Sorry, I have mistake.<br><br>This is correct patch:<br><br>Index: src/http/ngx_http_request_body.c<br>===================================================================<br>--- src/http/ngx_http_request_body.c    (revision 4146)<br>

+++ src/http/ngx_http_request_body.c    (working copy)<br>@@ -437,6 +437,7 @@<br> ngx_int_t<br> ngx_http_discard_request_body(ngx_http_request_t *r)<br> {<br>+    int           rc;<br>     ssize_t       size;<br>     ngx_event_t  *rev;<br>

 <br>@@ -476,11 +477,13 @@<br> <br>     r->read_event_handler = ngx_http_discarded_request_body_handler;<br> <br>-    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>-        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>

+    rc = ngx_http_read_discarded_request_body(r);<br>+<br>+    if (rc == NGX_ERROR) {<br>+        return NGX_HTTP_CLIENT_CLOSED_REQUEST;<br>     }<br> <br>-    if (ngx_http_read_discarded_request_body(r) == NGX_OK) {<br>

+    if (rc == NGX_OK) {<br>         r->lingering_close = 0;<br> <br>     } else {<br>@@ -488,6 +491,10 @@<br>         r->discard_body = 1;<br>     }<br> <br>+    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>+        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>

+    }<br>+<br>     return NGX_OK;<br> }<br> <br>@@ -527,6 +534,11 @@<br> <br>     rc = ngx_http_read_discarded_request_body(r);<br> <br>+    if (rc == NGX_ERROR) {<br>+        ngx_http_finalize_request(r, NGX_HTTP_CLIENT_CLOSED_REQUEST);<br>

+        return;<br>+    }<br>+<br>     if (rc == NGX_OK) {<br>         r->discard_body = 0;<br>         r->lingering_close = 0;<br>@@ -583,19 +595,15 @@<br> <br>         n = r->connection->recv(r->connection, buffer, size);<br>

 <br>-        if (n == NGX_ERROR) {<br>+        if (n == 0 || n == NGX_ERROR) {<br>             r->connection->error = 1;<br>-            return NGX_OK;<br>+            return NGX_ERROR;<br>         }<br> <br>         if (n == NGX_AGAIN) {<br>

             return NGX_AGAIN;<br>         }<br> <br>-        if (n == 0) {<br>-            return NGX_OK;<br>-        }<br>-<br>         r->headers_in.content_length_n -= n;<br>     }<br> }<br><br><br><br><div class="gmail_quote">

On Tue, Sep 27, 2011 at 2:33 PM, Simon Liu <span dir="ltr"><<a href="mailto:simohayha.bobo@gmail.com">simohayha.bobo@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

Thanks Maxim.<br><br>This is new patch, I think this may be better.<br><br>I think ngx_handle_read_event can't be avoid(in ngx_http_discard_request_body), because it doesn't known <span style="color:rgb(0, 0, 0);font-family:'Microsoft YaHei';font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:nowrap;word-spacing:0px">whether or not need to add read event</span> in ngx_http_discard_request_body. So there  need ngx_handle_read_event to <span style="color:rgb(0, 0, 0);font-family:'Microsoft YaHei';font-size:13px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:nowrap;word-spacing:0px">judge</span>.<div class="im">

<br>
<br>Index: src/http/ngx_http_request_body.c<br>===================================================================<br>--- src/http/ngx_http_request_body.c    (revision 4146)<br>+++ src/http/ngx_http_request_body.c    (working copy)<br>

</div>
@@ -476,11 +476,13 @@<div class="im"><br> <br>     r->read_event_handler = ngx_http_discarded_request_body_handler;<br> <br>-    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>-        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>

</div>+    rc = ngx_http_read_discarded_request_body(r);<br>
+<br>+    if (rc == NGX_ERROR) {<br>+        return NGX_HTTP_CLIENT_CLOSED_REQUEST;<br>     }<br> <br>-    if (ngx_http_read_discarded_request_body(r) == NGX_OK) {<br>+    if (rc == NGX_OK) {<br>         r->lingering_close = 0;<br>


 <br>     } else {<br>@@ -488,6 +490,10 @@<div class="im"><br>         r->discard_body = 1;<br>     }<br> <br>+    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>+        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>+    }<br>

+<br>     return NGX_OK;<br>
 }<br> <br></div>@@ -527,6 +533,11 @@<br> <br>     rc = ngx_http_read_discarded_request_body(r);<br> <br>+    if (rc == NGX_ERROR) {<br>+        ngx_http_finalize_request(r, NGX_HTTP_CLIENT_CLOSED_REQUEST);<br>+        return;<br>


+    }<br>+<br>     if (rc == NGX_OK) {<br>         r->discard_body = 0;<br>         r->lingering_close = 0;<br>@@ -583,19 +594,15 @@<br> <br>         n = r->connection->recv(r->connection, buffer, size);<br>


 <br>-        if (n == NGX_ERROR) {<br>+        if (n == 0 || n == NGX_ERROR) {<br>             r->connection->error = 1;<br>-            return NGX_OK;<br>+            return NGX_ERROR;<br>         }<br> <br>         if (n == NGX_AGAIN) {<br>


             return NGX_AGAIN;<br>         }<br> <br>-        if (n == 0) {<br>-            return NGX_OK;<br>-        }<br>-<br>         r->headers_in.content_length_n -= n;<div><div></div><div class="h5"><br>     }<br>

 }<br><br><br><div class="gmail_quote">
On Mon, Sep 26, 2011 at 11:50 PM, Maxim Dounin <span dir="ltr"><<a href="mailto:mdounin@mdounin.ru" target="_blank">mdounin@mdounin.ru</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">




Hello!<br>
<div><br>
On Mon, Sep 26, 2011 at 11:34:42PM +0800, Simon Liu wrote:<br>
<br>
> Thanks .<br>
><br>
> This is patch:<br>
><br>
> Index: src/http/ngx_http_request_body.c<br>
> ===================================================================<br>
> --- src/http/ngx_http_request_body.c    (revision 4146)<br>
> +++ src/http/ngx_http_request_body.c    (working copy)<br>
> @@ -476,10 +476,6 @@<br>
><br>
>      r->read_event_handler = ngx_http_discarded_request_body_handler;<br>
><br>
> -    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>
> -        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>
> -    }<br>
> -<br>
>      if (ngx_http_read_discarded_request_body(r) == NGX_OK) {<br>
>          r->lingering_close = 0;<br>
><br>
> @@ -488,6 +484,10 @@<br>
>          r->discard_body = 1;<br>
>      }<br>
><br>
> +    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>
> +        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>
> +    }<br>
> +<br>
>      return NGX_OK;<br>
>  }<br>
<br>
</div>It's better to avoid ngx_handle_read_event() altogether in<br>
case ngx_http_read_discarded_request_body() returns NGX_OK (i.e.<br>
everything is read, no futher actions required).<br>
<br>
It would be a bit more readable and slightly more optimal.<br>
<font color="#888888"><br>
Maxim Dounin<br>
</font><div><div></div><div><br>
><br>
><br>
> On Mon, Sep 26, 2011 at 11:08 PM, Maxim Dounin <<a href="mailto:mdounin@mdounin.ru" target="_blank">mdounin@mdounin.ru</a>> wrote:<br>
><br>
> > Hello!<br>
> ><br>
> > On Mon, Sep 26, 2011 at 10:42:20PM +0800, Simon Liu wrote:<br>
> ><br>
> > > Hi all.<br>
> > ><br>
> > > My nginx version is svn trunk.<br>
> > ><br>
> > > Nginx will call ngx_handle_read_event, and then<br>
> > > call ngx_http_read_discarded_request_body In<br>
> > ngx_http_discard_request_body .<br>
> > >  So this will cause client's body read  incomplete data , because<br>
> > > ngx_handle_read_event<br>
> > > may delete read event when use level event.<br>
> > ><br>
> > > ngx_handle_read_event:<br>
> > ><br>
> > > else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {<br>
> > ><br>
> > >         /* select, poll, /dev/poll */<br>
> > > .................................................................<br>
> > ><br>
> > >         if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {<br>
> > >             if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT |<br>
> > flags)<br>
> > >                 == NGX_ERROR)<br>
> > >             {<br>
> > >                 return NGX_ERROR;<br>
> > >             }<br>
> > ><br>
> > >             return NGX_OK;<br>
> > >         }<br>
> > ><br>
> > ><br>
> > > ngx_http_discard_request_body:<br>
> > ><br>
> > >     r->read_event_handler = ngx_http_discarded_request_body_handler;<br>
> > ><br>
> > >     if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>
> > >         return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>
> > >     }<br>
> > ><br>
> > >     if (ngx_http_read_discarded_request_body(r) == NGX_OK) {<br>
> > >         r->lingering_close = 0;<br>
> > ><br>
> > ><br>
> > > thanks!<br>
> ><br>
> > Ack, ngx_handle_read_event() should be after<br>
> > ngx_http_read_discarded_request_body() call, like it's done in<br>
> > ngx_http_discarded_request_body_handler().<br>
> ><br>
> > Care to provide patch?<br>
> ><br>
> > Maxim Dounin<br>
> ><br>
> > _______________________________________________<br>
> > nginx-devel mailing list<br>
> > <a href="mailto:nginx-devel@nginx.org" target="_blank">nginx-devel@nginx.org</a><br>
> > <a href="http://mailman.nginx.org/mailman/listinfo/nginx-devel" target="_blank">http://mailman.nginx.org/mailman/listinfo/nginx-devel</a><br>
> ><br>
<br>
> Index: src/http/ngx_http_request_body.c<br>
> ===================================================================<br>
> --- src/http/ngx_http_request_body.c  (revision 4146)<br>
> +++ src/http/ngx_http_request_body.c  (working copy)<br>
> @@ -476,10 +476,6 @@<br>
><br>
>      r->read_event_handler = ngx_http_discarded_request_body_handler;<br>
><br>
> -    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>
> -        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>
> -    }<br>
> -<br>
>      if (ngx_http_read_discarded_request_body(r) == NGX_OK) {<br>
>          r->lingering_close = 0;<br>
><br>
> @@ -488,6 +484,10 @@<br>
>          r->discard_body = 1;<br>
>      }<br>
><br>
> +    if (ngx_handle_read_event(rev, 0) != NGX_OK) {<br>
> +        return NGX_HTTP_INTERNAL_SERVER_ERROR;<br>
> +    }<br>
> +<br>
>      return NGX_OK;<br>
>  }<br>
><br>
<br>
> _______________________________________________<br>
> nginx-devel mailing list<br>
> <a href="mailto:nginx-devel@nginx.org" target="_blank">nginx-devel@nginx.org</a><br>
> <a href="http://mailman.nginx.org/mailman/listinfo/nginx-devel" target="_blank">http://mailman.nginx.org/mailman/listinfo/nginx-devel</a><br>
<br>
_______________________________________________<br>
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<a href="mailto:nginx-devel@nginx.org" target="_blank">nginx-devel@nginx.org</a><br>
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</div></div></blockquote></div><br><br clear="all"><br></div></div>-- <br>douban:<a href="http://www.douban.com/people/mustang/" target="_blank">www.douban.com/people/mustang/</a><div class="im"><br><br>blog: <a href="http://www.pagefault.info" target="_blank">www.pagefault.info</a><br>




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</blockquote></div><br><br clear="all"><br>-- <br>博观约取<br><br>豆瓣:<a href="http://www.douban.com/people/mustang/" target="_blank">www.douban.com/people/mustang/</a><br><br>blog: <a href="http://www.pagefault.info" target="_blank">www.pagefault.info</a><br>

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