1 | /* |
1 | /* |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
7 | * |
7 | * |
8 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
8 | * Crossfire TRT is free software: you can redistribute it and/or modify |
9 | * under the terms of the GNU General Public License as published by the Free |
9 | * it under the terms of the GNU General Public License as published by |
10 | * Software Foundation; either version 2 of the License, or (at your option) |
10 | * the Free Software Foundation, either version 3 of the License, or |
11 | * any later version. |
11 | * (at your option) any later version. |
12 | * |
12 | * |
13 | * This program is distributed in the hope that it will be useful, but |
13 | * This program is distributed in the hope that it will be useful, |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * for more details. |
16 | * GNU General Public License for more details. |
17 | * |
17 | * |
18 | * You should have received a copy of the GNU General Public License along |
18 | * You should have received a copy of the GNU General Public License |
19 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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21 | * |
20 | * |
22 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
21 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
23 | */ |
22 | */ |
24 | |
23 | |
25 | /** |
24 | /** |
… | |
… | |
157 | draw_client_map (pl); |
156 | draw_client_map (pl); |
158 | |
157 | |
159 | if (update_look) |
158 | if (update_look) |
160 | esrv_draw_look (pl); |
159 | esrv_draw_look (pl); |
161 | |
160 | |
162 | if (askface.empty () && !partial_face_ofs) |
161 | bool overload = false; |
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162 | |
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163 | #if HAVE_TCP_INFO |
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164 | // do bandwidth checking |
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165 | if (tcpi.tcpi_unacked + 1 > max (4, tcpi.tcpi_snd_cwnd)) |
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166 | { |
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167 | overload = true; |
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168 | if (next_rate_adjust <= NOW) |
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169 | { |
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170 | next_rate_adjust = NOW + 2; |
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171 | max_rate = max (max_rate >> 1, int (5000 * TICK)); |
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172 | LOG (llevDebug, "tcp %s overloaded (%d + 1 > 4 | %d), rate now %d\n", |
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173 | host, (int)tcpi.tcpi_unacked, (int)tcpi.tcpi_snd_cwnd, int (max_rate / TICK));//D |
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174 | send_packet_printf ("drawinfo %d Due to possible network congestion, your output-rate has been reduced to %dbps.", |
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175 | NDI_RED, int (max_rate / TICK)); |
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176 | } |
163 | { |
177 | } |
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178 | #endif |
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179 | |
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180 | if (!overload) |
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181 | { |
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182 | if (ixface.empty ()) |
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183 | { |
164 | // regularly send a new face when queue is empty |
184 | // regularly send a new face when queue is empty |
165 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
185 | if (bg_scrub && !--bg_scrub && enable_bg_scrub) |
166 | while (scrub_idx < faces.size () - 1) |
186 | while (scrub_idx < faces.size () - 1) |
167 | { |
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168 | ++scrub_idx; |
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169 | if (!faces_sent [scrub_idx]) |
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170 | { |
187 | { |
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188 | ++scrub_idx; |
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189 | |
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190 | if (!faces_sent [scrub_idx]) |
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191 | if (faceinfo *f = face_info (scrub_idx)) |
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192 | if (f->type == FT_FACE) // only scrub faces for now |
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193 | { |
171 | send_face (scrub_idx); |
194 | send_face (scrub_idx, -120); |
172 | flush_fx (); |
195 | flush_fx (); |
173 | |
196 | |
174 | bg_scrub = 1; // send up to one face per tick, unless an image was requested |
197 | bg_scrub = 1; // send up to one face per tick, unless an image was requested |
175 | break; |
198 | break; |
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199 | } |
176 | } |
200 | } |
177 | } |
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178 | |
201 | |
179 | rate_avail = max_rate - outputbuffer_len (); |
202 | rate_avail = max_rate - outputbuffer_len (); |
180 | } |
203 | } |
181 | else |
204 | else |
182 | { |
205 | { |
183 | int ol = outputbuffer_len (); |
206 | int ol = outputbuffer_len (); |
184 | |
207 | |
185 | rate_avail = min (max_rate, rate_avail + max_rate); |
208 | rate_avail = min (max_rate, rate_avail + max_rate); |
186 | rate_avail -= ol; |
209 | rate_avail -= ol; |
187 | |
210 | |
188 | int avail = rate_avail; |
211 | int avail = rate_avail; |
189 | |
212 | |
190 | // if we can split images, transfer up to mss packets if possible |
213 | // if we can split images, transfer up to mss-sized packets if possible |
191 | // but never more 768 bytes more. |
214 | // but never 768 bytes more. |
192 | if (fxix) avail += min (768, mss - (ol % mss)); |
215 | if (fxix) avail += min (768, mss - (ol % mss)); |
193 | |
216 | |
194 | bg_scrub = BG_SCRUB_RATE; |
217 | bg_scrub = BG_SCRUB_RATE; |
195 | |
218 | |
196 | while (avail > 0) |
219 | while (avail > 0) |
197 | { |
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198 | if (partial_face_ofs) |
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199 | { |
220 | { |
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221 | ixsend &ix = ixface.back (); |
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222 | |
200 | if (facedata *d = face_data (partial_face, faceset)) |
223 | if (facedata *d = face_data (ix.idx, faceset)) |
201 | { |
224 | { |
202 | // 9 bytes is enough for fx_FFFOOO, 40 leaves some room |
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203 | int chunk = min (min (avail - 40, MAXSOCKBUF - 9), partial_face_ofs); |
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204 | |
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205 | if (chunk <= 0) |
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206 | break; |
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207 | |
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208 | partial_face_ofs -= chunk; |
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209 | |
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210 | packet sl ("ix"); |
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211 | |
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212 | sl << ber32 (partial_face) |
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213 | << ber32 (partial_face_ofs) |
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214 | << data (d->data.data () + partial_face_ofs, chunk); |
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215 | |
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216 | send_packet (sl); |
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217 | } |
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218 | else |
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219 | partial_face_ofs = 0; |
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220 | } |
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221 | else if (!askface.empty ()) |
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222 | { |
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223 | // use a lifo to send most recently requested images |
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224 | faceidx facenum = askface.back (); |
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225 | askface.pop_back (); |
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226 | |
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227 | if (fxix) |
225 | if (fxix) |
228 | { |
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229 | if (facedata *d = face_data (facenum, faceset)) |
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230 | { |
226 | { |
231 | partial_face = facenum; |
227 | // only transfer something if the amount of data transferred |
232 | partial_face_ofs = d->data.size (); |
228 | // has a healthy relation to the header overhead |
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229 | if (avail <= 40) |
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230 | break; |
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231 | |
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232 | // 9 bytes is enough for fx_FFFOOO |
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233 | int chunk = min (min (avail, MAXSOCKBUF - 9), (int)ix.ofs); |
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234 | |
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235 | if (chunk <= 0) |
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236 | break; |
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237 | |
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238 | ix.ofs -= chunk; |
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239 | |
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240 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
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241 | |
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242 | packet sl ("ix"); |
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243 | |
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244 | sl << ber32 (ix.idx) |
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245 | << ber32 (ix.ofs) |
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246 | << data (d->data.data () + ix.ofs, chunk); |
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247 | |
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248 | send_packet (sl); |
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249 | } |
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250 | else |
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251 | { |
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252 | send_image (ix.idx); |
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253 | ix.ofs = 0; |
233 | } |
254 | } |
234 | } |
255 | } |
235 | else |
256 | else |
236 | send_image (facenum); |
257 | ix.ofs = 0; |
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258 | |
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259 | int consumed = outputbuffer_len () - ol; |
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260 | |
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261 | avail -= consumed; |
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262 | rate_avail -= consumed; |
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263 | |
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264 | ol = outputbuffer_len (); |
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265 | |
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266 | if (!ix.ofs) |
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267 | { |
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268 | ixface.pop_back (); |
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269 | |
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270 | if (ixface.empty ()) |
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271 | break; |
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272 | } |
237 | } |
273 | } |
238 | else |
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239 | break; |
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240 | |
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241 | int consumed = ol - outputbuffer_len (); |
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242 | avail -= consumed; |
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243 | rate_avail -= consumed; |
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244 | } |
274 | } |
245 | } |
275 | } |
246 | } |
276 | } |
247 | |
277 | |