From 7f7341dc2a13042110f4a18745ab32e15ea035d9 Mon Sep 17 00:00:00 2001
From: psychon <psychon@726aef4b-f618-498e-8847-2d620e286838>
Date: Thu, 18 Jun 2009 19:32:12 +0000
Subject: [PATCH] CSocket: Close sockets which cause a EMFILE

This now closes listening sockets if we hit some fd limit like we are already
doing in CRealListener.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1544 726aef4b-f618-498e-8847-2d620e286838
---
 Modules.cpp | 8 ++++++++
 Modules.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/Modules.cpp b/Modules.cpp
index dd6cec02..723aedd5 100644
--- a/Modules.cpp
+++ b/Modules.cpp
@@ -137,6 +137,14 @@ void CSocket::ReachedMaxBuffer() {
 	Close();
 }
 
+void CSocket::SockError(int iErrno) {
+	DEBUG(GetSockName() << " == SockError(" << strerror(iErrno) << ")");
+	if (iErrno == EMFILE) {
+		// We have too many open fds, this can cause a busy loop.
+		Close();
+	}
+}
+
 bool CSocket::Connect(const CString& sHostname, unsigned short uPort, bool bSSL, unsigned int uTimeout) {
 	CUser* pUser = m_pModule->GetUser();
 	CString sSockName = "MOD::C::" + m_pModule->GetModName();
diff --git a/Modules.h b/Modules.h
index 4c98371a..da84ae6f 100644
--- a/Modules.h
+++ b/Modules.h
@@ -151,6 +151,7 @@ public:
 
 	// This defaults to closing the socket, feel free to override
 	virtual void ReachedMaxBuffer();
+	virtual void SockError(int iErrno);
 
 	bool Connect(const CString& sHostname, unsigned short uPort, bool bSSL = false, unsigned int uTimeout = 60);
 	bool Listen(unsigned short uPort, bool bSSL = false, unsigned int uTimeout = 0);