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<p>I answered inline...</p>
<p>12.02.2020 18:59, Yury Shpakov wrote:</p>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px">
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Hi Sergey,</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Thank you for you response.</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">I tried <span style="color: #201f1e; font-family: Verdana, Geneva, sans-serif; font-size: 13.3333px; background-color: #ffffff; display: inline !important;">netstat /nabo and I don't see any reference to port 9000 at all.</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #201f1e; font-family: Verdana, Geneva, sans-serif; font-size: 13.3333px; background-color: #ffffff; display: inline !important;">So a problem is to make nginx to listen on port 9000 (as server)?</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #201f1e; font-family: Verdana, Geneva, sans-serif; font-size: 13.3333px; background-color: #ffffff; display: inline !important;">Or nginx is not listening on port 9000 but rather sending requests to port 9000 (as client)?</span></div>
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<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #0000ff;">With setting of `auth_http`, you are defining an URL to the service responsible for authentication (and upstream choice).</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #0000ff;">Of course then you should have something that would response to the auth-requests (your own upstream, or some nginx location, or some "foreign" http-server).</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #0000ff;">See</span> <a href="https://docs.nginx.com/nginx/admin-guide/mail-proxy/mail-proxy/">https://docs.nginx.com/nginx/admin-guide/mail-proxy/mail-proxy/</a> <span style="color: #0000ff;">for more examples.</span></div>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px">
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Maybe it's easier not to use auth_http at all? I was trying to remove it from configuration file but nginx was not happy.</div>
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<p><span style="color: #0000ff;">I have my own auth-module so I don't know how it can be solved in stock-nginx without this directive.</span></p>
<p><span style="color: #0000ff;">Take a look here - <a href="https://serverfault.com/questions/594962/nginx-understanding-the-purpose-of-auth-http-imap-proxy">https://serverfault.com/questions/594962/nginx-understanding-the-purpose-of-auth-http-imap-proxy</a> - you can use some nginx location (and internal URL to same nginx instance) to specify that.<br /></span></p>
<p><span style="color: #0000ff;">Anyway it is recommended to use some auth (on nginx side), because it'd preserve the resources of mail-servers, allow you to authenticate email clients with same user/password for all mail-servers (smtp, imap, pop3, etc) as well as the same user/pwd as for some other http-services. And it is used to choose an upstream server (if multiple) for the email processing.</span></p>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px">
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">At this point I don't need any authentication. I was told by my boss to use nginx for load testing of our service sending emails (SMTP client). I've got some SMTP Server and nginx would be used as SMTP proxy because it allows to set up delays.</div>
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<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #0000ff;">Well, an auth request to some nginx-location would allow you to set up delays even on authentication phase.</span></div>
<blockquote type="cite" style="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px">
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">And take into account that I REMOVED "--with-http_ssl_module" from parameters when I was building nginx.</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">And you advised to download some nginx.exe files but I believe they were built without "--with-mail" parameter (which I need).</div>
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<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #0000ff;">Although, it was compiled with "--with-mail" (you can see all parameters</span> <a href="https://github.com/sebres/nginx/releases/tag/release-1.13.0">in provided GH-link</a><span style="color: #0000ff;">)</span></div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"><span style="color: #0000ff;">But it would not help, because basically your issue seems to be the configuration (not the nginx.exe).</span></div>
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<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;"> </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Thank you,</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: #000000;">Yury</div>
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<div id="divRplyFwdMsg" dir="ltr"><span style="font-size: 11pt; color: #000000; font-family: Calibri,sans-serif;"><strong>From:</strong> Sergey Brester <serg.brester@sebres.de><br /> <strong>Sent:</strong> Wednesday, February 12, 2020 7:38 AM<br /> <strong>To:</strong> nginx-devel@nginx.org <nginx-devel@nginx.org><br /> <strong>Cc:</strong> Yury Shpakov <yshpakov@hotmail.com><br /> <strong>Subject:</strong> Re: nginx for Windows - WSASend() socket error 10057</span></div>
<div style="font-size: 10pt; font-family: Verdana,Geneva,sans-serif;">
<p>It looks like your service defined in auth_http doesn't answer (or no listener on 127.0.0.1 port 9000?)...</p>
<p>try netstat (in cmd as admin):</p>
<p style="padding-left: 30px;">netstat /nabo<br /> netstat /nabo | grep -A 1 ":9000\b"</p>
<p>and check whether the listener on port 9000 is bound to 127.0.0.1 (or it is 0.0.0.0 only?) and it is the process you expect to see there (can be "reserved" by some other windows-service).</p>
<p>additionally try to telnet or curl it:</p>
<p style="padding-left: 30px;">curl -H "Auth-Method: plain" -H "Auth-User: user" -H "Auth-Pass: pwd" -H "Auth-Protocol: imap" -H "Auth-Login-Attempt: 1" -i http://127.0.0.1:9000/cgi-bin/nginxauth.cgi</p>
<p>if it does not answer, make another attempt by replace 127.0.0.1 with 0.0.0.0 (or a host-name).</p>
<p>If it answers - see whether it is the expected response (some examples of good and bad responses are described in <a href="http://nginx.org/en/docs/mail/ngx_mail_auth_http_module.html">http://nginx.org/en/docs/mail/ngx_mail_auth_http_module.html</a>).</p>
<p>But I guess if WSASend fails, it would probably (unexpected) reject the connection during the send (or even connect) process.<br /> It can be also invalid (unexpected) content-length in keep-alive connect to auth-upstream - so send but still receive is expected (or vice versa).</p>
<p>Also follow this forum topic addressing similar issue: <a href="https://forum.nginx.org/read.php?2,257206,257207#msg-257207"> https://forum.nginx.org/read.php?2,257206,257207#msg-257207</a></p>
<p>Anyway it doesn't look to me like an issue of nginx (regardless windows or not), but you can also try some other ready build (for example on my <a href="https://github.com/sebres/nginx/releases/tag/release-1.13.0">GH</a> - <a href="https://github.com/sebres/nginx/files/2246440/nginx.zip"> nginx.zip</a>, where it works well).</p>
<p>Regards,<br /> Sergey</p>
<p>12.02.2020 03:01, Yury Shpakov wrote:</p>
<blockquote style="padding-left: 5px; border-left: #1010ff 2px solid; margin-left: 5px;">
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;"><span style="color: #000000; font-family: Calibri,Helvetica,sans-serif; font-size: 12pt;">Hi there,</span></div>
<div>
<div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Trying to make nginx work as SMTP server and/or SMTP proxy. Done everything according to:</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;"><a href="http://nginx.org/en/docs/howto_build_on_win32.html">http://nginx.org/en/docs/howto_build_on_win32.html</a></div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">But excluded (don't care about SSL at this point so don't want to install/configure Perl now):</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;"><span> --with-openssl=objs/lib/openssl-master \<br /> </span>
<div> --with-openssl-opt=no-asm \</div>
<div> --with-http_ssl_module \</div>
</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">And added:</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;"><span> --with-mail<br /> </span></div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">nmake was successful and nginx.exe was created.</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">However nginx.exe keeps failing with the error:</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">WSASend() failed (10057: A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied) while in http auth state, client: 127.0.0.1, server: 0.0.0.0:8025</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Windows API says the following about this error:</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">
<table style="border-collapse: collapse; border-spacing: 0px; table-layout: auto; width: 683px; font-size: 0.875rem; color: #171717; font-family: 'Segoe UI',SegoeUI,'Segoe WP','Helvetica Neue',Helvetica,Tahoma,Arial,sans-serif; background-color: #ffffff;">
<tbody>
<tr>
<td style="padding: 0.75rem 1rem; text-align: left; display: table-cell; line-height: 1.5; vertical-align: top; border-right: 0px solid; border-left: 0px solid; border-bottom: 0px solid; border-top-style: solid;"><dl style="margin: 0px;"><dt style="margin: 0px;"><strong style="font-weight: bolder;">WSAENOTCONN</strong></dt><dt style="margin: 0px;">10057</dt></dl></td>
<td style="padding: 0.75rem 1rem; text-align: left; display: table-cell; line-height: 1.5; vertical-align: top; border-right: 0px solid; border-left: 0px solid; border-bottom: 0px solid; border-top-style: solid;"><dl style="margin: 0px;"><dt style="margin: 0px;">Socket is not connected.</dt><dd style="margin: 0px;">A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using<span> </span><a style="outline: 0px;" href="https://docs.microsoft.com/en-us/windows/desktop/api/winsock/nf-winsock-sendto"><strong style="font-weight: bolder;">sendto</strong></a>) no address was supplied. Any other type of operation might also return this error—for example,<span> </span><a style="outline: 0px;" href="https://docs.microsoft.com/en-us/windows/desktop/api/winsock/nf-winsock-setsockopt"><strong style="font-weight: bolder;">setsockopt</strong></a><span> </span>setting<span> </span><a style="outline: 0px;" href="https://docs.microsoft.com/en-us/windows/desktop/winsock/so-keepalive"><strong style="font-weight: bolder;">SO_KEEPALIVE</strong></a><span> </span>if the connection has been reset.</dd></dl></td>
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<a id="LPlnk497731" href="https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2">https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2</a><br />
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<div id="LPTitle170815" style="font-size: 21px; font-weight: 300; margin-right: 8px; font-family: wf_segoe-ui_light,'Segoe UI Light','Segoe WP Light','Segoe UI','Segoe WP',Tahoma,Arial,sans-serif; margin-bottom: 12px;"><a id="LPUrlAnchor170815" style="text-decoration: none;" href="https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2">Windows Sockets Error Codes (Winsock2.h) - Win32 apps | Microsoft Docs</a></div>
<div id="LPDescription170815" style="font-size: 14px; max-height: 100px; color: #666666; font-family: wf_segoe-ui_normal,'Segoe UI','Segoe WP',Tahoma,Arial,sans-serif; margin-bottom: 12px; margin-right: 8px; overflow: hidden;">Return code/value Description; WSA_INVALID_HANDLE 6: Specified event object handle is invalid. An application attempts to use an event object, but the specified handle is not valid.</div>
<div id="LPMetadata170815" style="font-size: 14px; font-weight: 400; color: #a6a6a6; font-family: wf_segoe-ui_normal,'Segoe UI','Segoe WP',Tahoma,Arial,sans-serif;">docs.microsoft.com</div>
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<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Managed to debug your code in VS 2010 a little bit but it's brutal C so it's hard to figure your code out. And this debugger doesn't show you any local variables values.</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Any recommendation for me to make it work?</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Tried to play with config (commenting/uncommenting):</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">
<div>#user nobody;</div>
<div>worker_processes 1;</div>
<div>#error_log logs/error.log;</div>
<div>#error_log logs/error.log notice;</div>
<div>#error_log logs/error.log info;</div>
<div>#pid logs/nginx.pid;</div>
<div>events {</div>
<div> worker_connections 1024;</div>
<div>}</div>
<div>mail {</div>
<div> server_name localhost;</div>
<div> auth_http localhost:9000/cgi-bin/nginxauth.cgi;</div>
<div># auth_http none;</div>
<div> smtp_auth none;</div>
<div># smtp_auth login plain cram-md5;</div>
<div># smtp_capabilities "SIZE 10485760" ENHANCEDSTATUSCODES 8BITMIME DSN;</div>
<div> xclient off;</div>
<div> server {</div>
<div> listen 8025;</div>
<div> protocol smtp;</div>
<div><span style="font-family: Calibri,Helvetica,sans-serif; background-color: #ffffff; display: inline!important;"> <span> </span></span>proxy on;</div>
<div><span style="font-family: Calibri,Helvetica,sans-serif; background-color: #ffffff; display: inline!important;"> <span> </span></span>proxy_pass_error_message on;</div>
<div> }</div>
<div>}</div>
Tried both under a regular user and under admin. Tried on 25, 1025 and 8025 ports.</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Thank you,</div>
<div style="font-family: Calibri,Helvetica,sans-serif; font-size: 12pt; color: #000000;">Yury</div>
</div>
</div>
<br />
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