nginx for Windows - WSASend() socket error 10057

[Yury Shpakov]

Hi there,


Trying to make nginx work as SMTP server and/or SMTP proxy. Done everything according to:
http://nginx.org/en/docs/howto_build_on_win32.html

But excluded (don't care about SSL at this point so don't want to install/configure Perl now):
    --with-openssl=objs/lib/openssl-master \
    --with-openssl-opt=no-asm \
    --with-http_ssl_module \

And added:
    --with-mail

nmake was successful and nginx.exe was created.

However nginx.exe keeps failing with the error:
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

Windows API says the following about this error:


WSAENOTCONN
10057

Socket is not connected.
A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using sendto<https://docs.microsoft.com/en-us/windows/desktop/api/winsock/nf-winsock-sendto>) no address was supplied. Any other type of operation might also return this error—for example, setsockopt<https://docs.microsoft.com/en-us/windows/desktop/api/winsock/nf-winsock-setsockopt> setting SO_KEEPALIVE<https://docs.microsoft.com/en-us/windows/desktop/winsock/so-keepalive> if the connection has been reset.
https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2
Windows Sockets Error Codes (Winsock2.h) - Win32 apps | Microsoft Docs<https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2>
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.
docs.microsoft.com

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.

Any recommendation for me to make it work?

Tried to play with config (commenting/uncommenting):

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


mail {
    server_name       localhost;
    auth_http         localhost:9000/cgi-bin/nginxauth.cgi;
#    auth_http         none;

    smtp_auth         none;
#    smtp_auth         login plain cram-md5;
#    smtp_capabilities "SIZE 10485760" ENHANCEDSTATUSCODES 8BITMIME DSN;
    xclient           off;

    server {
        listen   8025;
        protocol smtp;
        proxy    on;
        proxy_pass_error_message on;
    }
}

Tried both under a regular user and under admin. Tried on 25, 1025 and 8025 ports.


Thank you,
Yury
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