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<TITLE> [Mono-bugs] [Bug 39178][Nor] Changed - UdpClient.Connect fails with broadcast address
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<H1>[Mono-bugs] [Bug 39178][Nor] Changed - UdpClient.Connect fails with broadcast address
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<B>bugzilla-daemon@rocky.ximian.com
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<A HREF="mailto:bugzilla-daemon%40rocky.ximian.com"
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TITLE="[Mono-bugs] [Bug 39178][Nor] Changed - UdpClient.Connect fails with broadcast address">bugzilla-daemon@rocky.ximian.com
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<I>Tue, 11 Mar 2003 06:46:30 -0500 (EST)</I>
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<PRE>Please do not reply to this email- if you want to comment on the bug, go to the
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URL shown below and enter your comments there.
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Changed by <A HREF="mailto:dick@ximian.com.">dick@ximian.com.</A>
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<A HREF="http://bugzilla.ximian.com/show_bug.cgi?id=39178">http://bugzilla.ximian.com/show_bug.cgi?id=39178</A>
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--- shadow/39178 Thu Mar 6 11:44:06 2003
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+++ shadow/39178.tmp.6634 Tue Mar 11 06:46:30 2003
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@@ -67,6 +67,47 @@
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Client.SetSocketOption(SocketOptionLevel.Socket,
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SocketOptionName.Broadcast, 1);
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before calling Connect.
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(Client property = the Socket (it's protected in UdpClient))
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+
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+------- Additional Comments From <A HREF="mailto:dick@ximian.com">dick@ximian.com</A> 2003-03-11 06:46 -------
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+Just for reference, I thought I'd added this before but I must have
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+forgotten to:
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+
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+<Dick> EINTR? sounds more like EACCES
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+<Dick> System.Net.Sockets.SocketException: Access denied
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+<Dick> +in (unmanaged) mono(mono_raise_exception+0x20) [0x80c14f4]
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+<Dick> +in (unmanaged) mono
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+<Dick> +(ves_icall_System_Net_Sockets_Socket_Connect_internal+0x7a)
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+[0x80dbef6]
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+<Dick> "EACCES, EPERM
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+<Dick> The user tried to connect to a broadcast address
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+<Dick> without having the socket broadcast flag enabled or
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+<Dick> the connection request failed because of a local
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+<Dick> firewall rule.
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+<Dick> "
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+<gonzalo> i saw a errno=4 with gdb
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+<gonzalo> #define EINTR 4 /* Interrupted system
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+call */
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+<Dick> #define EACCES 13 /* Permission denied */
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+<Dick> 321 if(ret==-1) {
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+<Dick> (gdb) print errno
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+<Dick> $2 = 4
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+<Dick> (gdb) n
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+<Dick> 322 gint errnum = errno;
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+<Dick> (gdb)
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+<Dick> 327 errnum = errno_to_WSA (errnum,
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+G_GNUC_PRETTY_FUNCTION);
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+<Dick> (gdb) s
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+<Dick> errno_to_WSA (code=13, function_name=0x8190c73 "_wapi_connect")
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+at error.c:62
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+<Dick> 62 gint result = -1;
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+<Dick> looks like some optimisation has shuffled errno assigning around
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+<Dick> there doesnt seem to be any way of setting SO_BROADCAST from
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+the class libraries, so i guess we need to see if we get EACCESS and
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+try setting it there
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+<gonzalo> btw, it works under mono/windows
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+<Dick> yeah, its the library or the kernel denying you access for
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+broadcast addresses
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+
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</PRE>
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