/// <summary>
/// Receive a message. The <c>Recv</c> method calls this lower-level method to do the actual receiving.
/// </summary>
/// <param name="msg">the <c>Msg</c> to receive the message into</param>
/// <returns><c>true</c> if the message was received successfully, <c>false</c> if there were no messages to receive</returns>
protected override bool XRecv(ref Msg msg)
{
if (m_receivingState == State.Data)
{
msg.Move(ref m_prefetchedMsg);
m_receivingState = State.RoutingId;
return(true);
}
var pipe = new Pipe[1];
bool isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref msg);
// Drop any messages with more flag
while (isMessageAvailable && msg.HasMore)
{
// drop all frames of the current multi-frame message
isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref msg);
while (isMessageAvailable && msg.HasMore)
{
isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref msg);
}
// get the new message
isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref msg);
}
if (!isMessageAvailable)
{
return(false);
}
Debug.Assert(pipe[0] != null);
// We are at the beginning of a message.
// Keep the message part we have in the prefetch buffer
// and return the ID of the peer instead.
m_prefetchedMsg.Move(ref msg);
byte[] routingId = pipe[0].RoutingId;
msg.InitPool(routingId.Length);
msg.Put(routingId, 0, routingId.Length);
msg.SetFlags(MsgFlags.More);
m_receivingState = State.Data;
return(true);
}
/// <summary>
/// Receive a message. The <c>Recv</c> method calls this lower-level method to do the actual receiving.
/// </summary>
/// <param name="msg">the <c>Msg</c> to receive the message into</param>
/// <returns><c>true</c> if the message was received successfully, <c>false</c> if there were no messages to receive</returns>
protected override bool XRecv(ref Msg msg)
{
bool received = m_fairQueueing.RecvPipe(ref msg, out var pipe);
// Drop any messages with more flag
while (received && msg.HasMore)
{
// drop all frames of the current multi-frame message
received = m_fairQueueing.Recv(ref msg);
while (received && msg.HasMore)
{
received = m_fairQueueing.Recv(ref msg);
}
// get the new message
if (received)
{
received = m_fairQueueing.RecvPipe(ref msg, out pipe);
}
}
if (!received)
{
return(false);
}
Assumes.NotNull(pipe);
msg.RoutingId = pipe.RoutingId;
return(true);
}
/// <summary>
/// Receive a message. The <c>Recv</c> method calls this lower-level method to do the actual receiving.
/// </summary>
/// <param name="msg">the <c>Msg</c> to receive the message into</param>
/// <returns><c>true</c> if the message was received successfully, <c>false</c> if there were no messages to receive</returns>
protected override bool XRecv(ref Msg msg)
{
if (m_prefetched)
{
if (!m_identitySent)
{
msg.Move(ref m_prefetchedId);
m_identitySent = true;
}
else
{
msg.Move(ref m_prefetchedMsg);
m_prefetched = false;
}
return(true);
}
var pipe = new Pipe[1];
bool isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref m_prefetchedMsg);
if (!isMessageAvailable)
{
return(false);
}
Debug.Assert(pipe[0] != null);
Debug.Assert(!m_prefetchedMsg.HasMore);
// We have received a frame with TCP data.
// Rather than sending this frame, we keep it in prefetched
// buffer and send a frame with peer's ID.
byte[] identity = pipe[0].Identity;
msg.InitPool(identity.Length);
msg.Put(identity, 0, identity.Length);
msg.SetFlags(MsgFlags.More);
m_prefetched = true;
m_identitySent = true;
return(true);
}
protected override bool XRecv(SendReceiveOptions flags, ref Msg msg)
{
if (m_prefetched)
{
if (!m_identitySent)
{
msg.Move(ref m_prefetchedId);
m_identitySent = true;
}
else
{
msg.Move(ref m_prefetchedMsg);
m_prefetched = false;
}
m_moreIn = msg.HasMore;
return(true);
}
var pipe = new Pipe[1];
bool isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref msg);
// It's possible that we receive peer's identity. That happens
// after reconnection. The current implementation assumes that
// the peer always uses the same identity.
while (isMessageAvailable && msg.IsIdentity)
{
isMessageAvailable = m_fairQueueing.RecvPipe(pipe, ref msg);
}
if (!isMessageAvailable)
{
return(false);
}
Debug.Assert(pipe[0] != null);
// If we are in the middle of reading a message, just return the next part.
if (m_moreIn)
{
m_moreIn = msg.HasMore;
}
else
{
// We are at the beginning of a message.
// Keep the message part we have in the prefetch buffer
// and return the ID of the peer instead.
m_prefetchedMsg.Move(ref msg);
m_prefetched = true;
byte[] identity = pipe[0].Identity;
msg.InitPool(identity.Length);
msg.Put(identity, 0, identity.Length);
msg.SetFlags(MsgFlags.More);
m_identitySent = true;
}
return(true);
}
/// <summary>
/// Get a message from FairQueuing data structure
/// </summary>
/// <param name="msg">a Msg to receive the message into</param>
/// <param name="pipe">a specific Pipe to receive on</param>
/// <returns><c>true</c> if the message was received successfully, <c>false</c> if there were no messages to receive</returns>
protected bool XRecvPipe(ref Msg msg, out Pipe pipe)
{
return(m_fairQueueing.RecvPipe(ref msg, out pipe));
}
/// <summary>
/// Receive a message. The <c>Recv</c> method calls this lower-level method to do the actual receiving.
/// </summary>
/// <param name="msg">the <c>Msg</c> to receive the message into</param>
/// <returns><c>true</c> if the message was received successfully, <c>false</c> if there were no messages to receive</returns>
protected override bool XRecv(ref Msg msg)
{
if (m_prefetched)
{
if (!m_identitySent)
{
msg.Move(ref m_prefetchedId);
m_identitySent = true;
}
else
{
msg.Move(ref m_prefetchedMsg);
m_prefetched = false;
}
m_moreIn = msg.HasMore;
if (!m_moreIn)
{
if (m_closingCurrentIn)
{
Assumes.NotNull(m_currentIn);
m_currentIn.Terminate(true);
m_closingCurrentIn = false;
}
m_currentIn = null;
}
return(true);
}
bool isMessageAvailable = m_fairQueueing.RecvPipe(ref msg, out Pipe? pipe);
// It's possible that we receive peer's identity. That happens
// after reconnection. The current implementation assumes that
// the peer always uses the same identity.
while (isMessageAvailable && msg.IsIdentity)
{
isMessageAvailable = m_fairQueueing.RecvPipe(ref msg, out pipe);
}
if (!isMessageAvailable)
{
return(false);
}
Assumes.NotNull(pipe);
// If we are in the middle of reading a message, just return the next part.
if (m_moreIn)
{
m_moreIn = msg.HasMore;
if (!m_moreIn)
{
if (m_closingCurrentIn)
{
Assumes.NotNull(m_currentIn);
m_currentIn.Terminate(true);
m_closingCurrentIn = false;
}
m_currentIn = null;
}
}
else
{
// We are at the beginning of a message.
// Keep the message part we have in the prefetch buffer
// and return the ID of the peer instead.
m_prefetchedMsg.Move(ref msg);
m_prefetched = true;
m_currentIn = pipe;
Assumes.NotNull(pipe.Identity);
byte[] identity = pipe.Identity;
msg.InitPool(identity.Length);
msg.Put(identity, 0, identity.Length);
msg.SetFlags(MsgFlags.More);
m_identitySent = true;
}
return(true);
}