X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-1.1 required=5.0 tests=AWL,BAYES_00,SARE_MSGID_LONG40,SPF_PASS X-Spam-Check-By: sourceware.org MIME-Version: 1.0 In-Reply-To: <4B44BB7A.5040003@cygwin.com> References: <53b627ea1001060651u9dc16ddqbc3a38c7fb3f453c AT mail DOT gmail DOT com> <4B44BB7A DOT 5040003 AT cygwin DOT com> Date: Wed, 6 Jan 2010 22:51:01 +0530 Message-ID: <53b627ea1001060921l1c54580akc03f09f4f50e8e07@mail.gmail.com> Subject: Re: Cygwin and raw sockets - Windows XP with SP2 , Vista and later From: Karthik Balaguru To: cygwin AT cygwin DOT com Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On Wed, Jan 6, 2010 at 10:04 PM, Larry Hall (Cygwin) wrote: > On 01/06/2010 09:51 AM, Karthik Balaguru wrote: >> >> I got the below info from >> http://www.cygwin.com/cygwin-ug-net/highlights.html#ov-hi-sockets =A0- >> 'Socket-related calls in Cygwin basically call the functions by the >> same name in Winsock, Microsoft's implementation of Berkeley sockets, >> but with lots of tweaks.' >> But, It does not clearly convey whether cygwin uses Microsoft's >> winsock . Does cygwin use winsock ? >> If cygwin uses winsock, then i think the raw socket usage restrictions >> applied for further releases from 'Windows XP with SP2' is applicable >> for cygwin also.:-( > > Cygwin does not provide its own implementation for sockets. =A0It uses > Winsock V2 so basic restrictions imposed by Winsock will constrain > Cygwin as well. > Larry, Thx for the clarification. But, I came across the below link that conveys that the network support in Cygwin is supposed to provide the POSIX API, not the Winsock API - http://www.cygwin.com/faq/faq.api.html#faq.api.net-functions What does the above link refer to ? Interestingly ,the below link conveys that raw sockets is supported unofficially ! Strange ! http://sourceware.org/ml/cygwin/2005-10/msg00753.html But, how & why is it supported unofficially ? The below link seems to convey the problems of using the Raw sockets with Winsock and it also about the restrictions w.r.t various windows releases - http://tangentsoft.net/wskfaq/advanced.html#rawsocket So, is the method of usage of winpcap is the only way to use raw sockets in cygwin environment ? =46rom http://www.winpcap.org/docs/docs_41b5/html/main.html , I find that the purpose of WinPcap is to give this kind of access to Win32 applications that it provides facilities to: 1. transmit raw packets 2. capture raw packets and 3. filter the packets Any other ideas/ways apart from winpcap to use raw sockets in cygwin environment ? Thx in advans, Karthik Balaguru -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple