Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm Sender: cygwin-owner AT sourceware DOT cygnus DOT com Delivered-To: mailing list cygwin AT sourceware DOT cygnus DOT com Message-ID: <008a01be9857$c8b90d20$1600000a@yjlee> From: "Yu-Jui Lee" To: Subject: Cygwin b20.1software within Microsoft Proxy server Date: Fri, 7 May 1999 15:04:00 +0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0087_01BE989A.D67F3900" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2014.211 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2014.211 ------=_NextPart_000_0087_01BE989A.D67F3900 Content-Type: text/plain; charset="big5" Content-Transfer-Encoding: quoted-printable Hi, I encountered a network problem after my company installed a Microsoft Proxy server and my PC Win98 installed the WinSock Proxy client. All the software compiled by Cygwin b20.1 cannot connect to hosts outside the proxy firewall. While the software provided by Microsoft like ftp.exe and telnet.exe can work happily. To investigate this problem further, I examine the dll dependencies of these executable files by using "dumpbin.exe" provided with MS VC++ 6.0. I got a conclusion that all files that depends on "wsock32.dll" can pass the proxy firewall and connect outside, while those don't use "wsock32.dll" cannot pass the proxy firewall. I don't know how this could happen since as far as I know, all network software in MS Win98 should use "wsock32.dll". Why Cygwin b20.1 can provide the network socket functions without using winsock and can work correctly in an environment without a proxy firewall? And anyone knows how to make those programs compiled with Cygwin b20.1 work through the Microsoft Proxy server? Thanks a lot! Yu-Jui Lee Trinity Communications Inc. Taipei, Taiwan =20 ------=_NextPart_000_0087_01BE989A.D67F3900 Content-Type: text/html; charset="big5" Content-Transfer-Encoding: quoted-printable

Hi,

I encountered a network problem after my = company installed a=20 Microsoft
Proxy server and my PC Win98 installed the WinSock Proxy = client.=20 All
the software compiled by Cygwin b20.1 cannot connect to hosts=20 outside
the proxy firewall. While the software provided by Microsoft=20 like
ftp.exe and telnet.exe can = work=20 happily.

To investigate this problem further, I = examine the dll dependencies=20 of
these executable files by using "dumpbin.exe" provided with MS = VC++=20 6.0.
I got a conclusion that all files that depends on = "wsock32.dll"
can=20 pass the proxy firewall and connect outside, while those don't=20 use
"wsock32.dll" cannot pass the proxy = firewall.

I don't know how this could happen since = as far as I know, all=20 network
software in MS Win98 should use "wsock32.dll". Why Cygwin = b20.1=20 can
provide the network socket functions without using winsock and=20 can
work correctly in an environment without a proxy firewall? And=20 anyone
knows how to make those programs compiled with Cygwin b20.1=20 work
through the Microsoft Proxy server?

Thanks a lot!

Yu-Jui Lee

Trinity Communications = Inc.

Taipei, Taiwan

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