Squashed 'third_party/lksctp-tools/' content from commit 200eca7f1

Change-Id: I8f7575513f114b205178cac5c6b3706f3d725cb5
git-subtree-dir: third_party/lksctp-tools
git-subtree-split: 200eca7f1419b1ae53958b51e8551f7e7f6cd467
diff --git a/src/apps/peel_client.c b/src/apps/peel_client.c
new file mode 100644
index 0000000..5c195d3
--- /dev/null
+++ b/src/apps/peel_client.c
@@ -0,0 +1,672 @@
+/* SCTP kernel Implementation
+ * (C) Copyright IBM Corp. 2003
+ *
+ * The SCTP implementation is free software;
+ * you can redistribute it and/or modify it under the terms of
+ * the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * The SCTP implementation is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ *                 ************************
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU CC; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * In addition:
+ *
+ * Copyright (c) 2003 Cisco
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ *
+ * b) Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the distribution.
+ *
+ * c) Neither the name of Cisco Systems, Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Please send any bug reports or fixes you make to the
+ * email address(es):
+ *    lksctp developers <lksctp-developers@lists.sourceforge.net>
+ *
+ * Or submit a bug report through the following website:
+ *    http://www.sf.net/projects/lksctp
+ *
+ * Any bugs reported to us we will try to fix... any fixes shared will
+ * be incorporated into the next SCTP release.
+ *
+ * Written or modified by:
+ *    Randall Stewart   <rrs@cisco.com>
+ *    Sridhar Samudrala <sri@us.ibm.com>
+ */
+
+#include <ctype.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netinet/in.h>
+
+#include <stdarg.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <arpa/inet.h>
+#include <time.h>
+#include <string.h>
+#include <errno.h>
+#include <poll.h>
+#include <sys/uio.h>
+#include <netdb.h>
+
+#include <netinet/sctp.h>
+#ifdef __NetBSD__
+#include <sys/inttypes.h>
+#endif
+
+#define SCTP_CRC32C_POLY 0x1EDC6F41
+#define SCTP_CRC32C(c,d) (c=(c>>8)^sctp_crc_c[(c^(d))&0xFF])
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/* Copyright 2001, D. Otis.  Use this program, code or tables    */
+/* extracted from it, as desired without restriction.            */
+/*                                                               */
+/* 32 Bit Reflected CRC table generation for SCTP.               */
+/* To accommodate serial byte data being shifted out least       */
+/* significant bit first, the table's 32 bit words are reflected */
+/* which flips both byte and bit MS and LS positions.  The CRC   */
+/* is calculated MS bits first from the perspective of the serial*/
+/* stream.  The x^32 term is implied and the x^0 term may also   */
+/* be shown as +1.  The polynomial code used is 0x1EDC6F41.      */
+/* Castagnoli93                                                  */
+/* x^32+x^28+x^27+x^26+x^25+x^23+x^22+x^20+x^19+x^18+x^14+x^13+  */
+/* x^11+x^10+x^9+x^8+x^6+x^0                                     */
+/* Guy Castagnoli Stefan Braeuer and Martin Herrman              */
+/* "Optimization of Cyclic Redundancy-Check Codes                */
+/* with 24 and 32 Parity Bits",                                  */
+/* IEEE Transactions on Communications, Vol.41, No.6, June 1993  */
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static unsigned char buffer1[4100];
+static unsigned char buffer2[4100];
+static unsigned char buffer3[4100];
+static unsigned char buffer4[4100];
+static struct sockaddr_in bindto,got,to;
+static socklen_t len;
+
+unsigned long  sctp_crc_c[256] = {
+	0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
+	0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
+	0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
+	0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
+	0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
+	0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
+	0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
+	0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
+	0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
+	0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
+	0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
+	0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
+	0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
+	0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
+	0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
+	0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
+	0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
+	0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
+	0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
+	0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
+	0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
+	0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
+	0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
+	0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
+	0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
+	0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
+	0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
+	0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
+	0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
+	0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
+	0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
+	0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
+	0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
+	0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
+	0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
+	0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
+	0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
+	0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
+	0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
+	0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
+	0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
+	0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
+	0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
+	0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
+	0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
+	0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
+	0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
+	0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
+	0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
+	0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
+	0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
+	0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
+	0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
+	0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
+	0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
+	0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
+	0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
+	0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
+	0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
+	0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
+	0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
+	0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
+	0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
+	0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L,
+};
+
+u_int32_t
+update_crc32(u_int32_t crc32,
+	     unsigned char *buffer,
+	     unsigned int length)
+{
+	int i;
+	for (i = 0; i < length; i++) {
+		SCTP_CRC32C(crc32, buffer[i]);
+	}
+	return (crc32);
+}
+
+u_int32_t
+sctp_csum_finalize(u_int32_t crc32)
+{
+	u_int32_t result;
+#if BYTE_ORDER == BIG_ENDIAN
+	u_int8_t byte0, byte1, byte2, byte3;
+#endif
+	/* Complement the result */
+	result = ~crc32;
+#if BYTE_ORDER == BIG_ENDIAN
+	/*
+	 * For BIG-ENDIAN.. aka Motorola byte order the result is in
+	 * little-endian form. So we must manually swap the bytes. Then
+	 * we can call htonl() which does nothing...
+	 */
+	byte0 = result & 0x000000ff;
+	byte1 = (result >> 8) & 0x000000ff;
+	byte2 = (result >> 16) & 0x000000ff;
+	byte3 = (result >> 24) & 0x000000ff;
+	result = ((byte0 << 24) |
+		  (byte1 << 16) |
+		  (byte2 << 8) |
+		  byte3);
+	crc32 = htonl(result);
+#else
+	/*
+	 * For INTEL platforms the result comes out in network order.
+	 * No htonl is required or the swap above. So we optimize out
+	 * both the htonl and the manual swap above.
+	 */
+	crc32 = result;
+#endif
+	return (crc32);
+}
+
+static u_int32_t at = 468700;
+
+void
+prepare_buffers(void)
+{
+        /* Prepare buffers */
+	u_int32_t temp,*p;
+	int i;
+
+	p = (u_int32_t *)buffer1;
+	for(i=0;i<(sizeof(buffer1)/4);i++){
+		*p = at;
+		at++;
+		p++;
+	}
+	/* backup over the last int */
+	p--;
+	*p = 0;
+	temp = 0xffffffff;
+	temp = update_crc32(temp,buffer1,(sizeof(buffer1)-4));
+	*p = sctp_csum_finalize(temp);
+
+	p = (u_int32_t *)buffer2;
+	for(i=0;i<(sizeof(buffer2)/4);i++){
+		*p = at;
+		at++;
+		p++;
+	}
+	p--;
+	*p = 0;
+	temp = 0xffffffff;
+	temp = update_crc32(temp,buffer2,(sizeof(buffer2)-4));
+	*p = sctp_csum_finalize(temp);
+
+	p = (u_int32_t *)buffer3;
+	for(i=0;i<(sizeof(buffer3)/4);i++){
+		*p = at;
+		at++;
+		p++;
+	}
+	p--;
+	*p = 0;
+	temp = 0xffffffff;
+	temp = update_crc32(temp,buffer3,(sizeof(buffer3)-4));
+	*p = sctp_csum_finalize(temp);
+
+	p = (u_int32_t *)buffer4;
+	for(i=0;i<(sizeof(buffer4)/4);i++){
+		*p = at;
+		at++;
+		p++;
+	}
+	p--;
+	*p = 0;
+	temp = 0xffffffff;
+	temp = update_crc32(temp,buffer4,(sizeof(buffer4)-4));
+	*p = sctp_csum_finalize(temp);
+}
+
+static int
+my_handle_notification(int fd,char *notify_buf) {
+	union sctp_notification *snp;
+	struct sctp_assoc_change *sac;
+	struct sctp_paddr_change *spc;
+	struct sctp_remote_error *sre;
+	struct sctp_send_failed *ssf;
+	struct sctp_shutdown_event *sse;
+	int asocDown;
+	char *str;
+	char buf[256];
+	struct sockaddr_in *sin;
+	struct sockaddr_in6 *sin6;
+
+	asocDown = 0;
+	snp = (union sctp_notification *)notify_buf;
+	switch(snp->sn_header.sn_type) {
+	case SCTP_ASSOC_CHANGE:
+		sac = &snp->sn_assoc_change;
+		switch(sac->sac_state) {
+
+		case SCTP_COMM_UP:
+			str = "COMMUNICATION UP";
+			break;
+		case SCTP_COMM_LOST:
+			str = "COMMUNICATION LOST";
+			asocDown = 1;
+			break;
+		case SCTP_RESTART:
+		        str = "RESTART";
+			break;
+		case SCTP_SHUTDOWN_COMP:
+			str = "SHUTDOWN COMPLETE";
+			asocDown = 1;
+			break;
+		case SCTP_CANT_STR_ASSOC:
+			str = "CANT START ASSOC";
+			printf("EXIT:SCTP_ASSOC_CHANGE: %s, assoc=%xh\n", str,
+			       (uint32_t)sac->sac_assoc_id);
+			exit(0);
+			break;
+		default:
+			str = "UNKNOWN";
+		} /* end switch(sac->sac_state) */
+		printf("SCTP_ASSOC_CHANGE: %s, assoc=%xh\n", str,
+		       (uint32_t)sac->sac_assoc_id);
+		break;
+	case SCTP_PEER_ADDR_CHANGE:
+		spc = &snp->sn_paddr_change;
+		switch(spc->spc_state) {
+		case SCTP_ADDR_AVAILABLE:
+			str = "ADDRESS AVAILABLE";
+			break;
+		case SCTP_ADDR_UNREACHABLE:
+			str = "ADDRESS UNAVAILABLE";
+			break;
+		case SCTP_ADDR_REMOVED:
+			str = "ADDRESS REMOVED";
+			break;
+		case SCTP_ADDR_ADDED:
+			str = "ADDRESS ADDED";
+			break;
+		case SCTP_ADDR_MADE_PRIM:
+			str = "ADDRESS MADE PRIMARY";
+			break;
+		default:
+			str = "UNKNOWN";
+		} /* end switch */
+		sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
+		if (sin6->sin6_family == AF_INET6) {
+			inet_ntop(AF_INET6, (char*)&sin6->sin6_addr, buf, sizeof(buf));
+		} else {
+			sin = (struct sockaddr_in *)&spc->spc_aaddr;
+			inet_ntop(AF_INET, (char*)&sin->sin_addr, buf, sizeof(buf));
+		}
+		printf("SCTP_PEER_ADDR_CHANGE: %s, addr=%s, assoc=%xh\n", str,
+		       buf, (uint32_t)spc->spc_assoc_id);
+		break;
+	case SCTP_REMOTE_ERROR:
+		sre = &snp->sn_remote_error;
+		printf("SCTP_REMOTE_ERROR: assoc=%xh\n",
+		       (uint32_t)sre->sre_assoc_id);
+		break;
+	case SCTP_SEND_FAILED:
+		ssf = &snp->sn_send_failed;
+		printf("SCTP_SEND_FAILED: assoc=%xh\n",
+		       (uint32_t)ssf->ssf_assoc_id);
+		break;
+	case SCTP_ADAPTATION_INDICATION:
+	  {
+	    struct sctp_adaptation_event *ae;
+	    ae = &snp->sn_adaptation_event;
+	    printf("\nSCTP_adaptation_indication bits:0x%x\n",
+		   (u_int)ae->sai_adaptation_ind);
+	  }
+	  break;
+	case SCTP_PARTIAL_DELIVERY_EVENT:
+	  {
+	    struct sctp_pdapi_event *pdapi;
+	    pdapi = &snp->sn_pdapi_event;
+	    printf("SCTP_PD-API event:%u\n",
+		   pdapi->pdapi_indication);
+	    if(pdapi->pdapi_indication == 0){
+		    printf("PDI- Aborted\n");
+	    }
+	  }
+	  break;
+
+	case SCTP_SHUTDOWN_EVENT:
+                sse = &snp->sn_shutdown_event;
+		printf("SCTP_SHUTDOWN_EVENT: assoc=%xh\n",
+		       (uint32_t)sse->sse_assoc_id);
+		break;
+	default:
+		printf("Unknown notification event type=%xh\n", 
+		       snp->sn_header.sn_type);
+	} /* end switch(snp->sn_type) */
+	if(asocDown){
+		printf("Bring association back up\n");
+		len = sizeof(to);
+		if(connect(fd,(struct sockaddr *)&to,len) == -1){
+			printf("Sorry connect fails %d\n",errno);
+		}
+		return(1);
+	}
+	return(0);
+}
+
+
+	
+int
+my_sctpReadInput(int fd)
+{
+	/* receive some number of datagrams and
+	 * act on them.
+	 */
+	int sz;
+	struct msghdr msg;
+	struct iovec iov[2];
+	unsigned char from[200];
+	char readBuffer[65535];
+	char controlVector[65535];
+  
+	iov[0].iov_base = readBuffer;
+	iov[0].iov_len = sizeof(readBuffer);
+	iov[1].iov_base = NULL;
+	iov[1].iov_len = 0;
+	msg.msg_name = (caddr_t)from;
+	msg.msg_namelen = sizeof(from);
+	msg.msg_iov = iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = (caddr_t)controlVector;
+	msg.msg_controllen = sizeof(controlVector);
+	msg.msg_flags = 0;
+	errno = 0;
+	sz = recvmsg(fd,&msg,0);
+	if(sz <= 0){
+		printf("Read returns %d errno:%d control len is %zu msgflg:%x\n",
+		       sz,errno,
+		       msg.msg_controllen,msg.msg_flags);
+	}
+	if (msg.msg_flags & MSG_NOTIFICATION) {
+		return(my_handle_notification(fd,readBuffer));
+	}else{
+		printf("Huh, I got data?.. ignored (%d bytes)\n",sz);
+		return(0);
+	}
+}
+
+
+int
+clear_fds(int fd,int fd1)
+{
+	int felldown;
+	int max,notdone;
+	fd_set readfds,writefds,exceptfds;
+	struct timeval tv;
+	memset(&tv,0,sizeof(tv));
+	FD_ZERO(&readfds);
+	FD_ZERO(&writefds);
+	FD_ZERO(&exceptfds);
+	felldown = 0;
+	FD_SET(fd,&readfds);
+	FD_SET(fd1,&readfds);
+	if(fd > fd1){
+		max = fd + 1;
+	}else{
+		max = fd1 + 1;
+	}
+	notdone = 1;
+	while(notdone){
+		if (select(max, &readfds, &writefds, &exceptfds, &tv) == -1)
+			break;
+		notdone = 0;
+		if(FD_ISSET(fd,&readfds)){
+			notdone++;
+			printf("clearing fd:%d\n",fd);
+			felldown += my_sctpReadInput(fd);
+			notdone = 1;
+		}
+		if(FD_ISSET(fd1,&readfds)){
+			notdone++;
+			printf("clearing fd1:%d\n",fd1);
+			felldown += my_sctpReadInput(fd1);
+		}
+	}
+	return(felldown);
+}
+
+void
+process_out_data(int fd,int fd1)
+{
+	int notdone,x,ret;
+	while(1){
+		/* Prepare the buffers */
+		prepare_buffers();
+		/* send out the 4 buffers */
+		ret = sendto(fd,buffer1,sizeof(buffer1),0,
+			     (struct sockaddr *)&to,sizeof(to));
+		if(ret < sizeof(buffer1)){
+			printf("Gak1, error:%d ret:%d\n",errno,ret);
+		}
+
+		ret = sendto(fd1,buffer2,sizeof(buffer1),0,
+			     (struct sockaddr *)&to,sizeof(to));
+		if(ret < sizeof(buffer2)){
+			printf("Gak2, error:%d ret:%d\n",errno,ret);
+		}
+
+
+		ret = sendto(fd,buffer3,sizeof(buffer1),0,
+			     (struct sockaddr *)&to,sizeof(to));
+		if(ret < sizeof(buffer3)){
+			printf("Gak3, error:%d ret:%d\n",errno,ret);
+		}
+
+
+		ret = sendto(fd1,buffer4,sizeof(buffer1),0,
+			     (struct sockaddr *)&to,sizeof(to));
+		if(ret < sizeof(buffer4)){
+			printf("Gak4, error:%d ret:%d\n",errno,ret);
+		}
+
+		/*  now wait until we get a assoc failing */
+		notdone = 1;
+		while(notdone){
+			x = clear_fds(fd,fd1);
+			if(x){
+				notdone = 0;
+			}
+			sleep(1);
+		}
+	}
+}
+
+int
+main(int argc, char **argv)
+{
+	int i,fd,fd1;
+	char *addr=NULL;
+	uint16_t port=0;
+	int protocol_touse = IPPROTO_SCTP;
+	struct sctp_event_subscribe event = {0};
+
+	while((i= getopt(argc,argv,"p:h:")) != EOF){
+		switch(i){
+		case 'h':
+			addr = optarg;
+			break;
+		case 'p':
+			port = (uint16_t)strtol(optarg,NULL,0);
+			break;
+		};
+	}
+	memset(&to,0,sizeof(to));
+	if((addr == NULL) || (port == 0)){
+		printf("Usage: %s -h addr -p port\n", argv[0]);
+		return(-1);
+	}
+	if(inet_pton(AF_INET, addr, (void *) &to.sin_addr)){
+		//to.sin_len = sizeof(to);
+		to.sin_family = AF_INET;
+		printf("port selected is %d\n",port);
+		printf("addr %x\n",(u_int)ntohl(to.sin_addr.s_addr));
+		to.sin_port = htons(port);
+	}else{
+		printf("Can't translate the address\n");
+		return(-1);
+	}
+	/**********************socket 1 *******************/
+      	fd = socket(AF_INET, SOCK_SEQPACKET, protocol_touse);
+	if(fd == -1){
+		printf("can't open socket:%d\n",errno);
+		return(-1);
+	}
+	memset(&bindto,0,sizeof(bindto));
+	//len = bindto.sin_len = sizeof(bindto);
+	len = sizeof(bindto);
+	bindto.sin_family = AF_INET;
+	bindto.sin_port = 0;
+	if(bind(fd,(struct sockaddr *)&bindto, len) < 0){
+		printf("can't bind a socket:%d\n",errno);
+		close(fd);
+		return(-1);
+	}
+	if(getsockname(fd,(struct sockaddr *)&got,&len) < 0){
+		printf("get sockname failed err:%d\n",errno);
+		close(fd);
+		return(-1);
+	}	
+	printf("fd uses port %d\n",ntohs(got.sin_port));
+
+	/**********************socket 2 *******************/
+      	fd1 = socket(AF_INET, SOCK_SEQPACKET, protocol_touse);
+	if(fd1 == -1){
+		printf("can't open socket:%d\n",errno);
+		close(fd);
+		return(-1);
+	}
+	memset(&bindto,0,sizeof(bindto));
+	//len = bindto.sin_len = sizeof(bindto);
+	len = sizeof(bindto);
+	bindto.sin_family = AF_INET;
+	bindto.sin_port = 0;
+	if(bind(fd1,(struct sockaddr *)&bindto, len) < 0){
+		printf("can't bind a socket:%d\n",errno);
+		close(fd);
+		close(fd1);
+		return(-1);
+	}
+	if(getsockname(fd1,(struct sockaddr *)&got,&len) < 0){
+		printf("get sockname failed err:%d\n",errno);
+		close(fd);
+		close(fd1);
+		return(-1);
+	}	
+	printf("fd1 uses port %d\n",ntohs(got.sin_port));
+
+	/* enable all event notifications */
+	event.sctp_data_io_event = 1;
+	event.sctp_association_event = 1;
+	event.sctp_address_event = 1;
+	event.sctp_send_failure_event = 1;
+	event.sctp_peer_error_event = 1;
+	event.sctp_shutdown_event = 1;
+	event.sctp_partial_delivery_event = 1;
+	event.sctp_adaptation_layer_event = 1;
+	if (setsockopt(fd, IPPROTO_SCTP, 
+		       SCTP_EVENTS, &event, 
+		       sizeof(event)) != 0) {
+		printf("Gak, can't set events errno:%d\n",errno);
+		exit(0);
+	}
+	if (setsockopt(fd1, IPPROTO_SCTP, 
+		       SCTP_EVENTS, &event, 
+		       sizeof(event)) != 0) {
+		printf("Gak, can't set events errno:%d\n",errno);
+		exit(0);
+	}
+
+	if(connect(fd,(struct sockaddr *)&to,len) == -1){
+		printf("Sorry connect fails %d\n",errno);
+		close(fd);
+		return(-1);
+	}
+	if(connect(fd1,(struct sockaddr *)&to,len) == -1){
+		printf("Sorry connect fails %d\n",errno);
+		close(fd);
+		return(-1);
+	}
+	printf("Connected\n");
+	clear_fds(fd,fd1);
+	process_out_data(fd,fd1);
+
+	return(0);
+}
+