diff --git a/src/event/ngx_event_pipe.c b/src/event/ngx_event_pipe.c
index 5d5035c..bc9fb26 100644
--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -454,10 +454,6 @@
 
                 rc = p->output_filter(p->output_ctx, p->out);
 
-                if (downstream->destroyed) {
-                    return NGX_ABORT;
-                }
-
                 if (rc == NGX_ERROR) {
                     p->downstream_error = 1;
                     return ngx_event_pipe_drain_chains(p);
@@ -476,10 +472,6 @@
 
                 rc = p->output_filter(p->output_ctx, p->in);
 
-                if (downstream->destroyed) {
-                    return NGX_ABORT;
-                }
-
                 if (rc == NGX_ERROR) {
                     p->downstream_error = 1;
                     return ngx_event_pipe_drain_chains(p);
@@ -624,10 +616,6 @@
 
         rc = p->output_filter(p->output_ctx, out);
 
-        if (downstream->destroyed) {
-            return NGX_ABORT;
-        }
-
         if (rc == NGX_ERROR) {
             p->downstream_error = 1;
             return ngx_event_pipe_drain_chains(p);
diff --git a/src/http/modules/perl/ngx_http_perl_module.c b/src/http/modules/perl/ngx_http_perl_module.c
index 4409e8f..c4f52a5 100644
--- a/src/http/modules/perl/ngx_http_perl_module.c
+++ b/src/http/modules/perl/ngx_http_perl_module.c
@@ -686,15 +686,6 @@
 
     SPAGAIN;
 
-    if (c->destroyed) {
-        PUTBACK;
-
-        FREETMPS;
-        LEAVE;
-
-        return NGX_DONE;
-    }
-
     if (n) {
         if (rv == NULL) {
             status = POPi;
diff --git a/src/http/ngx_http_copy_filter_module.c b/src/http/ngx_http_copy_filter_module.c
index c7f6be2..688677f 100644
--- a/src/http/ngx_http_copy_filter_module.c
+++ b/src/http/ngx_http_copy_filter_module.c
@@ -109,18 +109,16 @@
 
     rc = ngx_output_chain(ctx, in);
 
-    if (!c->destroyed) {
+    if (ctx->in == NULL) {
+        r->buffered &= ~NGX_HTTP_COPY_BUFFERED;
 
-        if (ctx->in == NULL) {
-            r->buffered &= ~NGX_HTTP_COPY_BUFFERED;
-        } else {
-            r->buffered |= NGX_HTTP_COPY_BUFFERED;
-        }
-
-        ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
-                       "copy filter: %i \"%V?%V\"", rc, &r->uri, &r->args);
+    } else {
+        r->buffered |= NGX_HTTP_COPY_BUFFERED;
     }
 
+    ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "copy filter: %i \"%V?%V\"", rc, &r->uri, &r->args);
+
     return rc;
 }
 
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 988d8f0..7b47fbb 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -1685,11 +1685,6 @@
     rc = ngx_http_top_body_filter(r, in);
 
     if (rc == NGX_ERROR) {
-
-        if (c->destroyed) {
-            return NGX_DONE;
-        }
-
         /* NGX_ERROR may be returned by any filter */
         c->error = 1;
     }
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index f071cf5..07bd563 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -2004,10 +2004,6 @@
         ngx_del_timer(c->write);
     }
 
-    if (c->destroyed) {
-        return;
-    }
-
     if (c->read->eof) {
         ngx_http_close_request(r, 0);
         return;
@@ -2179,10 +2175,6 @@
 
     rc = ngx_http_output_filter(r, NULL);
 
-    if (c->destroyed) {
-        return;
-    }
-
     ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http writer output filter: %d, \"%V?%V\"",
                    rc, &r->uri, &r->args);
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 404be48..f552d2e 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2260,10 +2260,6 @@
             if (u->out_bufs || u->busy_bufs) {
                 rc = ngx_http_output_filter(r, u->out_bufs);
 
-                if (downstream->destroyed) {
-                    return;
-                }
-
                 if (rc == NGX_ERROR) {
                     ngx_http_upstream_finalize_request(r, u, 0);
                     return;
@@ -2436,11 +2432,6 @@
             }
 
             if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
-
-                if (c->destroyed) {
-                    return;
-                }
-
                 ngx_http_upstream_finalize_request(r, u, 0);
                 return;
             }
@@ -2466,11 +2457,6 @@
         }
 
         if (ngx_event_pipe(p, 1) == NGX_ABORT) {
-
-            if (c->destroyed) {
-                return;
-            }
-
             ngx_http_upstream_finalize_request(r, u, 0);
             return;
         }
@@ -2498,14 +2484,7 @@
         ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
 
     } else {
-        c = r->connection;
-
         if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
-
-            if (c->destroyed) {
-                return;
-            }
-
             ngx_http_upstream_finalize_request(r, u, 0);
             return;
         }