X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/8a7ccdfe933e3c22b38c029c07450a6c6f3b25ec..95ceb9eae3ff08162d7e17be5ce82090d78cb269:/tests/udplog.c

diff --git a/tests/udplog.c b/tests/udplog.c
index eb87651..0aa8f59 100644
--- a/tests/udplog.c
+++ b/tests/udplog.c
@@ -78,6 +78,8 @@ int main(int argc, char **argv) {
     struct sockaddr_in6 sin6;
   } sa;
   socklen_t len;
+  fd_set fds;
+  struct timeval tv;
   static const struct addrinfo pref = {
     0,				/* ai_flags */
     AF_UNSPEC,			/* ai_family */
@@ -110,9 +112,17 @@ int main(int argc, char **argv) {
   if(!(ai = get_address(&a, &pref, &name)))
     exit(1);
   fd = xsocket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+  nonblock(fd);
   if(bind(fd, ai->ai_addr, ai->ai_addrlen) < 0)
     fatal(errno, "error binding to %s", name);
   while(getppid() != 1) {
+    /* Wait for something to happen.  We don't just block forever in recvfrom()
+     * as otherwise we'd never die if the parent terminated uncontrolledly. */
+    FD_ZERO(&fds);
+    FD_SET(fd, &fds);
+    tv.tv_sec = 1;
+    tv.tv_usec = 0;
+    select(fd + 1, &fds, 0, 0, &tv);
     len = sizeof sa;
     n = recvfrom(fd, buffer, sizeof buffer, 0, &sa.sa, &len);
     if(n < 0) {