From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A787D1C2A3 for ; Sun, 17 Mar 2024 15:17:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710688659; cv=none; b=UzQHF97PrbvjCsBShHH3nJ30hSFWMqYvIBXdLvS5fwiwVYrfcdO0b6ERH59S/JU1CABMWMWtnVs/niNnOayxMVnDtI8wkzuBavjo6fDGKcSOHBQekckp3MRUxAT0fTXuUqQAUHRKZ7Q6dVJuRzR+FWGa7OiMOkC6OwVylBY65MI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710688659; c=relaxed/simple; bh=REmS/Aj8jDuXjSPu3NCfFHeogVhHQ3awtSJlWrVXEHY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=BNsUEjBcHpPg2KBWb9UKl67AvGz1SXDfah41+8FcAbSSX22fmCS/udVItJSHdCYuITSbtPEqQxbsaBdsyDiEkjgDXsAVAHNB7BDSlauc3pZhsq/Yi7kYnOweB7jvY1p96Jooyx7SFaoRBFwJXrwS4XMnhA6jBokVXFtlqxUv6ww= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=m4ywYUcz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="m4ywYUcz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78EB6C433F1; Sun, 17 Mar 2024 15:17:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710688659; bh=REmS/Aj8jDuXjSPu3NCfFHeogVhHQ3awtSJlWrVXEHY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=m4ywYUczgixzqMXDb41wSKdPhHJ8UpZcmPGt1pv9oLEp1g5pkFnSAnLfSI3sUfn3f UD22RtsfFM9bOt3pD+oY0fn8WfKNFv+wlRYxNPxsyrD70DODLVUBUs34qd/rhmnf50 Kle9pXdvXTEj6/xCP81RX6M3uXDCAsdPvltmycJ6tSIO9wOdO7i2cpcPS/PR70repj 6Vjt1uOC1heE3HOLgpovx+k0nWhSNY8AxX1YGqbARlXRTaKKu3/TxZouL3ZvQfx/aM SkAtfZpdPdu+85ZJj0LVkuDpQ78uf0TIwfhUBnmxgfRDbnt8FDNkiyQ2d4ECIQkVHD 7kukVfkz7hoOg== Date: Sun, 17 Mar 2024 16:17:36 +0100 From: Alejandro Colomar To: Oliver Crumrine Cc: linux-man@vger.kernel.org Subject: Re: [PATCH] ip.7: Add not supported by SOCK_STREAM to socket options Message-ID: References: <6okjxxxylfeedmng6xafklbyrnleihzw3twr6mqvta4ihuxaxc@3bpndgyuv6ek> Precedence: bulk X-Mailing-List: linux-man@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="buA79o1hsT3LrUZV" Content-Disposition: inline In-Reply-To: --buA79o1hsT3LrUZV Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Sun, 17 Mar 2024 16:17:36 +0100 From: Alejandro Colomar To: Oliver Crumrine Cc: linux-man@vger.kernel.org Subject: Re: [PATCH] ip.7: Add not supported by SOCK_STREAM to socket options Hi Oliver, On Sun, Mar 17, 2024 at 06:52:54AM -0400, Oliver Crumrine wrote: > On Sun, Mar 17, 2024 at 02:55:08PM +0100, Alejandro Colomar wrote: > > On Sun, Mar 17, 2024 at 05:02:39AM -0400, Oliver Crumrine wrote: > > > s =3D socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); > >=20 > > Why use IPPROTO_UDP? ip(7)'s SYNOPSIS uses 0. Are there any other > Both are fine, but I can change the code to zero. > > protocols available with (AF_INET, SOCK_DGRAM)? > According to the ip(7) man page, only IPPROTO_UDPLITE, which functions > basically the same as udp, going as far as to use the same protocol > handler. I believe it's just a difference in the way checksums are > handled between UDP and UDPLITE. Ahh, ok, then IPPROTO_UDP is fine. > >=20 > > Now about the patch, it seems to miss IP_RETOPTS, which is also handled > > in ip_cmsg_recv_offset()? Or am I missing something? > >=20 > According to the ip(7) man page, IP_RETOPTS functions the same as > IP_RECVOPTS, which already properly states it is not supported on=20 > SOCK_STREAM sockets. I still prefer if we state it's not supported. One could think that this one might be a version supported by SOCK_STREAM. > > Please resend the programs when you send v2 of the patch, not send the > > client programs, and show a diff of both programs. > I don't think this warrants a v2 -- I haven't changed the patch at all, > but I'll resend the programs, and heres a diff of the dgram server > program, the only one I changed: Actually, the diff I was interested in is the diff between the dgram and the stream servers. Have a lovely day! Alex >=20 > --- a/testDgramSocketServer.c 2024-03-17 06:47:47.440033068 -0400 > +++ b/testDgramSocketServer.c 2024-03-17 06:48:15.800033455 -0400 > @@ -22,7 +22,7 @@ > struct sockaddr_in local_addr; > int s; > =20 > - s =3D socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); > + s =3D socket(AF_INET, SOCK_DGRAM, 0); > if (s =3D=3D -1){ > err(1, "error creating socket"); > } >=20 >=20 > > Have a lovely day! > > Alex > >=20 > > > if(s =3D=3D -1){ > > > err(1, "error creating socket"); > > > } > > >=20 > > > memset(&server_addr, 0, sizeof(server_addr)); > > > =09 > > > server_addr.sin_family =3D AF_INET; > > > server_addr.sin_port =3D htons(PORT); > > > if(inet_pton(AF_INET, ADDR, &server_addr.sin_addr) !=3D 1){ //I real= ize I'm checking the return value differently here. If you read the man pag= e for inet_pton, it'll make sense. > > > err(1, "error converting network address"); > > > } > > >=20 > > > if(sendto(s, buf, strlen(buf), 0, (struct sockaddr*)&server_addr, si= zeof(server_addr)) =3D=3D -1){ > > > err(1, "error sending data"); > > > } > > > =09 > > > close(s); > > > } > >=20 > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > >=20 > > > #define PORT 8888 //The port on which to listen for incoming data > > >=20 > > >=20 > > > //Hi Alex, > > > //These are the two lines that allow you to switch between the three = socket options outlined in my patch > > > //The socket options tell the kernel to add a control message (cmsg),= allowing the program > > > //to recieve the data it is requesting. The three options are: IP_REC= VTOS for the type of service byte, > > > //IP_RECVORIGDSTADDR for the orignial dst address, and IP_PKTINFO for= some random packet info. > > > #define SOCKOPT IP_RECVORIGDSTADDR > > > //This field is synonymous with the above one. Valid options are: IP_= TOS, IP_ORIGDSTADDR, and IP_PKTINFO > > > #define RECIVEOPTION IP_ORIGDSTADDR > > >=20 > > > int main(void){ > > > struct sockaddr_in local_addr;=09 > > > int s; > > > =09 > > > s =3D socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); > > > if (s =3D=3D -1){ > > > err(1, "error creating socket"); > > > } > > > =09 > > > memset(&local_addr, 0, sizeof(local_addr)); > > > =09 > > > local_addr.sin_family =3D AF_INET; > > > local_addr.sin_port =3D htons(PORT); > > > local_addr.sin_addr.s_addr =3D htonl(INADDR_ANY); > > >=20 > > > int yes =3D 1; > > > if(setsockopt(s, IPPROTO_IP, SOCKOPT, &yes, sizeof(yes)) =3D=3D -1){ > > > err(1, "error setting socket option"); > > > } > > >=20 > > >=20 > > > if(bind(s, (struct sockaddr*)&local_addr, sizeof(local_addr) ) =3D= =3D -1){ > > > err(1, "error binding to port. try changing it or running as root"); > > > } > > >=20 > > > while(1){ > > > struct msghdr mhdr; > > > struct iovec iov[1]; > > > struct cmsghdr *cmhdr; > > > char control[1000]; > > > char databuf[BUFSIZ]; > > > unsigned char tos =3D 0; > > >=20 > > > mhdr.msg_name =3D &local_addr; > > > mhdr.msg_namelen =3D sizeof(local_addr); > > > mhdr.msg_iov =3D iov; > > > mhdr.msg_iovlen =3D 1; > > > mhdr.msg_control =3D &control; > > > mhdr.msg_controllen =3D sizeof(control); > > > iov[0].iov_base =3D databuf; > > > iov[0].iov_len =3D sizeof(databuf); > > > memset(databuf, 0, sizeof(databuf));=09 > > > =09 > > > //this is blocking > > > int msglen =3D recvmsg(s, &mhdr, 0); > > > if (msglen =3D=3D -1){ > > > err(1, "recvmsg"); > > > } > > > cmhdr =3D CMSG_FIRSTHDR(&mhdr); > > > while (cmhdr) { > > > printf("cmsg recieved\n"); > > > if (cmhdr->cmsg_level =3D=3D IPPROTO_IP && cmhdr->cmsg_type =3D=3D= RECIVEOPTION) { > > > //read the byte recieved > > > tos =3D ((unsigned char *)CMSG_DATA(cmhdr))[0]; > > > } > > > cmhdr =3D CMSG_NXTHDR(&mhdr, cmhdr); > > > } > > > //print out the first byte of data recieved in hex. You can verify = this in wireshark if you like. > > > printf("data read: %sbyte =3D %02X\n", databuf, tos); =09 > > > =09 > > > } > > >=20 > > > close(s); > > > return 0; > > > } > >=20 > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > >=20 > > > #define PORT 8888 //The port on which to send data > > > #define ADDR "127.0.0.1" //The internet address to send packets to > > >=20 > > > int main(void){ > > > int s; > > > struct sockaddr_in server_addr; > > >=20 > > > char buf[] =3D "testing 1 2 3\n"; > > >=20 > > > s =3D socket(AF_INET, SOCK_STREAM, 0); > > > if(s =3D=3D -1){ > > > err(1, "error creating socket"); > > > } > > >=20 > > > memset(&server_addr, 0, sizeof(server_addr)); > > > =09 > > > server_addr.sin_family =3D AF_INET; > > > server_addr.sin_port =3D htons(PORT); > > > if(inet_pton(AF_INET, ADDR, &server_addr.sin_addr) !=3D 1){ // I rea= lize I'm checking the return value differently here. If you read the man pa= ge for inet_pton, it'll make sense. > > > err(1, "error converting network address"); > > > } > > >=20 > > > if(connect(s, (struct sockaddr*)&server_addr, sizeof(server_addr)) = =3D=3D -1){ > > > err(1, "error connecting"); > > > } > > > if(send(s, buf, strlen(buf), 0) =3D=3D -1){ > > > err(1, "error sending data"); > > > } > > > =09 > > > close(s); > > > } > >=20 > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > >=20 > > > #define PORT 8888 //The port on which to listen for incoming data > > >=20 > > >=20 > > > //Hi Alex, > > > //These are the two lines that allow you to switch between the three = socket options outlined in my patch > > > //The socket options tell the kernel to add a control message (cmsg),= allowing the program > > > //to recieve the data it is requesting. The three options are: IP_REC= VTOS for the type of service byte, > > > //IP_RECVORIGDSTADDR for the orignial dst address, and IP_PKTINFO for= some random packet info. > > > #define SOCKOPT IP_RECVORIGDSTADDR > > > //This field is synonymous with the above one. Valid options are: IP_= TOS, IP_ORIGDSTADDR, and IP_PKTINFO > > > #define RECIVEOPTION IP_ORIGDSTADDR > > >=20 > > > int main(void){ > > > struct sockaddr_in local_addr; > > > int s; > > > =09 > > > s =3D socket(AF_INET, SOCK_STREAM, 0); > > > if (s =3D=3D -1){ > > > err(1, "error creating socket"); > > > } > > > =09 > > > memset(&local_addr, 0, sizeof(local_addr)); > > > =09 > > > local_addr.sin_family =3D AF_INET; > > > local_addr.sin_port =3D htons(PORT); > > > local_addr.sin_addr.s_addr =3D htonl(INADDR_ANY); > > >=20 > > > int yes =3D 1; > > > if(setsockopt(s, IPPROTO_IP, SOCKOPT, &yes, sizeof(yes)) =3D=3D -1){ > > > err(1, "error setting socket option"); > > > } > > >=20 > > >=20 > > > if(bind(s, (struct sockaddr*)&local_addr, sizeof(local_addr) ) =3D= =3D -1){ > > > err(1, "error binding to port. try changing it or running as root"); > > > } > > > =09 > > > if(listen(s, 10) =3D=3D -1){ //10 is the backlog of un-accepted conn= ections. its just an arbitrary number > > > err(1, "error listening on port"); > > > } > > >=20 > > > while(1){ > > > int connfd =3D accept(s, (struct sockaddr*)NULL, NULL); > > > if(connfd =3D=3D -1){ > > > err(1, "error accepting connection"); > > > } > > > if(setsockopt(s, IPPROTO_IP, SOCKOPT, &yes, sizeof(yes)) =3D=3D -1)= { //stream sockets should have this set on the connected socket as well. I = left it above for uniformity between the two programs. > > > err(1, "error setting socket option"); > > > } > > > =09 > > > struct msghdr mhdr; > > > struct iovec iov[1]; > > > struct cmsghdr *cmhdr; > > > char control[1000]; > > > char databuf[BUFSIZ]; > > > unsigned char tos =3D 0; > > >=20 > > > mhdr.msg_name =3D &local_addr; > > > mhdr.msg_namelen =3D sizeof(local_addr); > > > mhdr.msg_iov =3D iov; > > > mhdr.msg_iovlen =3D 1; > > > mhdr.msg_control =3D &control; > > > mhdr.msg_controllen =3D sizeof(control); > > > iov[0].iov_base =3D databuf; > > > iov[0].iov_len =3D sizeof(databuf); > > > memset(databuf, 0, sizeof(databuf));=09 > > > =09 > > > //this is blocking > > > int msglen =3D recvmsg(connfd, &mhdr, 0); > > > if (msglen =3D=3D -1){ > > > err(1, "recvmsg\n"); > > > } > > > cmhdr =3D CMSG_FIRSTHDR(&mhdr); > > > while (cmhdr) { > > > printf("cmsg recieved\n"); > > > if (cmhdr->cmsg_level =3D=3D IPPROTO_IP && cmhdr->cmsg_type =3D=3D= RECIVEOPTION) { > > > //read the byte recieved > > > tos =3D ((unsigned char *)CMSG_DATA(cmhdr))[0]; > > > } > > > cmhdr =3D CMSG_NXTHDR(&mhdr, cmhdr); > > > } > > > //print out the first byte of data recieved in hex. You can verify = this in wireshark if you like. > > > printf("data read: %sbyte =3D %02X\n", databuf, tos);=09 > > > close(connfd); > > > } > > >=20 > > > close(s); > > > return 0; > > > } > >=20 > >=20 > > --=20 > > >=20 >=20 > #include > #include > #include > #include > #include > #include > #include >=20 > #define PORT 8888 //The port on which to listen for incoming data >=20 >=20 > //Hi Alex, > //These are the two lines that allow you to switch between the three sock= et options outlined in my patch > //The socket options tell the kernel to add a control message (cmsg), all= owing the program > //to recieve the data it is requesting. The three options are: IP_RECVTOS= for the type of service byte, > //IP_RECVORIGDSTADDR for the orignial dst address, and IP_PKTINFO for som= e random packet info. > #define SOCKOPT IP_RECVORIGDSTADDR > //This field is synonymous with the above one. Valid options are: IP_TOS,= IP_ORIGDSTADDR, and IP_PKTINFO > #define RECIVEOPTION IP_ORIGDSTADDR >=20 > int main(void){ > struct sockaddr_in local_addr;=09 > int s; > =09 > s =3D socket(AF_INET, SOCK_DGRAM, 0); > if (s =3D=3D -1){ > err(1, "error creating socket"); > } > =09 > memset(&local_addr, 0, sizeof(local_addr)); > =09 > local_addr.sin_family =3D AF_INET; > local_addr.sin_port =3D htons(PORT); > local_addr.sin_addr.s_addr =3D htonl(INADDR_ANY); >=20 > int yes =3D 1; > if(setsockopt(s, IPPROTO_IP, SOCKOPT, &yes, sizeof(yes)) =3D=3D -1){ > err(1, "error setting socket option"); > } >=20 >=20 > if(bind(s, (struct sockaddr*)&local_addr, sizeof(local_addr) ) =3D=3D -1= ){ > err(1, "error binding to port. try changing it or running as root"); > } >=20 > while(1){ > struct msghdr mhdr; > struct iovec iov[1]; > struct cmsghdr *cmhdr; > char control[1000]; > char databuf[BUFSIZ]; > unsigned char tos =3D 0; >=20 > mhdr.msg_name =3D &local_addr; > mhdr.msg_namelen =3D sizeof(local_addr); > mhdr.msg_iov =3D iov; > mhdr.msg_iovlen =3D 1; > mhdr.msg_control =3D &control; > mhdr.msg_controllen =3D sizeof(control); > iov[0].iov_base =3D databuf; > iov[0].iov_len =3D sizeof(databuf); > memset(databuf, 0, sizeof(databuf));=09 > =09 > //this is blocking > int msglen =3D recvmsg(s, &mhdr, 0); > if (msglen =3D=3D -1){ > err(1, "recvmsg"); > } > cmhdr =3D CMSG_FIRSTHDR(&mhdr); > while (cmhdr) { > printf("cmsg recieved\n"); > if (cmhdr->cmsg_level =3D=3D IPPROTO_IP && cmhdr->cmsg_type =3D=3D REC= IVEOPTION) { > //read the byte recieved > tos =3D ((unsigned char *)CMSG_DATA(cmhdr))[0]; > } > cmhdr =3D CMSG_NXTHDR(&mhdr, cmhdr); > } > //print out the first byte of data recieved in hex. You can verify this= in wireshark if you like. > printf("data read: %sbyte =3D %02X\n", databuf, tos); =09 > =09 > } >=20 > close(s); > return 0; > } > #include > #include > #include > #include > #include > #include > #include >=20 > #define PORT 8888 //The port on which to listen for incoming data >=20 >=20 > //Hi Alex, > //These are the two lines that allow you to switch between the three sock= et options outlined in my patch > //The socket options tell the kernel to add a control message (cmsg), all= owing the program > //to recieve the data it is requesting. The three options are: IP_RECVTOS= for the type of service byte, > //IP_RECVORIGDSTADDR for the orignial dst address, and IP_PKTINFO for som= e random packet info. > #define SOCKOPT IP_RECVORIGDSTADDR > //This field is synonymous with the above one. Valid options are: IP_TOS,= IP_ORIGDSTADDR, and IP_PKTINFO > #define RECIVEOPTION IP_ORIGDSTADDR >=20 > int main(void){ > struct sockaddr_in local_addr; > int s; > =09 > s =3D socket(AF_INET, SOCK_STREAM, 0); > if (s =3D=3D -1){ > err(1, "error creating socket"); > } > =09 > memset(&local_addr, 0, sizeof(local_addr)); > =09 > local_addr.sin_family =3D AF_INET; > local_addr.sin_port =3D htons(PORT); > local_addr.sin_addr.s_addr =3D htonl(INADDR_ANY); >=20 > int yes =3D 1; > if(setsockopt(s, IPPROTO_IP, SOCKOPT, &yes, sizeof(yes)) =3D=3D -1){ > err(1, "error setting socket option"); > } >=20 >=20 > if(bind(s, (struct sockaddr*)&local_addr, sizeof(local_addr) ) =3D=3D -1= ){ > err(1, "error binding to port. try changing it or running as root"); > } > =09 > if(listen(s, 10) =3D=3D -1){ //10 is the backlog of un-accepted connecti= ons. its just an arbitrary number > err(1, "error listening on port"); > } >=20 > while(1){ > int connfd =3D accept(s, (struct sockaddr*)NULL, NULL); > if(connfd =3D=3D -1){ > err(1, "error accepting connection"); > } > if(setsockopt(s, IPPROTO_IP, SOCKOPT, &yes, sizeof(yes)) =3D=3D -1){ //= stream sockets should have this set on the connected socket as well. I left= it above for uniformity between the two programs. > err(1, "error setting socket option"); > } > =09 > struct msghdr mhdr; > struct iovec iov[1]; > struct cmsghdr *cmhdr; > char control[1000]; > char databuf[BUFSIZ]; > unsigned char tos =3D 0; >=20 > mhdr.msg_name =3D &local_addr; > mhdr.msg_namelen =3D sizeof(local_addr); > mhdr.msg_iov =3D iov; > mhdr.msg_iovlen =3D 1; > mhdr.msg_control =3D &control; > mhdr.msg_controllen =3D sizeof(control); > iov[0].iov_base =3D databuf; > iov[0].iov_len =3D sizeof(databuf); > memset(databuf, 0, sizeof(databuf));=09 > =09 > //this is blocking > int msglen =3D recvmsg(connfd, &mhdr, 0); > if (msglen =3D=3D -1){ > err(1, "recvmsg\n"); > } > cmhdr =3D CMSG_FIRSTHDR(&mhdr); > while (cmhdr) { > printf("cmsg recieved\n"); > if (cmhdr->cmsg_level =3D=3D IPPROTO_IP && cmhdr->cmsg_type =3D=3D REC= IVEOPTION) { > //read the byte recieved > tos =3D ((unsigned char *)CMSG_DATA(cmhdr))[0]; > } > cmhdr =3D CMSG_NXTHDR(&mhdr, cmhdr); > } > //print out the first byte of data recieved in hex. You can verify this= in wireshark if you like. > printf("data read: %sbyte =3D %02X\n", databuf, tos);=09 > close(connfd); > } >=20 > close(s); > return 0; > } --=20 --buA79o1hsT3LrUZV Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE6jqH8KTroDDkXfJAnowa+77/2zIFAmX3CZAACgkQnowa+77/ 2zKJNhAAgxWQa74GM5zig8/8iEZDJKo9pujDgL6Zf2yRuUtWfhpB6DhumOWNUgOx AgUVTwgj8kYGLDhGVseLYarq1VA09spS9JyY+RQvw4zqxyRZjfaWY4bEKxaZCJ6a +EX8KV1icYN2CbXdNCiwFzeFfucjGPZlYEOdBY7MCaTUWrxniX543qlq9TDWoRR6 bk3L9+Tv1REi51/tOI93isUp7K0y03bGBFbFN0tAFhqUga8othbvlFofHzdO7kcQ en/yJMw0abaH+oQ7bgC69mwryQYGlhDOxZnmmFg98KD1IFq7Wj0PELA/2cTfu7rU 5m2oioPt8HiLkIsQmiW2jSl7cc6yy6Mc0EU+FtAKNd9YBhGRwZ5/txUzmtNMJG3d glTDupYiZSj+Qo/PN1rLj7f8u10DZMaX1wa95axO9uXdUJwli6ucAkzCXXSpEqwn mwWcgcJJoajibjAsKIU/gqY5grL4qI7aKLL25gNA9NohZWyY7OAVrQlkWtwuNHr7 sQGzaPNZAgf3Obredf100RqLxcOU5JZGHKvmNDZAv954AigZGBr8w6JySzt7iPcW b1Yr4EnMer0i6sV66HMNLVbM3k6rc4ARtNrWadqmZwFKZonbU1k1bo1lxB4VAvWB usesCZJSHLMS8E+5uI1k2hi9x0TVMjXbLdIPxkzDrFWtyoV0OTw= =aZB9 -----END PGP SIGNATURE----- --buA79o1hsT3LrUZV--