1 files changed, 30 insertions, 0 deletions
diff --git a/lib/net.c b/lib/net.c
index 5d3ea4a..48d0a5f 100644
--- a/lib/net.c
+++ b/lib/net.c
@@ -12,3 +12,33 @@ void xsetsockopt(int fd, int level, int opt, void *val, socklen_t len)
 {
   if (-1 == setsockopt(fd, level, opt, val, len)) perror_exit("setsockopt");
 }
+
+int xconnect(char *host, char *port, int family, int socktype, int protocol,
+             int flags)
+{
+  struct addrinfo info, *ai, *ai2;
+  int fd;
+
+  memset(&info, 0, sizeof(struct addrinfo));
+  info.ai_family = family;
+  info.ai_socktype = socktype;
+  info.ai_protocol = protocol;
+  info.ai_flags = flags;
+
+  fd = getaddrinfo(host, port, &info, &ai);
+  if (fd || !ai)
+    error_exit("Connect '%s%s%s': %s", host, port ? ":" : "", port ? port : "",
+      fd ? gai_strerror(fd) : "not found");
+
+  // Try all the returned addresses. Report errors if last entry can't connect.
+  for (ai2 = ai; ai; ai = ai->ai_next) {
+    fd = (ai->ai_next ? socket : xsocket)(ai->ai_family, ai->ai_socktype,
+      ai->ai_protocol);
+    if (!connect(fd, ai->ai_addr, ai->ai_addrlen)) break;
+    else if (!ai2->ai_next) perror_exit("connect");
+    close(fd);
+  }
+  freeaddrinfo(ai2);
+
+  return fd;
+}