Handle channel closure during a receive callback when the ringbuffer wraps.

[utcp] / test.c

diff --git a/test.c b/test.c
index 2784649bb5ef8a8767b079cb5bf2797099cb9386..2a273de70463dbe4f39117cc50ed438dc46c4834 100644 (file)
--- a/test.c
+++ b/test.c
@@ -17,41 +17,48 @@
 #define DIR_READ 1
 #define DIR_WRITE 2
 
-struct utcp_connection *c;
-int dir = DIR_READ | DIR_WRITE;
-bool running = true;
-long inpktno;
-long outpktno;
-long dropfrom;
-long dropto;
-double reorder;
-long reorder_dist = 10;
-double dropin;
-double dropout;
-long total_out;
-long total_in;
-FILE *reference;
-long mtu = 1300;
-
-char *reorder_data;
-size_t reorder_len;
-int reorder_countdown;
+static struct utcp_connection *c;
+static int dir = DIR_READ | DIR_WRITE;
+static long inpktno;
+static long outpktno;
+static long dropfrom;
+static long dropto;
+static double reorder;
+static long reorder_dist = 10;
+static double dropin;
+static double dropout;
+static long total_out;
+static long total_in;
+static FILE *reference;
+static long mtu;
+static long bufsize;
+
+static char *reorder_data;
+static size_t reorder_len;
+static int reorder_countdown;
 
 #if UTCP_DEBUG
-void debug(const char *format, ...) {
-       struct timeval now;
-       gettimeofday(&now, NULL);
-       fprintf(stderr, "%lu.%lu ", now.tv_sec, now.tv_usec / 1000);
+static void debug(const char *format, ...) {
+       struct timespec tv;
+       char buf[1024];
+       int len;
+
+       clock_gettime(CLOCK_REALTIME, &tv);
+       len = snprintf(buf, sizeof(buf), "%ld.%06lu ", (long)tv.tv_sec, tv.tv_nsec / 1000);
        va_list ap;
        va_start(ap, format);
-       vfprintf(stderr, format, ap);
+       len += vsnprintf(buf + len, sizeof(buf) - len, format, ap);
        va_end(ap);
+
+       if(len > 0 && (size_t)len < sizeof(buf)) {
+               fwrite(buf, len, 1, stderr);
+       }
 }
 #else
 #define debug(...) do {} while(0)
 #endif
 
-ssize_t do_recv(struct utcp_connection *c, const void *data, size_t len) {
+static ssize_t do_recv(struct utcp_connection *c, const void *data, size_t len) {
        (void)c;
 
        if(!data || !len) {
@@ -83,14 +90,20 @@ ssize_t do_recv(struct utcp_connection *c, const void *data, size_t len) {
        return write(1, data, len);
 }
 
-void do_accept(struct utcp_connection *nc, uint16_t port) {
+static void do_accept(struct utcp_connection *nc, uint16_t port) {
        (void)port;
        utcp_accept(nc, do_recv, NULL);
        c = nc;
+
+       if(bufsize) {
+               utcp_set_sndbuf(c, bufsize);
+               utcp_set_rcvbuf(c, bufsize);
+       }
+
        utcp_set_accept_cb(c->utcp, NULL, NULL);
 }
 
-ssize_t do_send(struct utcp *utcp, const void *data, size_t len) {
+static ssize_t do_send(struct utcp *utcp, const void *data, size_t len) {
        int s = *(int *)utcp->priv;
        outpktno++;
 
@@ -134,6 +147,21 @@ ssize_t do_send(struct utcp *utcp, const void *data, size_t len) {
        return result;
 }
 
+static void set_mtu(struct utcp *u, int s) {
+       if(!mtu) {
+               socklen_t optlen = sizeof(mtu);
+               getsockopt(s, IPPROTO_IP, IP_MTU, &mtu, &optlen);
+       }
+
+       if(!mtu || mtu == 65535) {
+               mtu = 1500;
+       }
+
+       debug("Using MTU %lu\n", mtu);
+
+       utcp_set_mtu(u, mtu ? mtu - 28 : 1300);
+}
+
 int main(int argc, char *argv[]) {
        srand(time(NULL));
        srand48(time(NULL));
@@ -183,6 +211,10 @@ int main(int argc, char *argv[]) {
                mtu = atoi(getenv("MTU"));
        }
 
+       if(getenv("BUFSIZE")) {
+               bufsize = atoi(getenv("BUFSIZE"));
+       }
+
        char *reference_filename = getenv("REFERENCE");
 
        if(reference_filename) {
@@ -240,11 +272,16 @@ int main(int argc, char *argv[]) {
                return 1;
        }
 
-       utcp_set_mtu(u, mtu);
        utcp_set_user_timeout(u, 10);
 
        if(!server) {
+               set_mtu(u, s);
                c = utcp_connect_ex(u, 1, do_recv, NULL, flags);
+
+               if(bufsize) {
+                       utcp_set_sndbuf(c, bufsize);
+                       utcp_set_rcvbuf(c, bufsize);
+               }
        }
 
        struct pollfd fds[2] = {
@@ -254,7 +291,7 @@ int main(int argc, char *argv[]) {
 
        char buf[102400];
 
-       struct timeval timeout = utcp_timeout(u);
+       struct timespec timeout = utcp_timeout(u);
 
        while(!connected || utcp_is_active(u)) {
                size_t max = c ? utcp_get_sndbuf_free(c) : 0;
@@ -267,7 +304,7 @@ int main(int argc, char *argv[]) {
                        max = read_size;
                }
 
-               int timeout_ms = timeout.tv_sec * 1000 + timeout.tv_usec / 1000 + 1;
+               int timeout_ms = timeout.tv_sec * 1000 + timeout.tv_nsec / 1000000 + 1;
 
                debug("polling, dir = %d, timeout = %d\n", dir, timeout_ms);
 
@@ -279,8 +316,8 @@ int main(int argc, char *argv[]) {
 
                if(fds[0].revents) {
                        fds[0].revents = 0;
-                       debug("stdin\n");
                        ssize_t len = read(0, buf, max);
+                       debug("stdin %zd\n", len);
 
                        if(len <= 0) {
                                fds[0].fd = -1;
@@ -308,20 +345,22 @@ int main(int argc, char *argv[]) {
 
                if(fds[1].revents) {
                        fds[1].revents = 0;
-                       debug("netin\n");
                        struct sockaddr_storage ss;
                        socklen_t sl = sizeof(ss);
                        int len = recvfrom(s, buf, sizeof(buf), MSG_DONTWAIT, (struct sockaddr *)&ss, &sl);
+                       debug("netin %zu\n", len);
 
                        if(len <= 0) {
                                debug("Error receiving UDP packet: %s\n", strerror(errno));
                                break;
                        }
 
-                       if(!connected)
+                       if(!connected) {
                                if(!connect(s, (struct sockaddr *)&ss, sl)) {
                                        connected = true;
+                                       set_mtu(u, s);
                                }
+                       }
 
                        inpktno++;