1 files changed, 152 insertions, 0 deletions
diff --git a/src/nxt_conn.c b/src/nxt_conn.c
new file mode 100644
index 00000000..3f21747e
--- /dev/null
+++ b/src/nxt_conn.c
@@ -0,0 +1,152 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#include <nxt_main.h>
+
+
+nxt_conn_io_t  nxt_unix_conn_io = {
+    nxt_conn_io_connect,
+    nxt_conn_io_accept,
+
+    nxt_conn_io_read,
+    nxt_conn_io_recvbuf,
+    nxt_conn_io_recv,
+
+    nxt_conn_io_write,
+    nxt_event_conn_io_write_chunk,
+
+#if (NXT_HAVE_LINUX_SENDFILE)
+    nxt_linux_event_conn_io_sendfile,
+#elif (NXT_HAVE_FREEBSD_SENDFILE)
+    nxt_freebsd_event_conn_io_sendfile,
+#elif (NXT_HAVE_MACOSX_SENDFILE)
+    nxt_macosx_event_conn_io_sendfile,
+#elif (NXT_HAVE_SOLARIS_SENDFILEV)
+    nxt_solaris_event_conn_io_sendfilev,
+#elif (NXT_HAVE_AIX_SEND_FILE)
+    nxt_aix_event_conn_io_send_file,
+#elif (NXT_HAVE_HPUX_SENDFILE)
+    nxt_hpux_event_conn_io_sendfile,
+#else
+    nxt_event_conn_io_sendbuf,
+#endif
+
+    nxt_event_conn_io_writev,
+    nxt_event_conn_io_send,
+
+    nxt_conn_io_shutdown,
+};
+
+
+nxt_conn_t *
+nxt_conn_create(nxt_mem_pool_t *mp, nxt_task_t *task)
+{
+    nxt_conn_t    *c;
+    nxt_thread_t  *thr;
+
+    c = nxt_mem_zalloc(mp, sizeof(nxt_conn_t));
+    if (nxt_slow_path(c == NULL)) {
+        return NULL;
+    }
+
+    c->mem_pool = mp;
+
+    c->socket.fd = -1;
+
+    c->socket.log = &c->log;
+    c->log = *task->log;
+
+    /* The while loop skips possible uint32_t overflow. */
+
+    while (c->log.ident == 0) {
+        c->log.ident = nxt_task_next_ident();
+    }
+
+    thr = nxt_thread();
+    thr->engine->connections++;
+
+    c->task.thread = thr;
+    c->task.log = &c->log;
+    c->task.ident = c->log.ident;
+    c->socket.task = &c->task;
+    c->read_timer.task = &c->task;
+    c->write_timer.task = &c->task;
+
+    c->io = thr->engine->event.io;
+    c->max_chunk = NXT_INT32_T_MAX;
+    c->sendfile = NXT_CONN_SENDFILE_UNSET;
+
+    c->socket.read_work_queue = &thr->engine->fast_work_queue;
+    c->socket.write_work_queue = &thr->engine->fast_work_queue;
+
+    nxt_conn_timer_init(&c->read_timer, c, c->socket.read_work_queue);
+    nxt_conn_timer_init(&c->write_timer, c, c->socket.write_work_queue);
+
+    nxt_log_debug(&c->log, "connections: %uD", thr->engine->connections);
+
+    return c;
+}
+
+
+void
+nxt_conn_io_shutdown(nxt_task_t *task, void *obj, void *data)
+{
+    int            ret;
+    socklen_t      len;
+    nxt_conn_t     *c;
+    struct linger  linger;
+
+    c = obj;
+
+    nxt_debug(task, "event conn shutdown");
+
+    if (c->socket.timedout) {
+        /*
+         * Resetting of timed out connection on close
+         * releases kernel memory associated with socket.
+         * This also causes sending TCP/IP RST to a peer.
+         */
+        linger.l_onoff = 1;
+        linger.l_linger = 0;
+        len = sizeof(struct linger);
+
+        ret = setsockopt(c->socket.fd, SOL_SOCKET, SO_LINGER, &linger, len);
+
+        if (nxt_slow_path(ret != 0)) {
+            nxt_log(task, NXT_LOG_CRIT, "setsockopt(%d, SO_LINGER) failed %E",
+                    c->socket.fd, nxt_socket_errno);
+        }
+    }
+
+    c->write_state->close_handler(task, c, data);
+}
+
+
+void
+nxt_conn_timer(nxt_event_engine_t *engine, nxt_conn_t *c,
+    const nxt_conn_state_t *state, nxt_timer_t *timer)
+{
+    nxt_msec_t  value;
+
+    if (state->timer_value != NULL) {
+        value = state->timer_value(c, state->timer_data);
+
+        if (value != 0) {
+            timer->handler = state->timer_handler;
+            nxt_timer_add(engine, timer, value);
+        }
+    }
+}
+
+
+void
+nxt_conn_work_queue_set(nxt_conn_t *c, nxt_work_queue_t *wq)
+{
+    c->read_work_queue = wq;
+    c->write_work_queue = wq;
+    c->read_timer.work_queue = wq;
+    c->write_timer.work_queue = wq;
+}