IPStack - Fixed TCP checksuming

[tpg/acess2.git] / Modules / IPStack / tcp.c

diff --git a/Modules/IPStack/tcp.c b/Modules/IPStack/tcp.c
index 68e72d7..1f51e10 100644 (file)
--- a/Modules/IPStack/tcp.c
+++ b/Modules/IPStack/tcp.c
@@ -90,6 +90,8 @@ void TCP_SendPacket( tTCPConnection *Conn, size_t Length, tTCPHeader *Data )
                buf[2] = (htons(Length)<<16) | (6<<8) | 0;
                Data->Checksum = 0;
                memcpy( &buf[3], Data, Length );
+               if(Length & 1)
+                       ((Uint8*)buf)[12+Length] = 0;
                Data->Checksum = htons( IPv4_Checksum( buf, buflen ) );
                free(buf);
                IPv4_SendPacket(Conn->Interface, Conn->RemoteIP.v4, IP4PROT_TCP, 0, Length, Data);