diff --git a/src/event/ngx_event_pipe.c b/src/event/ngx_event_pipe.c
index 531b13a..54412e1 100644
--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -960,6 +960,22 @@
         return NGX_OK;
     }
 
+    if (p->upstream_done) {
+        ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
+                       "input data after close");
+        return NGX_OK;
+    }
+
+    if (p->length == 0) {
+        p->upstream_done = 1;
+
+        ngx_log_error(NGX_LOG_WARN, p->log, 0,
+                      "upstream sent more data than specified in "
+                      "\"Content-Length\" header");
+
+        return NGX_OK;
+    }
+
     cl = ngx_chain_get_free_buf(p->pool, &p->free);
     if (cl == NULL) {
         return NGX_ERROR;
@@ -987,6 +1003,18 @@
         return NGX_OK;
     }
 
+    if (b->last - b->pos > p->length) {
+
+        ngx_log_error(NGX_LOG_WARN, p->log, 0,
+                      "upstream sent more data than specified in "
+                      "\"Content-Length\" header");
+
+        b->last = b->pos + p->length;
+        p->upstream_done = 1;
+
+        return NGX_OK;
+    }
+
     p->length -= b->last - b->pos;
 
     return NGX_OK;
diff --git a/src/http/modules/ngx_http_scgi_module.c b/src/http/modules/ngx_http_scgi_module.c
index 7216f78..600999c 100644
--- a/src/http/modules/ngx_http_scgi_module.c
+++ b/src/http/modules/ngx_http_scgi_module.c
@@ -49,6 +49,7 @@
 static ngx_int_t ngx_http_scgi_reinit_request(ngx_http_request_t *r);
 static ngx_int_t ngx_http_scgi_process_status_line(ngx_http_request_t *r);
 static ngx_int_t ngx_http_scgi_process_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_scgi_input_filter_init(void *data);
 static void ngx_http_scgi_abort_request(ngx_http_request_t *r);
 static void ngx_http_scgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc);
 
@@ -534,6 +535,10 @@
     u->pipe->input_filter = ngx_event_pipe_copy_input_filter;
     u->pipe->input_ctx = r;
 
+    u->input_filter_init = ngx_http_scgi_input_filter_init;
+    u->input_filter = ngx_http_upstream_non_buffered_filter;
+    u->input_filter_ctx = r;
+
     if (!scf->upstream.request_buffering
         && scf->upstream.pass_request_body
         && !r->headers_in.chunked)
@@ -1145,6 +1150,37 @@
 }
 
 
+static ngx_int_t
+ngx_http_scgi_input_filter_init(void *data)
+{
+    ngx_http_request_t   *r = data;
+    ngx_http_upstream_t  *u;
+
+    u = r->upstream;
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http scgi filter init s:%ui l:%O",
+                   u->headers_in.status_n, u->headers_in.content_length_n);
+
+    if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
+        || u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED)
+    {
+        u->pipe->length = 0;
+        u->length = 0;
+
+    } else if (r->method == NGX_HTTP_HEAD) {
+        u->pipe->length = -1;
+        u->length = -1;
+
+    } else {
+        u->pipe->length = u->headers_in.content_length_n;
+        u->length = u->headers_in.content_length_n;
+    }
+
+    return NGX_OK;
+}
+
+
 static void
 ngx_http_scgi_abort_request(ngx_http_request_t *r)
 {
diff --git a/src/http/modules/ngx_http_uwsgi_module.c b/src/http/modules/ngx_http_uwsgi_module.c
index bfc8b1d..fe15ee8 100644
--- a/src/http/modules/ngx_http_uwsgi_module.c
+++ b/src/http/modules/ngx_http_uwsgi_module.c
@@ -67,6 +67,7 @@
 static ngx_int_t ngx_http_uwsgi_reinit_request(ngx_http_request_t *r);
 static ngx_int_t ngx_http_uwsgi_process_status_line(ngx_http_request_t *r);
 static ngx_int_t ngx_http_uwsgi_process_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_uwsgi_input_filter_init(void *data);
 static void ngx_http_uwsgi_abort_request(ngx_http_request_t *r);
 static void ngx_http_uwsgi_finalize_request(ngx_http_request_t *r,
     ngx_int_t rc);
@@ -703,6 +704,10 @@
     u->pipe->input_filter = ngx_event_pipe_copy_input_filter;
     u->pipe->input_ctx = r;
 
+    u->input_filter_init = ngx_http_uwsgi_input_filter_init;
+    u->input_filter = ngx_http_upstream_non_buffered_filter;
+    u->input_filter_ctx = r;
+
     if (!uwcf->upstream.request_buffering
         && uwcf->upstream.pass_request_body
         && !r->headers_in.chunked)
@@ -1356,6 +1361,37 @@
 }
 
 
+static ngx_int_t
+ngx_http_uwsgi_input_filter_init(void *data)
+{
+    ngx_http_request_t   *r = data;
+    ngx_http_upstream_t  *u;
+
+    u = r->upstream;
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http uwsgi filter init s:%ui l:%O",
+                   u->headers_in.status_n, u->headers_in.content_length_n);
+
+    if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
+        || u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED)
+    {
+        u->pipe->length = 0;
+        u->length = 0;
+
+    } else if (r->method == NGX_HTTP_HEAD) {
+        u->pipe->length = -1;
+        u->length = -1;
+
+    } else {
+        u->pipe->length = u->headers_in.content_length_n;
+        u->length = u->headers_in.content_length_n;
+    }
+
+    return NGX_OK;
+}
+
+
 static void
 ngx_http_uwsgi_abort_request(ngx_http_request_t *r)
 {
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index be96be4..354370c 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -77,9 +77,6 @@
 static void
     ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
     ngx_uint_t do_write);
-static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
-static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
-    ssize_t bytes);
 #if (NGX_THREADS)
 static ngx_int_t ngx_http_upstream_thread_handler(ngx_thread_task_t *task,
     ngx_file_t *file);
@@ -3705,14 +3702,14 @@
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_upstream_non_buffered_filter_init(void *data)
 {
     return NGX_OK;
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
 {
     ngx_http_request_t  *r = data;
@@ -3748,6 +3745,18 @@
         return NGX_OK;
     }
 
+    if (bytes > u->length) {
+
+        ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
+                      "upstream sent more data than specified in "
+                      "\"Content-Length\" header");
+
+        cl->buf->last = cl->buf->pos + u->length;
+        u->length = 0;
+
+        return NGX_OK;
+    }
+
     u->length -= bytes;
 
     return NGX_OK;
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index 6079d72..2c93a32 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -414,6 +414,8 @@
 
 ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r);
 void ngx_http_upstream_init(ngx_http_request_t *r);
+ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
+ngx_int_t ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes);
 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf,
     ngx_url_t *u, ngx_uint_t flags);
 char *ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,