Problem with old clients

I ran into an issue with old client, namely 2009-10-13 one. Whenever @spawn was used, client would freeze, and no further response given.

I've decided to find things out, and:

Got a WPE to sniff incoming packets (This is first time I work with packets, so please don't bash me)
[quote]
[color=#008000]//Packet on spawn from working server, spawned 2022, Nidd[/color]
F3 01 19 CA B5 06 58 01 00 00
7C 00 00 19 CA B5 06 96 00 00 00 00 00 00 00 00 00 00 00 00 00 E6 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 14 48 A0 00 00 00 00
17 01 F3 00 8A 84 1E 00 01 00 51 00 8A 00 28 54 5C 35
8E 00 1B 00 41 6C 6C 20 6D 6F 6E 73 74 65 72 73 20 73 75 6D 6D 6F 6E 65 64 21 00

[color=#008000]//Packets on spawn from Hercules[/color]
F3 01 6B A2 8E 06 58 01 00 00
7C 00 05 6B A2 8E 06 96 00 00 00 00 00 00 00 00 00 00 00 00 00 E6 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 21 0D 10 00 00
17 01 F3 00 80 84 1E 00 01 00 84 00 D1 00 DF 2E 7F 14
8E 00 1B 00 41 6C 6C 20 6D 6F 6E 73 74 65 72 73 20 73 75 6D 6D 6F 6E 65 64 21 00

F3 01 EE A1 8E 06 58 01 00 00
7C 00 05 EE A1 8E 06 96 00 00 00 00 00 00 00 00 00 00 00 00 00 E6 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 21 8C B0 00 00
17 01 F3 00 80 84 1E 00 01 00 86 00 CB 00 DC 7D 08 17
8E 00 1B 00 41 6C 6C 20 6D 6F 6E 73 74 65 72 73 20 73 75 6D 6D 6F 6E 65 64 21 00

F3 01 EF A1 8E 06 58 01 00 00
7C 00 05 EF A1 8E 06 96 00 00 00 00 00 00 00 00 00 00 00 00 00 E6 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 8C 60 00 00
17 01 F3 00 80 84 1E 00 01 00 82 00 C6 00 93 CF 17 17
8E 00 1B 00 41 6C 6C 20 6D 6F 6E 73 74 65 72 73 20 73 75 6D 6D 6F 6E 65 64 21 00[/quote]

I'm not sure if I divided them right into new lines (packet per line), but I think it should be so. As seen here, hercules packet 0x007c is 2 bytes shorter.

I think problem lies here in clif.c:[code=auto:1023] void clif_spawn_unit2(struct block_list* bl, enum send_target target) { #if PACKETVER < 20091103 struct map_session_data* sd; struct status_change* sc = status->get_sc(bl); struct view_data* vd = status->get_viewdata(bl); struct packet_spawn_unit2 p; int g_id = status->get_guild_id(bl); sd = BL_CAST(BL_PC, bl); p.PacketType = spawn_unit2Type; #if PACKETVER >= 20071106 p.objecttype = clif_bl_type(bl); #endif p.GID = bl->id; p.speed = status->get_speed(bl); p.bodyState = (sc) ? sc->opt1 : 0; p.healthState = (sc) ? sc->opt2 : 0; p.effectState = (sc) ? sc->option : bl->type == BL_NPC ? ((TBL_NPC*)bl)->option : 0; p.head = vd->hair_style; p.weapon = vd->weapon; p.accessory = vd->head_bottom; p.job = vd->class_; p.shield = vd->shield; p.accessory2 = vd->head_top; p.accessory3 = vd->head_mid; if( bl->type == BL_NPC && vd->class_ == FLAG_CLASS ) { //The hell, why flags work like this? p.shield = status->get_emblem_id(bl); p.accessory2 = GetWord(g_id, 1); p.accessory3 = GetWord(g_id, 0); } p.headpalette = vd->hair_color; p.bodypalette = vd->cloth_color; p.headDir = (sd)? sd->head_dir : 0; p.isPKModeON = (sd && sd->status.karma) ? 1 : 0; p.sex = vd->sex; WBUFPOS(&p.PosDir[0],0,bl->x,bl->y,unit->getdir(bl)); p.xSize = p.ySize = (sd) ? 5 : 0; clif->send(&p,sizeof(p),bl,target); #else return; #endif [/code]
Tested it by replacing
clif->send(&p,sizeof(p),bl,target);
with
clif->send(&p,(sizeof(p)+2),bl,target);
. It works now, but I don't know what bytes of info I'm missing. Thanks for reading and sorry if report is a bit confusing.