Added TCP_NODELAY to server sockets.

Reviewers: mislav.bradac

Reviewed By: mislav.bradac

Subscribers: pullbot, buda

Differential Revision: https://phabricator.memgraph.io/D362

src/io/network/socket.cpp

@@ -137,6 +137,16 @@ bool Socket::SetKeepAlive() {
   return true;
 }
 
+bool Socket::SetNoDelay() {
+  int optval = 1;
+  socklen_t optlen = sizeof(optval);
+
+  if (setsockopt(socket_, SOL_TCP, TCP_NODELAY, (void*)&optval, optlen) < 0)
+    return false;
+
+  return true;
+}
+
 bool Socket::SetTimeout(long sec, long usec) {
   struct timeval tv;
   tv.tv_sec = sec;

src/io/network/socket.hpp

@@ -97,6 +97,17 @@ class Socket {
    */
   bool SetKeepAlive();
 
+  /**
+   * Enables TCP no_delay on the socket.
+   * When enabled, the socket doesn't wait for an ACK of every data packet
+   * before sending the next packet.
+   *
+   * @return enable no_delay success status:
+   *             true if no_delay was successfully enabled on the socket
+   *             false if no_delay was not enabled
+   */
+  bool SetNoDelay();
+
   /**
    * Sets the socket timeout.
    *

src/io/network/stream_reader.hpp

@@ -30,6 +30,7 @@ class StreamReader : public StreamListener<Derived, Stream> {
         s.endpoint().port());
 
     if (!s.SetKeepAlive()) return false;
+    if (!s.SetNoDelay()) return false;
 
     auto& stream = this->derived().OnConnect(std::move(s));