public ReceivedMessage RecvMsg ()
{
// int r = 0;
//
// do {
// r = (int)recvmsg (Handle, bufP, flags);
// } while (r < 0 && UnixError.ShouldRetry);
//
// if (r < 0)
// throw UnixError.GetLastUnixException ();
//
// return r;
var buffer2 = new byte[1024*10];
var cmsg2 = new byte[1024*10];
var msghdr2 = new Mono.Unix.Native.Msghdr {
msg_control = cmsg2,
msg_controllen = cmsg2.Length,
};
var result = new ReceivedMessage ();
fixed (byte* ptr_buffer2 = buffer2) {
var iovecs2 = new Mono.Unix.Native.Iovec[] {
new Mono.Unix.Native.Iovec {
iov_base = (IntPtr) ptr_buffer2,
iov_len = (ulong) buffer2.Length,
},
};
msghdr2.msg_iov = iovecs2;
msghdr2.msg_iovlen = 1;
//System.Console.WriteLine ("recvmsg");
var ret = Mono.Unix.Native.Syscall.recvmsg (Handle, msghdr2,0);
if (ret ==-1) {
var lastError = Marshal.GetLastWin32Error ();
System.Console.WriteLine ("Last error " + lastError);
System.Console.WriteLine ("Description" + Mono.Unix.UnixMarshal.GetErrorDescription((Mono.Unix.Native.Errno)lastError));
Mono.Unix.UnixMarshal.ThrowExceptionForLastError ();
}
result.Read = ret;
result.Message = buffer2;
}
#if UNIXFDS
var fds = new global::System.Collections.Generic.List<int> ();
for (long offset = Mono.Unix.Native.Syscall.CMSG_FIRSTHDR (msghdr2); offset != -1; offset = Mono.Unix.Native.Syscall.CMSG_NXTHDR (msghdr2, offset)) {
var recvHdr = Mono.Unix.Native.Cmsghdr.ReadFromBuffer (msghdr2, offset);
var recvDataOffset = Mono.Unix.Native.Syscall.CMSG_DATA (msghdr2, offset);
var bytes = recvHdr.cmsg_len - (recvDataOffset - offset);
//Assert.AreEqual (bytes % sizeof (int), 0);
var fdCount = bytes / sizeof (int);
//System.Console.WriteLine("based on struct size, there should be "+fdCount+" fds");
fixed (byte* ptr = msghdr2.msg_control)
for (int i = 0; i < fdCount; i++)
fds.Add (((int*) (ptr + recvDataOffset))[i]);
}
if(fds.Count>0)
{
result.FileDescriptors = fds.ToArray ();
}
#endif
return result;
}
public ReceivedMessage RecvMsg()
{
// int r = 0;
//
// do {
// r = (int)recvmsg (Handle, bufP, flags);
// } while (r < 0 && UnixError.ShouldRetry);
//
// if (r < 0)
// throw UnixError.GetLastUnixException ();
//
// return r;
var buffer2 = new byte[1024 * 10];
var cmsg2 = new byte[1024 * 10];
var msghdr2 = new Mono.Unix.Native.Msghdr {
msg_control = cmsg2,
msg_controllen = cmsg2.Length,
};
var result = new ReceivedMessage();
fixed(byte *ptr_buffer2 = buffer2)
{
var iovecs2 = new Mono.Unix.Native.Iovec[] {
new Mono.Unix.Native.Iovec {
iov_base = (IntPtr)ptr_buffer2,
iov_len = (ulong)buffer2.Length,
},
};
msghdr2.msg_iov = iovecs2;
msghdr2.msg_iovlen = 1;
//System.Console.WriteLine ("recvmsg");
var ret = Mono.Unix.Native.Syscall.recvmsg(Handle, msghdr2, 0);
if (ret == -1)
{
var lastError = Marshal.GetLastWin32Error();
System.Console.WriteLine("Last error " + lastError);
System.Console.WriteLine("Description" + Mono.Unix.UnixMarshal.GetErrorDescription((Mono.Unix.Native.Errno)lastError));
Mono.Unix.UnixMarshal.ThrowExceptionForLastError();
}
result.Read = ret;
result.Message = buffer2;
}
#if UNIXFDS
var fds = new global::System.Collections.Generic.List <int> ();
for (long offset = Mono.Unix.Native.Syscall.CMSG_FIRSTHDR(msghdr2); offset != -1; offset = Mono.Unix.Native.Syscall.CMSG_NXTHDR(msghdr2, offset))
{
var recvHdr = Mono.Unix.Native.Cmsghdr.ReadFromBuffer(msghdr2, offset);
var recvDataOffset = Mono.Unix.Native.Syscall.CMSG_DATA(msghdr2, offset);
var bytes = recvHdr.cmsg_len - (recvDataOffset - offset);
//Assert.AreEqual (bytes % sizeof (int), 0);
var fdCount = bytes / sizeof(int);
//System.Console.WriteLine("based on struct size, there should be "+fdCount+" fds");
fixed(byte *ptr = msghdr2.msg_control)
for (int i = 0; i < fdCount; i++)
{
fds.Add(((int *)(ptr + recvDataOffset))[i]);
}
}
if (fds.Count > 0)
{
result.FileDescriptors = fds.ToArray();
}
#endif
return(result);
}
