net: Send post-verack handshake messages at most once

MarcoFalke · fanquake · commit 6113b547f4cc · 2020-10-19T10:59:49.000+08:00
Github-Pull: #20146 Rebased-From: fa1f6f2
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
@@ -2119,6 +2119,8 @@ bool ProcessMessage(CNode* pfrom, const std::string& msg_type, CDataStream& vRec
 
     if (msg_type == NetMsgType::VERACK)
     {
+        if (pfrom->fSuccessfullyConnected) return true;
+
         pfrom->SetRecvVersion(std::min(pfrom->nVersion.load(), PROTOCOL_VERSION));
 
         if (!pfrom->fInbound) {

Original file line number	Diff line number	Diff line change
`@@ -2119,6 +2119,8 @@ bool ProcessMessage(CNode* pfrom, const std::string& msg_type, CDataStream& vRec`
`2119`	`2119`
`2120`	`2120`	`if (msg_type == NetMsgType::VERACK)`
`2121`	`2121`	`{`
	`2122`	`+ if (pfrom->fSuccessfullyConnected) return true;`
	`2123`	`+`
`2122`	`2124`	`pfrom->SetRecvVersion(std::min(pfrom->nVersion.load(), PROTOCOL_VERSION));`
`2123`	`2125`
`2124`	`2126`	`if (!pfrom->fInbound) {`