4 files changed, 5 insertions, 0 deletions
diff --git a/src/event/modules/ngx_iocp_module.c b/src/event/modules/ngx_iocp_module.c
index 8f163e3e3..e00d967d0 100644
--- a/src/event/modules/ngx_iocp_module.c
+++ b/src/event/modules/ngx_iocp_module.c
@@ -93,6 +93,8 @@ ngx_os_io_t ngx_iocp_io = {
     NULL,
     ngx_udp_overlapped_wsarecv,
     NULL,
+    NULL,
+    NULL,
     ngx_overlapped_wsasend_chain,
     0
 };
diff --git a/src/event/ngx_event.h b/src/event/ngx_event.h
index 27139ee8c..f0b75af61 100644
--- a/src/event/ngx_event.h
+++ b/src/event/ngx_event.h
@@ -430,6 +430,7 @@ extern ngx_os_io_t  ngx_io;
 #define ngx_send             ngx_io.send
 #define ngx_send_chain       ngx_io.send_chain
 #define ngx_udp_send         ngx_io.udp_send
+#define ngx_udp_send_chain   ngx_io.udp_send_chain
 
 
 #define NGX_EVENT_MODULE      0x544E5645  /* "EVNT" */
diff --git a/src/event/ngx_event_accept.c b/src/event/ngx_event_accept.c
index 4445adc62..1fce2e89b 100644
--- a/src/event/ngx_event_accept.c
+++ b/src/event/ngx_event_accept.c
@@ -467,6 +467,7 @@ ngx_event_recvmsg(ngx_event_t *ev)
         *log = ls->log;
 
         c->send = ngx_udp_send;
+        c->send_chain = ngx_udp_send_chain;
 
         c->log = log;
         c->pool->log = log;
diff --git a/src/event/ngx_event_connect.c b/src/event/ngx_event_connect.c
index 06534ef06..c5bb80681 100644
--- a/src/event/ngx_event_connect.c
+++ b/src/event/ngx_event_connect.c
@@ -166,6 +166,7 @@ ngx_event_connect_peer(ngx_peer_connection_t *pc)
     } else { /* type == SOCK_DGRAM */
         c->recv = ngx_udp_recv;
         c->send = ngx_send;
+        c->send_chain = ngx_udp_send_chain;
     }
 
     c->log_error = pc->log_error;