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1lusca/sctptest.c

Forked from zonque/sctptest.c
Created May 23, 2022 19:43
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Revisions

  1. @zonque zonque revised this gist Oct 5, 2015. 1 changed file with 24 additions and 26 deletions.
    50 changes: 24 additions & 26 deletions sctptest.c
    View file
    Original file line number Diff line number Diff line change
    @@ -24,12 +24,12 @@
    #define MY_PORT_NUM 62324

    static void die(const char *s) {
    perror(s);
    exit(1);
    perror(s);
    exit(1);
    }

    static int server(void) {
    int listen_sock, conn_sock, flags, ret, in;
    static void server(void) {
    int listen_fd, conn_fd, flags, ret, in;
    struct sctp_sndrcvinfo sndrcvinfo;
    struct sockaddr_in servaddr = {
    .sin_family = AF_INET,
    @@ -42,19 +42,19 @@ static int server(void) {
    .sinit_max_attempts = 4,
    };

    listen_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
    if (listen_sock < 0)
    listen_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
    if (listen_fd < 0)
    die("socket");

    ret = bind(listen_sock, (struct sockaddr *) &servaddr, sizeof(servaddr));
    ret = bind(listen_fd, (struct sockaddr *) &servaddr, sizeof(servaddr));
    if (ret < 0)
    die("bind");

    ret = setsockopt(listen_sock, IPPROTO_SCTP, SCTP_INITMSG, &initmsg, sizeof(initmsg));
    ret = setsockopt(listen_fd, IPPROTO_SCTP, SCTP_INITMSG, &initmsg, sizeof(initmsg));
    if (ret < 0)
    die("setsockopt");

    ret = listen(listen_sock, initmsg.sinit_max_instreams);
    ret = listen(listen_fd, initmsg.sinit_max_instreams);
    if (ret < 0)
    die("listen");

    @@ -64,55 +64,53 @@ static int server(void) {
    printf("Waiting for connection\n");
    fflush(stdout);

    conn_sock = accept(listen_sock, (struct sockaddr *) NULL, NULL);
    if(conn_sock < 0)
    conn_fd = accept(listen_fd, (struct sockaddr *) NULL, NULL);
    if(conn_fd < 0)
    die("accept()");

    printf("New client connected\n");
    fflush(stdout);

    in = sctp_recvmsg(conn_sock, buffer, sizeof(buffer), NULL, 0, &sndrcvinfo, &flags);
    in = sctp_recvmsg(conn_fd, buffer, sizeof(buffer), NULL, 0, &sndrcvinfo, &flags);
    if (in > 0) {
    printf("Received data: %s\n", buffer);
    fflush(stdout);
    }

    close(conn_sock);
    close(conn_fd);
    }

    return 0;
    }

    static int client(void) {
    int conn_sock, ret;
    static void client(void) {
    int conn_fd, ret;
    const char *msg = "Hello, Server!";
    struct sockaddr_in servaddr = {
    .sin_family = AF_INET,
    .sin_port = htons(MY_PORT_NUM),
    .sin_addr.s_addr = inet_addr("127.0.0.1"),
    };

    conn_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
    if (conn_sock < 0)
    conn_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
    if (conn_fd < 0)
    die("socket()");

    ret = connect(conn_sock, (struct sockaddr *) &servaddr, sizeof(servaddr));
    ret = connect(conn_fd, (struct sockaddr *) &servaddr, sizeof(servaddr));
    if (ret < 0)
    die("connect()");

    ret = sctp_sendmsg(conn_sock, (void *) msg, strlen(msg) + 1, NULL, 0, 0, 0, 0, 0, 0 );
    ret = sctp_sendmsg(conn_fd, (void *) msg, strlen(msg) + 1, NULL, 0, 0, 0, 0, 0, 0 );
    if (ret < 0)
    die("sctp_sendmsg");

    close(conn_sock);

    return 0;
    close(conn_fd);
    }

    int main(int argc, char **argv) {

    if (strstr(basename(argv[0]), "server"))
    return server();
    server();
    else
    client();

    return client();
    return 0;
    }
  2. @zonque zonque revised this gist Oct 5, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sctptest.c
    View file
    Original file line number Diff line number Diff line change
    @@ -100,7 +100,7 @@ static int client(void) {
    if (ret < 0)
    die("connect()");

    ret = sctp_sendmsg(conn_sock, (void *) msg, strlen(msg), NULL, 0, 0, 0, 0, 0, 0 );
    ret = sctp_sendmsg(conn_sock, (void *) msg, strlen(msg) + 1, NULL, 0, 0, 0, 0, 0, 0 );
    if (ret < 0)
    die("sctp_sendmsg");

  3. @zonque zonque created this gist Oct 5, 2015.
    118 changes: 118 additions & 0 deletions sctptest.c
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,118 @@
    /*
    * Compile:
    *
    * gcc sctptest.c -o server -lsctp -Wall
    * ln -s server client
    *
    * Invoke:
    *
    * ./client
    * ./server
    */

    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <unistd.h>
    #include <libgen.h>
    #include <sys/socket.h>
    #include <sys/types.h>
    #include <netinet/in.h>
    #include <netinet/sctp.h>
    #include <arpa/inet.h>

    #define MY_PORT_NUM 62324

    static void die(const char *s) {
    perror(s);
    exit(1);
    }

    static int server(void) {
    int listen_sock, conn_sock, flags, ret, in;
    struct sctp_sndrcvinfo sndrcvinfo;
    struct sockaddr_in servaddr = {
    .sin_family = AF_INET,
    .sin_addr.s_addr = htonl(INADDR_ANY),
    .sin_port = htons(MY_PORT_NUM),
    };
    struct sctp_initmsg initmsg = {
    .sinit_num_ostreams = 5,
    .sinit_max_instreams = 5,
    .sinit_max_attempts = 4,
    };

    listen_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
    if (listen_sock < 0)
    die("socket");

    ret = bind(listen_sock, (struct sockaddr *) &servaddr, sizeof(servaddr));
    if (ret < 0)
    die("bind");

    ret = setsockopt(listen_sock, IPPROTO_SCTP, SCTP_INITMSG, &initmsg, sizeof(initmsg));
    if (ret < 0)
    die("setsockopt");

    ret = listen(listen_sock, initmsg.sinit_max_instreams);
    if (ret < 0)
    die("listen");

    for (;;) {
    char buffer[1024];

    printf("Waiting for connection\n");
    fflush(stdout);

    conn_sock = accept(listen_sock, (struct sockaddr *) NULL, NULL);
    if(conn_sock < 0)
    die("accept()");

    printf("New client connected\n");
    fflush(stdout);

    in = sctp_recvmsg(conn_sock, buffer, sizeof(buffer), NULL, 0, &sndrcvinfo, &flags);
    if (in > 0) {
    printf("Received data: %s\n", buffer);
    fflush(stdout);
    }

    close(conn_sock);
    }

    return 0;
    }

    static int client(void) {
    int conn_sock, ret;
    const char *msg = "Hello, Server!";
    struct sockaddr_in servaddr = {
    .sin_family = AF_INET,
    .sin_port = htons(MY_PORT_NUM),
    .sin_addr.s_addr = inet_addr("127.0.0.1"),
    };

    conn_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
    if (conn_sock < 0)
    die("socket()");

    ret = connect(conn_sock, (struct sockaddr *) &servaddr, sizeof(servaddr));
    if (ret < 0)
    die("connect()");

    ret = sctp_sendmsg(conn_sock, (void *) msg, strlen(msg), NULL, 0, 0, 0, 0, 0, 0 );
    if (ret < 0)
    die("sctp_sendmsg");

    close(conn_sock);

    return 0;
    }

    int main(int argc, char **argv) {

    if (strstr(basename(argv[0]), "server"))
    return server();

    return client();
    }