- /* copy data to write buffer */
- if (!array_catb( &My_Connections[Idx].wbuf, Data, Len ))
+ /* Uncompressed link:
+ * Check if outbound buffer has enough space for the data. */
+ if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
+ writebuf_limit) {
+ /* Buffer is full, flush it. Handle_Write deals with
+ * low-level errors, if any. */
+ if (!Handle_Write(Idx))
+ return false;
+ }
+
+ /* When the write buffer is still too big after flushing it,
+ * the connection will be killed. */
+ if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
+ writebuf_limit) {
+ Log(LOG_NOTICE,
+ "Write buffer overflow (connection %d, size %lu byte)!",
+ Idx,
+ (unsigned long)array_bytes(&My_Connections[Idx].wbuf));
+ Conn_Close(Idx, "Write buffer overflow!", NULL, false);
+ return false;
+ }
+
+ /* Copy data to write buffer */
+ if (!array_catb(&My_Connections[Idx].wbuf, Data, Len))