3 files changed, 13 insertions, 0 deletions
diff --git a/src/modules/m_spanningtree/treesocket.h b/src/modules/m_spanningtree/treesocket.h
index cbf3c0812..fae22638d 100644
--- a/src/modules/m_spanningtree/treesocket.h
+++ b/src/modules/m_spanningtree/treesocket.h
@@ -95,6 +95,7 @@ class TreeSocket : public InspSocket
 	std::string ourchallenge;		/* Challenge sent for challenge/response */
 	std::string theirchallenge;		/* Challenge recv for challenge/response */
 	std::string OutboundPass;		/* Outbound password */
+	bool sentcapab;				/* Have sent CAPAB already */
  public:
 
 	/** Because most of the I/O gubbins are encapsulated within
diff --git a/src/modules/m_spanningtree/treesocket1.cpp b/src/modules/m_spanningtree/treesocket1.cpp
index 0739e8152..a23d55555 100644
--- a/src/modules/m_spanningtree/treesocket1.cpp
+++ b/src/modules/m_spanningtree/treesocket1.cpp
@@ -73,6 +73,7 @@ TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, cha
 	this->LinkState = WAIT_AUTH_1;
 	theirchallenge.clear();
 	ourchallenge.clear();
+	sentcapab = false;
 	/* If we have a transport module hooked to the parent, hook the same module to this
 	 * socket, and set a timer waiting for handshake before we send CAPAB etc.
 	 */
@@ -186,6 +187,7 @@ bool TreeSocket::OnConnected()
 					this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "<hidden>" : this->GetIP())+"] using transport \2"+x->Hook+"\2");
 				}
 				this->OutboundPass = x->SendPass;
+				sentcapab = false;
 
 				/* found who we're supposed to be connecting to, send the neccessary gubbins. */
 				if (this->GetHook())
@@ -328,6 +330,10 @@ std::string TreeSocket::RandString(unsigned int length)
 
 void TreeSocket::SendCapabilities()
 {
+	if (sentcapab)
+		return;
+
+	sentcapab = true;
 	irc::commasepstream modulelist(MyCapabilities());
 	this->WriteLine("CAPAB START");
 
diff --git a/src/modules/m_spanningtree/treesocket2.cpp b/src/modules/m_spanningtree/treesocket2.cpp
index d13ea0d89..86a00a241 100644
--- a/src/modules/m_spanningtree/treesocket2.cpp
+++ b/src/modules/m_spanningtree/treesocket2.cpp
@@ -803,6 +803,9 @@ bool TreeSocket::Outbound_Reply_Server(std::deque<std::string> &params)
 	this->InboundServerName = sname;
 	this->InboundDescription = description;
 
+	if (!sentcapab)
+		this->SendCapabilities();
+
 	if (hops)
 	{
 		this->SendError("Server too far away for authentication");
@@ -856,6 +859,9 @@ bool TreeSocket::Inbound_Server(std::deque<std::string> &params)
 	this->InboundServerName = sname;
 	this->InboundDescription = description;
 
+	if (!sentcapab)
+		this->SendCapabilities();
+
 	if (hops)
 	{
 		this->SendError("Server too far away for authentication");