx_event_add_timer
 #endif
+
+#if (HAVE_IOCP_EVENT)
+#define ngx_event_recv       ngx_event_wsarecv
+#elif (HAVE_AIO_EVENT)
+#define ngx_event_recv       ngx_event_aio_read
+#else
 #define ngx_event_recv       ngx_event_recv_core
+#endif
 
 #endif
 
 #define ngx_del_timer        ngx_event_del_timer
 
 
-#if 0
-ngx_inline static void ngx_del_timer(ngx_event_t *ev)
-{
-#if (NGX_DEBUG_EVENT)
-    /* STUB - we can not cast (ngx_connection_t *) here */
-    ngx_log_debug(ev->log, "del timer: %d" _ *(int *)(ev->data));
-#endif
-
-    if (ev->timer_prev) {
-        ev->timer_prev->timer_next = ev->timer_next;
-    }
-
-    if (ev->timer_next) {
-        ev->timer_next->timer_delta += ev->timer_delta;
-        ev->timer_next->timer_prev = ev->timer_prev;
-        ev->timer_next = NULL;
-    }
-
-    if (ev->timer_prev) {
-        ev->timer_prev = NULL;
-    }
-}
-#endif
-
-
 
 extern ngx_event_t          *ngx_read_events;
 extern ngx_event_t          *ngx_write_events;
@@ -236,6 +249,10 @@
 #endif
 
 
+ssize_t ngx_event_recv_core(ngx_connection_t *c, char *buf, size_t size);
+int ngx_event_close_connection(ngx_event_t *ev);
+
+
 void ngx_pre_thread(ngx_array_t *ls, ngx_pool_t *pool, ngx_log_t *log);
 void ngx_worker(ngx_log_t *log);
 
diff --git a/src/event/ngx_event_accept.c b/src/event/ngx_event_accept.c
index 14422af..2d64c0d 100644
--- a/src/event/ngx_event_accept.c
+++ b/src/event/ngx_event_accept.c
@@ -31,7 +31,9 @@
 
     ev->ready = 0;
 
+#if 0
 /* DEBUG */ ev->available++;
+#endif
 
     do {
         ngx_test_null(pool, ngx_create_pool(ls->pool_size, ev->log), NGX_OK);
@@ -55,13 +57,40 @@
             return NGX_OK;
         }
 
-#if !(HAVE_INHERITED_NONBLOCK)
+
+#if (HAVE_INHERITED_NONBLOCK)
+
+#if (HAVE_AIO_EVENT)
+        if ((ngx_event_flags & NGX_HAVE_AIO_EVENT)) {
+            if (ngx_blocking(s) == -1) {
+                ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno,
+                              ngx_blocking_n " %s failed", ls->addr_text.data);
+                return NGX_OK;
+            }
+        }
+#endif
+
+#else /* !HAVE_INHERITED_NONBLOCK */
+
+#if (HAVE_AIO_EVENT)
+        if (!(ngx_event_flags & NGX_HAVE_AIO_EVENT)) {
+            if (ngx_nonblocking(s) == -1) {
+                ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno,
+                           ngx_nonblocking_n " %s failed", ls->addr_text.data);
+                return NGX_OK;
+            }
+        }
+#else
         if (ngx_nonblocking(s) == -1) {
             ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno,
                           ngx_nonblocking_n " %s failed", ls->addr_text.data);
+            return NGX_OK;
         }
 #endif
 
+#endif /* HAVE_INHERITED_NONBLOCK */
+
+
         rev = &ngx_read_events[s];
         wev = &ngx_write_events[s];
         c = &ngx_connections[s];
@@ -88,9 +117,15 @@
         c->fd = s;
         c->unexpected_eof = 1;
         wev->write = 1;
-        wev->ready = 1;
 
-        wev->timer = rev->timer = 10000;
+#if (HAVE_AIO_EVENT)
+        if (!(ngx_event_flags & NGX_HAVE_AIO_EVENT)) {
+            wev->ready = 1;
+        }
+#endif
+
+        /* STUB ? */ wev->timer = rev->timer = 10000;
+
         wev->timer_handler = rev->timer_handler = ngx_event_close_connection;
         wev->close_handler = rev->close_handler = ngx_event_close_connection;
 
diff --git a/src/event/ngx_event_acceptex.c b/src/event/ngx_event_acceptex.c
new file mode 100644
index 0000000..83b3c42
--- /dev/null
+++ b/src/event/ngx_event_acceptex.c
@@ -0,0 +1,150 @@
+
+#include <ngx_config.h>
+
+#include <ngx_core.h>
+#include <ngx_types.h>
+#include <ngx_log.h>
+#include <ngx_listen.h>
+#include <ngx_connection.h>
+#include <ngx_event.h>
+#include <ngx_event_close.h>
+#include <ngx_iocp_module.h>
+
+#include <ngx_event_acceptex.h>
+
+
+
+/* This function should always return NGX_OK even there are some failures
+   because if we return NGX_ERROR then listening socket would be closed */
+
+int ngx_event_acceptex(ngx_event_t *ev)
+{
+    ngx_connection_t  *c;
+
+    c = (ngx_connection_t *) ev->data;
+
+    if (ev->ovlp.error) {
+        ngx_log_error(NGX_LOG_CRIT, ev->log, ev->ovlp.error,
+                      "AcceptEx(%s) falied", c->addr_text.data);
+        return NGX_OK;
+    }
+
+    GetAcceptExSockaddrs(c->data, 0,
+                         c->socklen + 16, c->socklen + 16,
+                         &c->local_sockaddr, &c->local_socklen,
+                         &c->sockaddr, &c->socklen);
+
+    ngx_event_post_acceptex(c->listening, 1);
+
+    /* STUB: InterlockedInc() */
+    c->number = ngx_connection_counter++;
+
+    c->handler(c);
+
+    return NGX_OK;
+
+}
+
+
+int ngx_event_post_acceptex(ngx_listen_t *ls, int n)
+{
+    int                i;
+    u_int              rcvd;
+    ngx_err_t          err;
+    ngx_pool_t        *pool;
+    ngx_event_t       *rev, *wev;
+    ngx_socket_t       s;
+    ngx_connection_t  *c;
+
+    for (i = 0; i < n; i++) {
+
+        /* TODO: look up reused sockets */
+
+        ngx_log_debug(ls->log, "socket: %x" _ ls->flags);
+
+        s = ngx_socket(ls->family, ls->type, ls->protocol, ls->flags);
+
+        if (s == -1) {
+            ngx_log_error(NGX_LOG_ALERT, ls->log, ngx_socket_errno,
+                          ngx_socket_n " for AcceptEx(%s) falied",
+                          ls->addr_text.data);
+
+            return NGX_ERROR;
+        }
+
+        ngx_test_null(pool, ngx_create_pool(ls->pool_size, ls->log), NGX_ERROR);
+
+        rev = &ngx_read_events[s];
+        wev = &ngx_write_events[s];
+        c = &ngx_connections[s];
+
+        ngx_memzero(rev, sizeof(ngx_event_t));
+        ngx_memzero(wev, sizeof(ngx_event_t));
+        ngx_memzero(c, sizeof(ngx_connection_t));
+
+        c->pool = pool;
+
+        rev->index = wev->index = NGX_INVALID_INDEX;
+
+        rev->ovlp.event = rev;
+        wev->ovlp.event = wev;
+
+        rev->data = wev->data = c;
+        c->read = rev;
+        c->write = wev;
+
+        c->family = ls->family;
+        c->socklen = ls->socklen;
+        c->addr = ls->addr;
+        c->addr_text_max_len = ls->addr_text_max_len;
+        c->post_accept_timeout = ls->post_accept_timeout;
+
+        c->listening = ls;
+        c->fd = s;
+
+        c->unexpected_eof = 1;
+        wev->write = 1;
+
+        c->handler = ls->handler;
+        rev->event_handler = ngx_event_acceptex;
+
+        wev->timer_handler = rev->timer_handler = ngx_event_close_connection;
+        wev->close_handler = rev->close_handler = ngx_event_close_connection;
+
+        c->ctx = ls->ctx;
+        c->servers = ls->servers;
+
+        ngx_test_null(c->data, ngx_palloc(pool, 2 * (c->socklen + 16)),
+                      NGX_ERROR);
+        ngx_test_null(c->local_sockaddr, ngx_palloc(pool, c->socklen),
+                      NGX_ERROR);
+        ngx_test_null(c->sockaddr, ngx_palloc(pool, c->socklen),
+                      NGX_ERROR);
+
+        ngx_test_null(c->log, ngx_palloc(c->pool, sizeof(ngx_log_t)),
+                      NGX_ERROR);
+        ngx_memcpy(c->log, ls->log, sizeof(ngx_log_t));
+        rev->log = wev->log = c->log;
+
+        if (ngx_iocp_add_event(rev) == NGX_ERROR) {
+            return NGX_ERROR;
+        }
+
+        if (AcceptEx(ls->fd, s, c->data, 0,
+                     c->socklen + 16, c->socklen + 16,
+                     &rcvd, (LPOVERLAPPED) &rev->ovlp) == 0) {
+
+            err = ngx_socket_errno;
+            if (err == WSA_IO_PENDING) {
+                return NGX_OK;
+            }
+
+            ngx_log_error(NGX_LOG_ALERT, ls->log, err,
+                          "AcceptEx(%s) falied", ls->addr_text.data);
+
+            return NGX_ERROR;
+        }
+    }
+
+    return NGX_OK;
+}
diff --git a/src/event/ngx_event_acceptex.h b/src/event/ngx_event_acceptex.h
new file mode 100644
index 0000000..8d55af1
--- /dev/null
+++ b/src/event/ngx_event_acceptex.h
@@ -0,0 +1,13 @@
+#ifndef _NGX_EVENT_ACCEPTEX_H_INCLUDED_
+#define _NGX_EVENT_ACCEPTEX_H_INCLUDED_
+
+
+#include <ngx_listen.h>
+#include <ngx_event.h>
+
+
+int ngx_event_acceptex(ngx_event_t *ev);
+int ngx_event_post_acceptex(ngx_listen_t *ls, int n);
+
+
+#endif /* _NGX_EVENT_ACCEPTEX_H_INCLUDED_ */
diff --git a/src/event/ngx_event_aio_read.c b/src/event/ngx_event_aio_read.c
new file mode 100644
index 0000000..4561cf4
--- /dev/null
+++ b/src/event/ngx_event_aio_read.c
@@ -0,0 +1,113 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_errno.h>
+#include <ngx_log.h>
+#include <ngx_recv.h>
+#include <ngx_connection.h>
+#include <ngx_event.h>
+
+#if (HAVE_KQUEUE)
+#include <ngx_kqueue_module.h>
+#endif
+
+
+/*
+    The data is ready - 3 syscalls:
+        aio_read(), aio_error(), aio_return()
+    The data is not ready - 4 (kqueue) or 5 syscalls:
+        aio_read(), aio_error(), notifiction,
+                                             aio_error(), aio_return()
+                                             aio_cancel(), aio_error()
+*/
+
+ssize_t ngx_event_aio_read(ngx_connection_t *c, char *buf, size_t size)
+{
+    int           rc, first, canceled;
+    ngx_event_t  *ev;
+
+    ev = c->read;
+
+    canceled = 0;
+
+    if (ev->timedout) {
+        ngx_set_socket_errno(NGX_ETIMEDOUT);
+        ngx_log_error(NGX_LOG_ERR, ev->log, 0, "aio_read() timed out");
+
+        rc = aio_cancel(c->fd, &ev->aiocb);
+        if (rc == -1) {
+            ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno,
+                          "aio_cancel() failed");
+            return NGX_ERROR;
+        }
+
+        ngx_log_debug(ev->log, "aio_cancel: %d" _ rc);
+
+        canceled = 1;
+
+        ev->ready = 1;
+    }
+
+    first = 0;
+
+    if (!ev->ready) {
+        ngx_memzero(&ev->aiocb, sizeof(struct aiocb));
+
+        ev->aiocb.aio_fildes = c->fd;
+        ev->aiocb.aio_buf = buf;
+        ev->aiocb.aio_nbytes = size;
+
+#if (HAVE_KQUEUE)
+        ev->aiocb.aio_sigevent.sigev_notify_kqueue = kq;
+        ev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
+        ev->aiocb.aio_sigevent.sigev_value.sigval_ptr = ev;
+#endif
+
+        if (aio_read(&ev->aiocb) == -1) {
+            ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno,
+                          "aio_read() failed");
+            return NGX_ERROR;
+        }
+
+        ngx_log_debug(ev->log, "aio_read: OK");
+
+        ev->active = 1;
+        first = 1;
+    }
+
+    ev->ready = 0;
+
+    rc = aio_error(&ev->aiocb);
+    if (rc == -1) {
+        ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_error() failed");
+        return NGX_ERROR;
+    }
+
+    if (rc != 0) {
+        if (rc == NGX_EINPROGRESS) {
+            if (!first) {
+                ngx_log_error(NGX_LOG_CRIT, ev->log, rc,
+                              "aio_read() still in progress");
+            }
+            return NGX_AGAIN;
+        }
+
+        if (rc == NGX_ECANCELED && canceled) {
+            return NGX_ERROR;
+        }
+
+        ngx_log_error(NGX_LOG_CRIT, ev->log, rc, "aio_read() failed");
+        return NGX_ERROR;
+    }
+
+    rc = aio_return(&ev->aiocb);
+    if (rc == -1) {
+        ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_return() failed");
+
+        return NGX_ERROR;
+    }
+
+    ngx_log_debug(ev->log, "aio_read: %d" _ rc);
+
+    return rc;
+}
diff --git a/src/event/ngx_event_aio_write.c b/src/event/ngx_event_aio_write.c
new file mode 100644
index 0000000..00da4f4
--- /dev/null
+++ b/src/event/ngx_event_aio_write.c
@@ -0,0 +1,115 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_errno.h>
+#include <ngx_log.h>
+#include <ngx_recv.h>
+#include <ngx_connection.h>
+
+#if (HAVE_KQUEUE)
+#include <ngx_kqueue_module.h>
+#endif
+
+
+/*
+    The data is ready - 3 syscalls:
+        aio_write(), aio_error(), aio_return()
+    The data is not ready - 4 (kqueue) or 5 syscalls:
+        aio_write(), aio_error(), notifiction,
+                                             aio_error(), aio_return()
+                                             aio_cancel(), aio_error()
+*/
+
+ssize_t ngx_event_aio_write(ngx_connection_t *c, char *buf, size_t size)
+{
+    int           rc, first, canceled;
+    ngx_event_t  *ev;
+
+    ev = c->write;
+
+    canceled = 0;
+
+ngx_log_debug(ev->log, "aio: ev->ready: %d" _ ev->ready);
+ngx_log_debug(ev->log, "aio: aiocb: %08x" _ &ev->aiocb);
+
+    if (ev->timedout) {
+        ngx_set_socket_errno(NGX_ETIMEDOUT);
+        ngx_log_error(NGX_LOG_ERR, ev->log, 0, "aio_write() timed out");
+
+        rc = aio_cancel(c->fd, &ev->aiocb);
+        if (rc == -1) {
+            ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno,
+                          "aio_cancel() failed");
+            return NGX_ERROR;
+        }
+
+        ngx_log_debug(ev->log, "aio_cancel: %d" _ rc);
+
+        canceled = 1;
+
+        ev->ready = 1;
+    }
+
+    first = 0;
+
+    if (!ev->ready) {
+        ngx_memzero(&ev->aiocb, sizeof(struct aiocb));
+
+        ev->aiocb.aio_fildes = c->fd;
+        ev->aiocb.aio_buf = buf;
+        ev->aiocb.aio_nbytes = size;
+
+#if (HAVE_KQUEUE)
+        ev->aiocb.aio_sigevent.sigev_notify_kqueue = kq;
+        ev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
+        ev->aiocb.aio_sigevent.sigev_value.sigval_ptr = ev;
+#endif
+
+        if (aio_write(&ev->aiocb) == -1) {
+            ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno,
+                          "aio_write() failed");
+            return NGX_ERROR;
+        }
+
+        ngx_log_debug(ev->log, "aio_write: OK");
+
+        ev->active = 1;
+        first = 1;
+    }
+
+    ev->ready = 0;
+
+    rc = aio_error(&ev->aiocb);
+    if (rc == -1) {
+        ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_error() failed");
+        return NGX_ERROR;
+    }
+
+    if (rc != 0) {
+        if (rc == NGX_EINPROGRESS) {
+            if (!first) {
+                ngx_log_error(NGX_LOG_CRIT, ev->log, rc,
+                              "aio_write() still in progress");
+            }
+            return NGX_AGAIN;
+        }
+
+        if (rc == NGX_ECANCELED && canceled) {
+            return NGX_ERROR;
+        }
+
+        ngx_log_error(NGX_LOG_CRIT, ev->log, rc, "aio_write() failed");
+        return NGX_ERROR;
+    }
+
+    rc = aio_return(&ev->aiocb);
+    if (rc == -1) {
+        ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_return() failed");
+
+        return NGX_ERROR;
+    }
+
+    ngx_log_debug(ev->log, "aio_write: %d" _ rc);
+
+    return rc;
+}
diff --git a/src/event/ngx_event_close.c b/src/event/ngx_event_close.c
index c829c71..8c8fd1b 100644
--- a/src/event/ngx_event_close.c
+++ b/src/event/ngx_event_close.c
@@ -27,7 +27,7 @@
     ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
 
     if ((rc = ngx_close_socket(c->fd)) == -1)
-        ngx_log_error(NGX_LOG_ERR, c->log, ngx_socket_errno,
+        ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno,
                       "ngx_event_close: close failed");
 
     c->fd = -1;
diff --git a/src/event/ngx_event_recv.c b/src/event/ngx_event_recv.c
index 4b01a4c..4fa95c3 100644
--- a/src/event/ngx_event_recv.c
+++ b/src/event/ngx_event_recv.c
@@ -6,7 +6,7 @@
 #include <ngx_recv.h>
 #include <ngx_connection.h>
 
-int ngx_event_recv_core(ngx_connection_t *c, char *buf, size_t size)
+ssize_t ngx_event_recv_core(ngx_connection_t *c, char *buf, size_t size)
 {
     int                n;
     ngx_err_t          err;
@@ -20,9 +20,23 @@
 #if (HAVE_KQUEUE)
     ngx_log_debug(c->log, "ngx_event_recv: eof:%d, avail:%d, err:%d" _
                   c->read->eof _ c->read->available _ c->read->error);
-#if !(USE_KQUEUE)
-    if (ngx_event_type == NGX_KQUEUE_EVENT)
 #endif
+
+#if (USE_KQUEUE)
+
+    if (c->read->eof && c->read->available == 0) {
+        if (c->read->error) {
+            ngx_log_error(NGX_LOG_ERR, c->log, c->read->error,
+                          "recv() failed");
+            return NGX_ERROR;
+        }
+
+        return 0;
+    }
+
+#elif (HAVE_KQUEUE)
+
+    if (ngx_event_type == NGX_KQUEUE_EVENT) {
         if (c->read->eof && c->read->available == 0) {
             if (c->read->error) {
                 ngx_log_error(NGX_LOG_ERR, c->log, c->read->error,
@@ -32,6 +46,8 @@
 
             return 0;
         }
+    }
+
 #endif
 
     n = ngx_recv(c->fd, buf, size, 0);
@@ -48,11 +64,16 @@
         return NGX_ERROR;
     }
 
-#if (HAVE_KQUEUE)
-#if !(USE_KQUEUE)
-    if (ngx_event_type == NGX_KQUEUE_EVENT)
-#endif
+#if (USE_KQUEUE)
+
+    c->read->available -= n;
+
+#elif (HAVE_KQUEUE)
+
+    if (ngx_event_type == NGX_KQUEUE_EVENT) {
         c->read->available -= n;
+    }
+
 #endif
 
     return n;
diff --git a/src/event/ngx_event_timer.h b/src/event/ngx_event_timer.h
index 7f1816a..227f702 100644
--- a/src/event/ngx_event_timer.h
+++ b/src/event/ngx_event_timer.h
@@ -15,8 +15,6 @@
 void ngx_event_expire_timers(ngx_msec_t timer);
 
 
-extern ngx_event_t  *ngx_timer_queue;
-
 
 ngx_inline static void ngx_event_del_timer(ngx_event_t *ev)
 {
@@ -41,4 +39,4 @@
 }
 
 
-#endif _NGX_EVENT_TIMER_H_INCLUDED_
+#endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */
diff --git a/src/event/ngx_event_write.c b/src/event/ngx_event_write.c
index 35949ec..9e7670c 100644
--- a/src/event/ngx_event_write.c
+++ b/src/event/ngx_event_write.c
@@ -11,11 +11,11 @@
 #include <ngx_event_write.h>
 
 
-ngx_chain_t *ngx_event_write(ngx_connection_t *c, ngx_chain_t *in,
-                             off_t flush)
+ngx_chain_t *ngx_event_write(ngx_connection_t *c, ngx_chain_t *in, off_t flush)
 {
-    int           rc;
-    char         *last;
+    int           rc, i, last;
+    u_int         flags;
+    char         *prev;
     off_t         sent;
     ngx_iovec_t  *iov;
     ngx_array_t  *header, *trailer;
@@ -24,6 +24,7 @@
 
     ch = in;
     file = NULL;
+    last = 0;
 
     ngx_test_null(header, ngx_create_array(c->pool, 10, sizeof(ngx_iovec_t)),
                   (ngx_chain_t *) -1);
@@ -36,12 +37,12 @@
         trailer->nelts = 0;
 
         if (ch->hunk->type & NGX_HUNK_IN_MEMORY) {
-            last = NULL;
+            prev = NULL;
             iov = NULL;
 
             while (ch && (ch->hunk->type & NGX_HUNK_IN_MEMORY))
             {
-                if (last == ch->hunk->pos.mem) {
+                if (prev == ch->hunk->pos.mem) {
                     iov->ngx_iov_len += ch->hunk->last.mem - ch->hunk->pos.mem;
 
                 } else {
@@ -49,7 +50,11 @@
                                   (ngx_chain_t *) -1);
                     iov->ngx_iov_base = ch->hunk->pos.mem;
                     iov->ngx_iov_len = ch->hunk->last.mem - ch->hunk->pos.mem;
-                    last = ch->hunk->last.mem;
+                    prev = ch->hunk->last.mem;
+                }
+
+                if (ch->hunk->type & NGX_HUNK_LAST) {
+                    last = 1;
                 }
 
                 ch = ch->next;
@@ -59,6 +64,10 @@
         if (ch && (ch->hunk->type & NGX_HUNK_FILE)) {
             file = ch->hunk;
             ch = ch->next;
+
+            if (ch->hunk->type & NGX_HUNK_LAST) {
+                last = 1;
+            }
         }
 
 #if (HAVE_MAX_SENDFILE_IOVEC)
@@ -68,12 +77,12 @@
         } else {
 #endif
             if (ch && ch->hunk->type & NGX_HUNK_IN_MEMORY) {
-                last = NULL;
+                prev = NULL;
                 iov = NULL;
 
                 while (ch && (ch->hunk->type & NGX_HUNK_IN_MEMORY)) {
 
-                    if (last == ch->hunk->pos.mem) {
+                    if (prev == ch->hunk->pos.mem) {
                         iov->ngx_iov_len +=
                                         ch->hunk->last.mem - ch->hunk->pos.mem;
 
@@ -83,7 +92,11 @@
                         iov->ngx_iov_base = ch->hunk->pos.mem;
                         iov->ngx_iov_len =
                                         ch->hunk->last.mem - ch->hunk->pos.mem;
-                        last = ch->hunk->last.mem;
+                        prev = ch->hunk->last.mem;
+                    }
+
+                    if (ch->hunk->type & NGX_HUNK_LAST) {
+                        last = 1;
                     }
 
                     ch = ch->next;
@@ -91,19 +104,47 @@
             }
 
             if (file) {
-                rc = ngx_sendfile(c->fd,
+                flags = ngx_sendfile_flags;
+#if (HAVE_SENDFILE_DISCONNECT)
+                if (last && c->close) {
+                    flags |= HAVE_SENDFILE_DISCONNECT;
+                }
+#endif
+                rc = ngx_sendfile(c,
                                   (ngx_iovec_t *) header->elts, header->nelts,
                                   file->file->fd, file->pos.file,
                                   (size_t) (file->last.file - file->pos.file),
                                   (ngx_iovec_t *) trailer->elts, trailer->nelts,
-                                  &sent, c->log);
+                                  &sent, flags);
+
+#if (HAVE_AIO_EVENT) && !(HAVE_IOCP_EVENT)
+            } else if (ngx_event_flags & NGX_HAVE_AIO_EVENT) {
+
+                sent = 0;
+                rc = NGX_AGAIN;
+                iov = (ngx_iovec_t *) header->elts;
+                for (i = 0; i < header->nelts; i++) {
+                    rc = ngx_event_aio_write(c, iov[i].ngx_iov_base,
+                                             iov[i].ngx_iov_len);
+
+                    if (rc > 0) {
+                        sent += rc;
+                    } else {
+                        break;
+                    }
+
+                    if (rc < (int) iov->ngx_iov_len) {
+                        break;
+                    }
+                }
+#endif
             } else {
                 rc = ngx_sendv(c, (ngx_iovec_t *) header->elts, header->nelts);
 
                 sent = rc > 0 ? rc: 0;
 
 #if (NGX_DEBUG_EVENT_WRITE)
-                ngx_log_debug(c->log, "sendv: " QD_FMT _ sent);
+                ngx_log_debug(c->log, "sendv: " OFF_FMT _ sent);
 #endif
             }
 #if (HAVE_MAX_SENDFILE_IOVEC)
@@ -118,7 +159,7 @@
         for (ch = in; ch; ch = ch->next) {
 
 #if (NGX_DEBUG_EVENT_WRITE)
-            ngx_log_debug(c->log, "event write: %x " QX_FMT " " QD_FMT _
+            ngx_log_debug(c->log, "event write: %x " QX_FMT " " OFF_FMT _
                           ch->hunk->type _
                           ch->hunk->pos.file _
                           ch->hunk->last.file - ch->hunk->pos.file);
@@ -129,7 +170,7 @@
                 ch->hunk->pos.file = ch->hunk->last.file;
 
 #if (NGX_DEBUG_EVENT_WRITE)
-                ngx_log_debug(c->log, "event write: " QX_FMT " 0 " QD_FMT _
+                ngx_log_debug(c->log, "event write: " QX_FMT " 0 " OFF_FMT _
                               ch->hunk->pos.file _ sent);
 #endif
 
@@ -144,7 +185,7 @@
             ch->hunk->pos.file += sent;
 
 #if (NGX_DEBUG_EVENT_WRITE)
-            ngx_log_debug(c->log, "event write: " QX_FMT " " QD_FMT _
+            ngx_log_debug(c->log, "event write: " QX_FMT " " OFF_FMT _
                           ch->hunk->pos.file _
                           ch->hunk->last.file - ch->hunk->pos.file);
 #endif
diff --git a/src/event/ngx_event_wsarecv.c b/src/event/ngx_event_wsarecv.c
new file mode 100644
index 0000000..20c0c1b
--- /dev/null
+++ b/src/event/ngx_event_wsarecv.c
@@ -0,0 +1,97 @@
+
+#include <ngx_config.h>
+
+#include <ngx_core.h>
+#include <ngx_errno.h>
+#include <ngx_log.h>
+#include <ngx_connection.h>
+#include <ngx_event.h>
+
+
+ssize_t ngx_event_wsarecv(ngx_connection_t *c, char *buf, size_t size)
+{
+    int           rc;
+    u_int         flags;
+    size_t        bytes;
+    ngx_err_t     err;
+    WSABUF        wsabuf[1];
+    ngx_event_t  *ev;
+    LPWSAOVERLAPPED_COMPLETION_ROUTINE  handler;
+
+    ev = c->read;
+
+/* DEBUG */ bytes = 0;
+
+    if (ev->timedout) {
+        ngx_set_socket_errno(NGX_ETIMEDOUT);
+        ngx_log_error(NGX_LOG_ERR, ev->log, 0, "WSARecv() timed out");
+
+        return NGX_ERROR;
+    }
+
+    if (ev->ready) {
+        ev->ready = 0;
+
+#if (HAVE_IOCP_EVENT) /* iocp */
+
+        if (ngx_event_flags & NGX_HAVE_IOCP_EVENT) {
+            if (ev->ovlp.error) {
+                ngx_log_error(NGX_LOG_ERR, c->log, ev->ovlp.error,
+                              "WSARecv() failed");
+                return NGX_ERROR;
+            }
+
+            return ev->available;
+        }
+
+#endif
+
+        if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &ev->ovlp,
+                                   &bytes, 0, NULL) == 0) {
+            err = ngx_socket_errno;
+            ngx_log_error(NGX_LOG_CRIT, ev->log, err,
+                         "WSARecv() or WSAGetOverlappedResult() failed");
+
+            return NGX_ERROR;
+        }
+
+        return bytes;
+    }
+
+    ngx_memzero(&ev->ovlp, sizeof(WSAOVERLAPPED));
+    wsabuf[0].buf = buf;
+    wsabuf[0].len = size;
+    flags = 0;
+
+#if 0
+    handler = ev->handler;
+#else
+    handler = NULL;
+#endif
+
+    rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags,
+                 (LPWSAOVERLAPPED) &ev->ovlp, handler);
+
+    ngx_log_debug(ev->log, "WSARecv: %d:%d" _ rc _ bytes);
+
+    if (rc == -1) {
+        err = ngx_socket_errno;
+        if (err == WSA_IO_PENDING) {
+            return NGX_AGAIN;
+
+        } else {
+            ngx_log_error(NGX_LOG_CRIT, ev->log, err, "WSARecv() failed");
+            return NGX_ERROR;
+        }
+    }
+
+#if (HAVE_IOCP_EVENT) /* iocp */
+
+    if (ngx_event_flags & NGX_HAVE_IOCP_EVENT) {
+        return NGX_AGAIN;
+    }
+
+#endif
+
+    return bytes;
+}