aboutsummaryrefslogtreecommitdiff
path: root/programs/echo_server.c
diff options
context:
space:
mode:
Diffstat (limited to 'programs/echo_server.c')
-rw-r--r--programs/echo_server.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/programs/echo_server.c b/programs/echo_server.c
new file mode 100644
index 00000000..38fa6f41
--- /dev/null
+++ b/programs/echo_server.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2011-2013 Michael Tuexen
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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.
+ */
+
+/*
+ * Usage: echo_server [local_encaps_port] [remote_encaps_port]
+ *
+ * Example
+ * Server: $ ./echo_server 11111 22222
+ * Client: $ ./client 127.0.0.1 7 0 22222 11111
+ */
+
+#ifdef _WIN32
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#ifndef _WIN32
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+#include <usrsctp.h>
+#include "programs_helper.h"
+
+#define PORT 7
+#define BUFFER_SIZE 10240
+#define SLEEP 1
+
+const int use_cb = 0;
+
+static int
+receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
+ size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
+{
+ char namebuf[INET6_ADDRSTRLEN];
+ const char *name;
+ uint16_t port;
+
+ if (data) {
+ if (flags & MSG_NOTIFICATION) {
+ printf("Notification of length %d received.\n", (int)datalen);
+ } else {
+ switch (addr.sa.sa_family) {
+#ifdef INET
+ case AF_INET:
+ name = inet_ntop(AF_INET, &addr.sin.sin_addr, namebuf, INET_ADDRSTRLEN);
+ port = ntohs(addr.sin.sin_port);
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ name = inet_ntop(AF_INET6, &addr.sin6.sin6_addr, namebuf, INET6_ADDRSTRLEN),
+ port = ntohs(addr.sin6.sin6_port);
+ break;
+#endif
+ case AF_CONN:
+#ifdef _WIN32
+ if (_snprintf(namebuf, INET6_ADDRSTRLEN, "%p", addr.sconn.sconn_addr) < 0) {
+#else
+ if (snprintf(namebuf, INET6_ADDRSTRLEN, "%p", addr.sconn.sconn_addr) < 0) {
+#endif
+ namebuf[0] = '\0';
+ }
+ name = namebuf;
+ port = ntohs(addr.sconn.sconn_port);
+ break;
+ default:
+ name = NULL;
+ port = 0;
+ break;
+ }
+ printf("Msg of length %d received from %s:%u on stream %u with SSN %u and TSN %u, PPID %u, context %u.\n",
+ (int)datalen,
+ name,
+ port,
+ rcv.rcv_sid,
+ rcv.rcv_ssn,
+ rcv.rcv_tsn,
+ ntohl(rcv.rcv_ppid),
+ rcv.rcv_context);
+ if (flags & MSG_EOR) {
+ struct sctp_sndinfo snd_info;
+
+ snd_info.snd_sid = rcv.rcv_sid;
+ snd_info.snd_flags = 0;
+ if (rcv.rcv_flags & SCTP_UNORDERED) {
+ snd_info.snd_flags |= SCTP_UNORDERED;
+ }
+ snd_info.snd_ppid = rcv.rcv_ppid;
+ snd_info.snd_context = 0;
+ snd_info.snd_assoc_id = rcv.rcv_assoc_id;
+ if (usrsctp_sendv(sock, data, datalen, NULL, 0, &snd_info, sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
+ perror("sctp_sendv");
+ }
+ }
+ }
+ free(data);
+ }
+ return (1);
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct socket *sock;
+ struct sockaddr_in6 addr;
+ struct sctp_udpencaps encaps;
+ struct sctp_event event;
+ uint16_t event_types[] = {SCTP_ASSOC_CHANGE,
+ SCTP_PEER_ADDR_CHANGE,
+ SCTP_REMOTE_ERROR,
+ SCTP_SHUTDOWN_EVENT,
+ SCTP_ADAPTATION_INDICATION,
+ SCTP_PARTIAL_DELIVERY_EVENT};
+ unsigned int i;
+ struct sctp_assoc_value av;
+ const int on = 1;
+ ssize_t n;
+ int flags;
+ socklen_t from_len;
+ char buffer[BUFFER_SIZE];
+ char name[INET6_ADDRSTRLEN];
+ socklen_t infolen;
+ struct sctp_rcvinfo rcv_info;
+ unsigned int infotype;
+
+ if (argc > 1) {
+ usrsctp_init(atoi(argv[1]), NULL, debug_printf_stack);
+ } else {
+ usrsctp_init(9899, NULL, debug_printf_stack);
+ }
+#ifdef SCTP_DEBUG
+ usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
+#endif
+ usrsctp_sysctl_set_sctp_blackhole(2);
+ usrsctp_sysctl_set_sctp_no_csum_on_loopback(0);
+
+ if ((sock = usrsctp_socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP, use_cb?receive_cb:NULL, NULL, 0, NULL)) == NULL) {
+ perror("usrsctp_socket");
+ }
+ if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_I_WANT_MAPPED_V4_ADDR, (const void*)&on, (socklen_t)sizeof(int)) < 0) {
+ perror("usrsctp_setsockopt SCTP_I_WANT_MAPPED_V4_ADDR");
+ }
+ memset(&av, 0, sizeof(struct sctp_assoc_value));
+ av.assoc_id = SCTP_ALL_ASSOC;
+ av.assoc_value = 47;
+
+ if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_CONTEXT, (const void*)&av, (socklen_t)sizeof(struct sctp_assoc_value)) < 0) {
+ perror("usrsctp_setsockopt SCTP_CONTEXT");
+ }
+ if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_RECVRCVINFO, &on, sizeof(int)) < 0) {
+ perror("usrsctp_setsockopt SCTP_RECVRCVINFO");
+ }
+ if (argc > 2) {
+ memset(&encaps, 0, sizeof(struct sctp_udpencaps));
+ encaps.sue_address.ss_family = AF_INET6;
+ encaps.sue_port = htons(atoi(argv[2]));
+ if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, (const void*)&encaps, (socklen_t)sizeof(struct sctp_udpencaps)) < 0) {
+ perror("usrsctp_setsockopt SCTP_REMOTE_UDP_ENCAPS_PORT");
+ }
+ }
+ memset(&event, 0, sizeof(event));
+ event.se_assoc_id = SCTP_FUTURE_ASSOC;
+ event.se_on = 1;
+ for (i = 0; i < (unsigned int)(sizeof(event_types)/sizeof(uint16_t)); i++) {
+ event.se_type = event_types[i];
+ if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event)) < 0) {
+ perror("usrsctp_setsockopt SCTP_EVENT");
+ }
+ }
+ memset((void *)&addr, 0, sizeof(struct sockaddr_in6));
+#ifdef HAVE_SIN6_LEN
+ addr.sin6_len = sizeof(struct sockaddr_in6);
+#endif
+ addr.sin6_family = AF_INET6;
+ addr.sin6_port = htons(PORT);
+ addr.sin6_addr = in6addr_any;
+ if (usrsctp_bind(sock, (struct sockaddr *)&addr, sizeof(struct sockaddr_in6)) < 0) {
+ perror("usrsctp_bind");
+ }
+ if (usrsctp_listen(sock, 1) < 0) {
+ perror("usrsctp_listen");
+ }
+ while (1) {
+ if (use_cb) {
+#ifdef _WIN32
+ Sleep(SLEEP * 1000);
+#else
+ sleep(SLEEP);
+#endif
+ } else {
+ from_len = (socklen_t)sizeof(struct sockaddr_in6);
+ flags = 0;
+ infolen = (socklen_t)sizeof(struct sctp_rcvinfo);
+ n = usrsctp_recvv(sock, (void*)buffer, BUFFER_SIZE, (struct sockaddr *) &addr, &from_len, (void *)&rcv_info,
+ &infolen, &infotype, &flags);
+ if (n > 0) {
+ if (flags & MSG_NOTIFICATION) {
+ printf("Notification of length %llu received.\n", (unsigned long long)n);
+ } else {
+ if (infotype == SCTP_RECVV_RCVINFO) {
+ printf("Msg of length %llu received from %s:%u on stream %u with SSN %u and TSN %u, PPID %u, context %u, complete %d.\n",
+ (unsigned long long)n,
+ inet_ntop(AF_INET6, &addr.sin6_addr, name, INET6_ADDRSTRLEN), ntohs(addr.sin6_port),
+ rcv_info.rcv_sid,
+ rcv_info.rcv_ssn,
+ rcv_info.rcv_tsn,
+ ntohl(rcv_info.rcv_ppid),
+ rcv_info.rcv_context,
+ (flags & MSG_EOR) ? 1 : 0);
+ if (flags & MSG_EOR) {
+ struct sctp_sndinfo snd_info;
+
+ snd_info.snd_sid = rcv_info.rcv_sid;
+ snd_info.snd_flags = 0;
+ if (rcv_info.rcv_flags & SCTP_UNORDERED) {
+ snd_info.snd_flags |= SCTP_UNORDERED;
+ }
+ snd_info.snd_ppid = rcv_info.rcv_ppid;
+ snd_info.snd_context = 0;
+ snd_info.snd_assoc_id = rcv_info.rcv_assoc_id;
+ if (usrsctp_sendv(sock, buffer, (size_t)n, NULL, 0, &snd_info, (socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
+ perror("sctp_sendv");
+ }
+ }
+ } else {
+ printf("Msg of length %llu received from %s:%u, complete %d.\n",
+ (unsigned long long)n,
+ inet_ntop(AF_INET6, &addr.sin6_addr, name, INET6_ADDRSTRLEN), ntohs(addr.sin6_port),
+ (flags & MSG_EOR) ? 1 : 0);
+ }
+ }
+ } else {
+ break;
+ }
+ }
+ }
+ usrsctp_close(sock);
+ while (usrsctp_finish() != 0) {
+#ifdef _WIN32
+ Sleep(SLEEP * 1000);
+#else
+ sleep(SLEEP);
+#endif
+ }
+ return (0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 06:01:01 +0000