public int Forward(IntPtr destinationHandle)
{
if (_msg.Init() == -1)
{
return(-1);
}
int receiveMore;
int bytesSent;
do
{
if (LibZmq.zmq_msg_recv(_msg, SocketHandle, 0) == -1)
{
return(-1);
}
if (GetReceiveMore(out receiveMore) == -1)
{
return(-1);
}
if ((bytesSent = LibZmq.zmq_msg_send(_msg, destinationHandle, receiveMore == 1 ? (int)SocketFlags.SendMore : 0)) == -1)
{
return(-1);
}
}while (receiveMore == 1);
if (_msg.Close() == -1)
{
return(-1);
}
return(bytesSent);
}
public int Receive(byte[] buffer, int flags)
{
if (LibZmq.zmq_msg_init_size(_message, buffer.Length) == -1)
{
return(-1);
}
int bytesReceived = RetryIfInterrupted(() => LibZmq.zmq_recvmsg(SocketHandle, _message, flags));
if (bytesReceived == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not return number of bytes received
bytesReceived = LibZmq.zmq_msg_size(_message);
}
if (bytesReceived > 0)
{
Marshal.Copy(LibZmq.zmq_msg_data(_message), buffer, 0, bytesReceived);
}
if (LibZmq.zmq_msg_close(_message) == -1)
{
return(-1);
}
return(bytesReceived);
}
public int Forward(IntPtr destinationHandle)
{
if (LibZmq.zmq_msg_init(_message) == -1)
{
return(-1);
}
int receiveMore;
int bytesSent;
do
{
if (LibZmq.zmq_recvmsg(SocketHandle, _message, 0) == -1)
{
return(-1);
}
if (GetReceiveMore(out receiveMore) == -1)
{
return(-1);
}
if ((bytesSent = LibZmq.zmq_sendmsg(destinationHandle, _message, receiveMore == 1 ? (int)SocketFlags.SendMore : 0)) == -1)
{
return(-1);
}
}while (receiveMore == 1);
if (LibZmq.zmq_msg_close(_message) == -1)
{
return(-1);
}
return(bytesSent);
}
public int Send(byte[] buffer, int size, int flags)
{
if (LibZmq.zmq_msg_init_size(_message, size) == -1)
{
return(-1);
}
if (size > 0)
{
Marshal.Copy(buffer, 0, LibZmq.zmq_msg_data(_message), size);
}
int bytesSent = RetryIfInterrupted(() => LibZmq.zmq_sendmsg(SocketHandle, _message, flags));
if (bytesSent == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not report number of bytes sent, so this may be inaccurate/misleading
bytesSent = size;
}
if (LibZmq.zmq_msg_close(_message) == -1)
{
return(-1);
}
return(bytesSent);
}
public int Init()
{
int rc = LibZmq.zmq_msg_init(_ptr);
_initialized = true;
return(rc);
}
public int Init(int size)
{
int rc = LibZmq.zmq_msg_init_size(_ptr, size);
_initialized = true;
return(rc);
}
public int Close()
{
int rc = LibZmq.zmq_msg_close(_ptr);
_initialized = false;
return(rc);
}
public int SetSocketOption(int option, int value)
{
using (var optionValue = new DisposableIntPtr(Marshal.SizeOf(typeof(int))))
{
Marshal.WriteInt32(optionValue, value);
return(RetryIfInterrupted(() => LibZmq.zmq_setsockopt(SocketHandle, option, optionValue, sizeof(int))));
}
}
public int SetSocketOption(int option, ulong value)
{
using (var optionValue = new DisposableIntPtr(Marshal.SizeOf(typeof(ulong))))
{
Marshal.WriteInt64(optionValue, unchecked (Convert.ToInt64(value)));
return(RetryIfInterrupted(() => LibZmq.zmq_setsockopt(SocketHandle, option, optionValue, sizeof(ulong))));
}
}
public int SetSocketOption(int option, byte[] value)
{
using (var optionValue = new DisposableIntPtr(value.Length))
{
Marshal.Copy(value, 0, optionValue, value.Length);
return(RetryIfInterrupted(() => LibZmq.zmq_setsockopt(SocketHandle, option, optionValue, value.Length)));
}
}
public static int IfInterrupted <T1, T2, T3>(Func <T1, T2, T3, int> operation, T1 arg1, T2 arg2, T3 arg3)
{
int rc;
do
{
rc = operation(arg1, arg2, arg3);
}while (rc == -1 && LibZmq.zmq_errno() == ErrorCode.EINTR);
return(rc);
}
private static int RetryIfInterrupted(Func <int> func)
{
int rc;
do
{
rc = func();
}while (rc == -1 && LibZmq.zmq_errno() == ErrorCode.EINTR);
return(rc);
}
public int Initialize()
{
try
{
ContextHandle = LibZmq.zmq_ctx_new();
}
catch (Exception ex)
{
}
return(ContextHandle == IntPtr.Zero ? -1 : 0);
}
public int Copy(ZmqMsgT dest)
{
if (!_initialized)
{
dest.Close();
return(0);
}
int rc = LibZmq.zmq_msg_copy(dest._ptr, _ptr);
dest._initialized = rc == 0;
return(rc);
}
public int GetSocketOption(int option, out ulong value)
{
using (var optionLength = new DisposableIntPtr(IntPtr.Size))
using (var optionValue = new DisposableIntPtr(Marshal.SizeOf(typeof(ulong))))
{
Marshal.WriteInt32(optionLength, sizeof(ulong));
int rc = RetryIfInterrupted(() => LibZmq.zmq_getsockopt(SocketHandle, option, optionValue, optionLength));
value = unchecked (Convert.ToUInt64(Marshal.ReadInt64(optionValue)));
return(rc);
}
}
public int Close()
{
// Allow Close to be called repeatedly without failure
if (SocketHandle == IntPtr.Zero)
{
return 0;
}
int rc = LibZmq.zmq_close(SocketHandle);
SocketHandle = IntPtr.Zero;
return rc;
}
public int GetSocketOption(int option, out byte[] value)
{
using (var optionLength = new DisposableIntPtr(IntPtr.Size))
using (var optionValue = new DisposableIntPtr(MaxBinaryOptionSize))
{
Marshal.WriteInt32(optionLength, MaxBinaryOptionSize);
int rc = RetryIfInterrupted(() => LibZmq.zmq_getsockopt(SocketHandle, option, optionValue, optionLength));
value = new byte[Marshal.ReadInt32(optionLength)];
Marshal.Copy(optionValue, value, 0, value.Length);
return(rc);
}
}
public static ErrorDetails GetLastError()
{
int errorCode = GetErrorCode();
if (KnownErrors.ContainsKey(errorCode))
{
return(KnownErrors[errorCode]);
}
string message = Marshal.PtrToStringAnsi(LibZmq.zmq_strerror(errorCode));
var errorDetails = new ErrorDetails(errorCode, message);
KnownErrors[errorCode] = errorDetails;
return(errorDetails);
}
public static ErrorDetails GetLastError()
{
int errorCode = GetErrorCode();
if (KnownErrors.ContainsKey(errorCode))
{
return(KnownErrors[errorCode]);
}
string message = Marshal.PtrToStringUni(LibZmq.zmq_strerror(errorCode));
byte[] temp = Encoding.Unicode.GetBytes(message);
message = Encoding.ASCII.GetString(temp, 0, temp.Length).Replace('\0', ' ').Trim();;
var errorDetails = new ErrorDetails(errorCode, message);
KnownErrors[errorCode] = errorDetails;
return(errorDetails);
}
public void Terminate()
{
if (ContextHandle == IntPtr.Zero)
{
return;
}
while (LibZmq.zmq_term(ContextHandle) != 0)
{
int errorCode = ErrorProxy.GetErrorCode();
// If zmq_term fails, valid return codes are EFAULT or EINTR. If EINTR is set, termination
// was interrupted by a signal and may be safely retried.
if (errorCode == ErrorCode.EFAULT)
{
// This indicates an invalid context was passed in. There's nothing we can do about it here.
// It's arguably not a fatal error, so throwing an exception would be bad seeing as this may
// run inside a finalizer.
break;
}
}
ContextHandle = IntPtr.Zero;
}
public byte[] Receive(byte[] buffer, int flags, out int size)
{
size = -1;
if (LibZmq.zmq_msg_init(_message) == -1)
{
return(buffer);
}
int bytesReceived = RetryIfInterrupted(() => LibZmq.zmq_recvmsg(SocketHandle, _message, flags));
if (bytesReceived >= 0)
{
if (bytesReceived == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not return number of bytes received
bytesReceived = LibZmq.zmq_msg_size(_message);
}
size = bytesReceived;
if (buffer == null || size > buffer.Length)
{
buffer = new byte[size];
}
Marshal.Copy(LibZmq.zmq_msg_data(_message), buffer, 0, size);
}
if (LibZmq.zmq_msg_close(_message) == -1)
{
size = -1;
}
return(buffer);
}
public IntPtr CreateSocket(int socketType)
{
return(LibZmq.zmq_socket(ContextHandle, socketType));
}
public IntPtr Data()
{
return(LibZmq.zmq_msg_data(_ptr));
}
public int RegisterMonitor(LibZmq.MonitorFuncCallback callback)
{
MonitorRegistered = true;
return LibZmq.zmq_ctx_set_monitor(ContextHandle, callback);
}
public int Initialize()
{
ContextHandle = LibZmq.zmq_init(ThreadPoolSize);
return(ContextHandle == IntPtr.Zero ? -1 : 0);
}
public int Monitor(string endpoint, int events)
{
return LibZmq.zmq_socket_monitor(SocketHandle, Encoding.ASCII.GetBytes(endpoint), events);
}
public int RegisterMonitor(LibZmq.MonitorFuncCallback callback)
{
_callback = callback;
return LibZmq.zmq_ctx_set_monitor(ContextHandle, _callback);
}
public int Disconnect(string endpoint)
{
return LibZmq.zmq_disconnect(SocketHandle, Encoding.ASCII.GetBytes(endpoint));
}
public int Unbind(string endpoint)
{
return LibZmq.zmq_unbind(SocketHandle, Encoding.ASCII.GetBytes(endpoint));
}
public int SetContextOption(int option, int value)
{
return(LibZmq.zmq_ctx_set(ContextHandle, option, value));
}
public static int GetErrorCode()
{
return(LibZmq.zmq_errno());
}
public int Size()
{
return(LibZmq.zmq_msg_size(_ptr));
}