Actually send (random) data.

[jam] / jam.c

diff --git a/jam.c b/jam.c
index 80737a758de8f082aa74bcb51a58c20a75625ee1..1da8fc84f282189882fe5a4eddc6ff732bbd50df 100644 (file)
--- a/jam.c
+++ b/jam.c
@@ -20,12 +20,14 @@ unsigned num_sources = 0;
 unsigned room_sources = 0;
 
 unsigned num_senders = 128;
+unsigned do_listen = 1;
 
 const static struct option longopts[] = {
        { "source-list", required_argument, NULL, 's' },
        { "destination-list", required_argument, NULL, 'd' },
        { "num-senders", required_argument, NULL, 'n' },
        { "port", required_argument, NULL, 'p' },
+       { "sender-only", no_argument, NULL, 'o' },
        { NULL, 0, NULL, 0 }
 };
 
@@ -101,7 +103,7 @@ void parse_options(int argc, char **argv)
        int option_index = 0;
 
        for ( ;; ) {
-               int c = getopt_long(argc, argv, "s:d:n:p:", longopts, &option_index); 
+               int c = getopt_long(argc, argv, "s:d:n:p:o", longopts, &option_index); 
                switch (c) {
                case 's':
                        read_ip_list(optarg, &sources, &num_sources, &room_sources);
@@ -115,6 +117,9 @@ void parse_options(int argc, char **argv)
                case 'p':
                        port = atoi(optarg);
                        break;
+               case 'o':
+                       do_listen = 0;
+                       break;
                case -1:
                        return;       // end of argument list
                default:
@@ -128,6 +133,10 @@ void *sender_worker(void *arg)
 {
        unsigned i;
        int sock;
+       char buf[65536];
+
+       for (i = 0; i < 65536; ++i)
+               buf[i] = rand() & 0xff;
 
        for (i = 0; i < 1000; ++i) {
                unsigned src_num = (unsigned)(num_sources * gen_uniform_random());
@@ -156,7 +165,23 @@ void *sender_worker(void *arg)
                
                fprintf(stderr, "connected\n");
 
-               // FIXME: send data here
+               while (num_bytes > 0) {
+                       unsigned bytes_to_send = num_bytes;
+                       unsigned ret;
+
+                       if (bytes_to_send > 65536) {
+                               bytes_to_send = 65536;  
+                       }
+
+                       ret = send(sock, buf, bytes_to_send, MSG_NOSIGNAL);
+                       if (ret == -1) {
+                               perror("send()");
+                               exit(1);
+                       }
+
+                       num_bytes -= ret;
+               }
+               fprintf(stderr, "sent\n");
 
                close(sock);
        }
@@ -231,7 +256,9 @@ int main(int argc, char **argv)
                fprintf(stderr, "Missing or empty source or destination host list. Aborting.\n");
        }
 
-       server_sock = get_server_socket(port);
+       if (do_listen) {
+               server_sock = get_server_socket(port);
+       }
        
        printf("Sending data on port %u from %u sources to %u destinations.\n\n",
                port, num_sources, num_destinations);
@@ -267,6 +294,11 @@ int main(int argc, char **argv)
         * thread for each (which will just gobble up the data until
         * we're done).
         */
+       if (!do_listen) {
+               sleep(3600);
+               exit(0);
+       }
+
        for ( ;; ) {
                struct sockaddr_in addr;
                socklen_t addr_len = sizeof(addr);