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-rw-r--r--src/common/socket.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/src/common/socket.c b/src/common/socket.c
index 022a4ae72..11493fef4 100644
--- a/src/common/socket.c
+++ b/src/common/socket.c
@@ -205,6 +205,10 @@ int naddr_ = 0; // # of ip addresses
// initial send buffer size (will be resized as needed)
#define WFIFO_SIZE (16*1024)
+// Maximum size of pending data in the write fifo. (for non-server connections)
+// The connection is closed if it goes over the limit.
+#define WFIFO_MAX (1*1024*1024)
+
struct socket_data* session[FD_SETSIZE];
#ifdef SEND_SHORTLIST
@@ -625,12 +629,18 @@ int WFIFOSET(int fd, size_t len)
if(s->wdata_size+len > s->max_wdata)
{ // actually there was a buffer overflow already
uint32 ip = s->client_addr;
- ShowFatalError("WFIFOSET: Write Buffer Overflow. Connection %d (%d.%d.%d.%d) has written %d bytes on a %d/%d bytes buffer.\n", fd, CONVIP(ip), len, s->wdata_size, s->max_wdata);
+ ShowFatalError("WFIFOSET: Write Buffer Overflow. Connection %d (%d.%d.%d.%d) has written %u bytes on a %u/%u bytes buffer.\n", fd, CONVIP(ip), (unsigned int)len, (unsigned int)s->wdata_size, (unsigned int)s->max_wdata);
ShowDebug("Likely command that caused it: 0x%x\n", (*(unsigned short*)(s->wdata + s->wdata_size)));
// no other chance, make a better fifo model
exit(EXIT_FAILURE);
}
+ if( !s->flag.server && s->wdata_size+len > WFIFO_MAX )
+ {// reached maximum write fifo size
+ set_eof(fd);
+ return 0;
+ }
+
s->wdata_size += len;
//If the interserver has 200% of its normal size full, flush the data.
if( s->flag.server && s->wdata_size >= 2*FIFOSIZE_SERVERLINK )