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engine: client: introduce cookie protocol extension, when client connects to the server, it provides randomized 64-bit value to be prefixed into netchan messages

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* Prevent clientuseragent from leaking data.
* Process qport in netchan, cleaning up code
This commit is contained in:
Alibek Omarov
2026-05-26 02:14:58 +05:00
committed by a1batross
parent d61983a5d2
commit e5c4e49782
7 changed files with 152 additions and 30 deletions
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engine/common/protocol.h
+2 -1
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@@ -283,7 +283,8 @@ extern const char *const svc_quake_strings[svc_lastmsg+1];
extern const char *const svc_goldsrc_strings[svc_lastmsg+1];
// FWGS extensions
#define NET_EXT_SPLITSIZE (1U<<0) // set splitsize by cl_dlmax
#define NET_EXT_SPLITSIZE (1U<<0) // set splitsize by cl_dlmax
#define NET_EXT_NETCHAN_COOKIE (1U<<1) // per-connection 64-bit netchan cookie validated on every sequenced packet
// GoldSrc protocol definitions
#define PROTOCOL_GOLDSRC_VERSION 48