Allow socket buffers to be unset

src/peer.cpp

@@ -65,11 +65,18 @@ void Peer::_set_socket_options() {
     CHECK(net_);
     CHECK(sock_);
 
+    const size_t desiredSend = net_->getSendBufferSize(sock_->scheme());
+    const size_t desiredRecv = net_->getRecvBufferSize(sock_->scheme());
+
     // error printed by set methods (return value ignored)
-    sock_->set_send_buffer_size(net_->getSendBufferSize(sock_->scheme()));
-    sock_->set_recv_buffer_size(net_->getRecvBufferSize(sock_->scheme()));
+    if (desiredSend > 0) {
+        sock_->set_send_buffer_size(desiredSend);
+    }
+    if (desiredRecv > 0) {
+        sock_->set_recv_buffer_size(desiredRecv);
+    }
 
-    DLOG(1) << "send buffer size: " << (sock_->get_send_buffer_size() >> 10) << "KiB, "
+    DLOG(INFO) << "send buffer size: " << (sock_->get_send_buffer_size() >> 10) << "KiB, "
             << "recv buffer size: " << (sock_->get_recv_buffer_size() >> 10) << "KiB";
 }
 

src/protocol/connection.cpp

@@ -121,7 +121,7 @@ ssize_t SocketConnection::writev(const struct iovec *iov, int iovcnt) {
 
     DLOG(2) << "message required " << writev_calls << " writev() calls";
 
-    if (can_increase_sock_buffer_) {
+    /*if (can_increase_sock_buffer_) {
         auto send_buf_size = sock_.get_send_buffer_size();
         auto send_buf_size_new = size_t(sock_.get_send_buffer_size() * 1.5);
 
@@ -142,7 +142,7 @@ ssize_t SocketConnection::writev(const struct iovec *iov, int iovcnt) {
                 << "(buffer size: " << send_buf_size << ")";
             can_increase_sock_buffer_ &= !error;
         }
-    }
+    }*/
 
     return requested;
 }