1 files changed, 102 insertions, 0 deletions
diff --git a/lib/nonblock.c b/lib/nonblock.c
new file mode 100644
index 000000000..d5a32a9e2
--- /dev/null
+++ b/lib/nonblock.c
@@ -0,0 +1,102 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+
+#include "setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#if (defined(HAVE_IOCTL_FIONBIO) && defined(NETWARE))
+#include <sys/filio.h>
+#endif
+#ifdef VMS
+#include <in.h>
+#include <inet.h>
+#endif
+
+#include "nonblock.h"
+
+/*
+ * curlx_nonblock() set the given socket to either blocking or non-blocking
+ * mode based on the 'nonblock' boolean argument. This function is highly
+ * portable.
+ */
+int curlx_nonblock(curl_socket_t sockfd,    /* operate on this */
+                   int nonblock   /* TRUE or FALSE */)
+{
+#if defined(USE_BLOCKING_SOCKETS)
+
+  return 0; /* returns success */
+
+#elif defined(HAVE_FCNTL_O_NONBLOCK)
+
+  /* most recent unix versions */
+  int flags;
+  flags = fcntl(sockfd, F_GETFL, 0);
+  if(FALSE != nonblock)
+    return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
+  else
+    return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
+
+#elif defined(HAVE_IOCTL_FIONBIO)
+
+  /* older unix versions */
+  int flags;
+  flags = nonblock;
+  return ioctl(sockfd, FIONBIO, &flags);
+
+#elif defined(HAVE_IOCTLSOCKET_FIONBIO)
+
+  /* Windows */
+  unsigned long flags;
+  flags = nonblock;
+  return ioctlsocket(sockfd, FIONBIO, &flags);
+
+#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
+
+  /* Amiga */
+  return IoctlSocket(sockfd, FIONBIO, (long)nonblock);
+
+#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
+
+  /* BeOS */
+  long b = nonblock ? 1 : 0;
+  return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
+
+#else
+#  error "no non-blocking method was found/used/set"
+#endif
+}