diff --git a/src/net.cpp b/src/net.cpp index 96719367cee..eafb3356426 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -855,14 +855,18 @@ void ThreadSocketHandler2(void* parg) { if (pnode->hSocket == INVALID_SOCKET) continue; - FD_SET(pnode->hSocket, &fdsetRecv); - FD_SET(pnode->hSocket, &fdsetError); - hSocketMax = max(hSocketMax, pnode->hSocket); - have_fds = true; { TRY_LOCK(pnode->cs_vSend, lockSend); - if (lockSend && !pnode->vSend.empty()) - FD_SET(pnode->hSocket, &fdsetSend); + if (lockSend) { + // do not read, if draining write queue + if (!pnode->vSend.empty()) + FD_SET(pnode->hSocket, &fdsetSend); + else + FD_SET(pnode->hSocket, &fdsetRecv); + FD_SET(pnode->hSocket, &fdsetError); + hSocketMax = max(hSocketMax, pnode->hSocket); + have_fds = true; + } } } } diff --git a/src/net.h b/src/net.h index 78f8e72fb03..03d32526bc5 100644 --- a/src/net.h +++ b/src/net.h @@ -42,6 +42,7 @@ unsigned short GetListenPort(); bool BindListenPort(const CService &bindAddr, std::string& strError=REF(std::string())); void StartNode(void* parg); bool StopNode(); +void SocketSendData(CNode *pnode); enum { @@ -437,6 +438,10 @@ public: printf("(%d bytes)\n", nSize); } + // If write queue empty, attempt "optimistic write" + if (nHeaderStart == 0) + SocketSendData(this); + nHeaderStart = -1; nMessageStart = -1; LEAVE_CRITICAL_SECTION(cs_vSend);