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-rw-r--r--src/inspsocket.cpp16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/inspsocket.cpp b/src/inspsocket.cpp
index 1f0aa5629..907acea67 100644
--- a/src/inspsocket.cpp
+++ b/src/inspsocket.cpp
@@ -204,6 +204,22 @@ void StreamSocket::DoWrite()
int rv = -1;
try
{
+ if (sendq.size() > 1 && sendq[0].length() < 1024)
+ {
+ // Avoid multiple repeated SSL encryption invocations
+ // This adds a single copy of the queue, but avoids
+ // much more overhead in terms of system calls invoked
+ // by the IOHook.
+ //
+ // The length limit of 1024 is to prevent merging strings
+ // more than once when writes begin to block.
+ std::string tmp;
+ tmp.reserve(sendq_len);
+ for(unsigned int i=0; i < sendq.size(); i++)
+ tmp.append(sendq[i]);
+ sendq.clear();
+ sendq.push_back(tmp);
+ }
while (!sendq.empty())
{
std::string& front = sendq.front();