基於C/S架構的網絡聊天室

轉自：https://blog.csdn.net/xym_smart/article/details/78185944

 

服務器端

 

1. #include <stdio.h>

2. #include <string.h>

3. #include <sys/types.h>

4. #include <sys/socket.h>

5. #include <arpa/inet.h>

6. #include <pthread.h>

7. #include <sqlite3.h>

8. #include <time.h>

9. #include <sys/stat.h>

10. #include <fcntl.h>

11. #include <unistd.h>

12. #include "LinkList.h"

13.  

14. #define PORT 9999

15.  

16. typedef struct _msg

17. {

18. int cmd;

19. int flag;

20. char username[20];

21. char password[20];

22. char msg[1024];

23. char frname[20];

24. char toname[20];

25. char time[50];

26. char filename[20];

27. }Msg;

28.  

29. sqlite3 *database;

30.  

31. Node *head;

32.  

33. //初始化套接字，返回監聽套接字

34. int Init_Socket()

35. {

36. //創建套接字

37. int listen_socket = socket(AF_INET, SOCK_STREAM, 0);

38. if(listen_socket == -1)

39. {

40. perror("socket");

41. return -1;

42. }

43.  

44. //命名套接字

45. struct sockaddr_in addr;

46. memset(&addr, 0, sizeof(addr));

47. addr.sin_family = AF_INET;

48. addr.sin_port = htons(PORT);

49. addr.sin_addr.s_addr = htonl(INADDR_ANY);

50.  

51. int ret = bind(listen_socket, (struct sockaddr *)&addr, sizeof(addr));

52. if(ret == -1)

53. {

54. perror("bind");

55. return -1;

56. }

57.  

58. //監聽套接字

59. ret = listen(listen_socket, 5);

60. if(ret == -1)

61. {

62. perror("listen");

63. return -1;

64. }

65.  

66. printf("等待客戶端連接......\n");

67.  

68. return listen_socket;

69. }

70.  

71. //處理客戶端連接，返回與客戶端通信的套接字

72. int MyAccept(int listen_socket)

73. {

74. //接收套接字

75. struct sockaddr_in client_addr;

76. int len = sizeof(client_addr);

77.  

78. int client_socket = accept(listen_socket, (struct sockaddr *)&client_addr, &len);

79. if(client_socket == -1)

80. {

81. perror("accept");

82. return -1;

83. }

84.  

85. printf("成功接收一個客戶端：%s\n",inet_ntoa(client_addr.sin_addr));

86.  

87. return client_socket;

88. }

89.  

90. //註冊

91. void reg(int client_socket, Msg *msg)

92. {

93. char *errmsg = NULL;

94. char **resultp = NULL;

95. int nrow, ncolumn;

96. char *sql = "select * from login";

97. int ret = sqlite3_get_table(database, sql, &resultp, &nrow, &ncolumn, &errmsg);

98. if (ret != SQLITE_OK)

99. {

100. printf ("數據庫操作失敗：%s\n", errmsg);

101. return;

102. }

103. printf("查找成功\n");

104.  

105. int i;

106. for(i = 0;i < (nrow+1) * ncolumn;i++)

107. {

108. if(strcmp(resultp[i],msg->username) == 0)

109. {

110. printf("用戶已存在\n");

111. msg->cmd = -1;

112. write(client_socket,msg,sizeof(Msg));

113. return;

114. }

115. }

116.  

117. char buf[100];

118. sprintf (buf, "insert into login values('%s', '%s')", msg->username,msg->password);

119. ret = sqlite3_exec(database, buf, NULL, NULL, &errmsg);

120. if (ret != SQLITE_OK)

121. {

122. printf ("數據庫操作失敗：%s\n", errmsg);

123. return;

124. }

125. printf("%s用戶註冊成功\n",msg->username);

126.  

127. msg->cmd = 1001;

128.  

129. write(client_socket,msg,sizeof(Msg));

130. }

131.  

132. //用戶登錄

133. void login(int client_socket, Msg *msg)

134. {

135. char *errmsg = NULL;

136. char **resultp = NULL;

137. int nrow, ncolumn;

138. char *sql = "select * from login";

139. int ret = sqlite3_get_table(database, sql, &resultp, &nrow, &ncolumn, &errmsg);

140. if (ret != SQLITE_OK)

141. {

142. printf ("數據庫操作失敗：%s\n", errmsg);

143. return;

144. }

145. printf("查找成功\n");

146.  

147. int i;

148. for(i = 0;i < (nrow+1) * ncolumn;i++)

149. {

150. if(strcmp(resultp[i],msg->username) == 0 && strcmp(resultp[i+1],msg->password) == 0)

151. {

152. printf("%s登錄成功\n",msg->username);

153. User user;

154. strcpy(user.username,msg->username);

155. user.client_socket = client_socket;

156. Insert_Last(head,user);

157. Display(head);

158. msg->cmd = 1002;

159. write(client_socket,msg,sizeof(Msg));

160. return;

161. }

162. }

163.  

164. msg->cmd = -2;

165. printf("用戶名或密碼錯誤，%s登錄失敗\n",msg->username);

166. write(client_socket,msg,sizeof(Msg));

167. }

168.  

169. //顯示在線好友列表

170. void Display_Friend(int client_socket,Msg *msg)

171. {

172. Node* tmp = head->next;

173. while(tmp)

174. {

175. strcpy(msg->username,tmp->data.username);

176. write(client_socket,msg,sizeof(Msg));

177. tmp = tmp->next;

178. }

179. }

180.  

181. //羣聊

182. void chat_all(int client_socket,Msg *msg)

183. {

184. Node* tmp = head->next;

185. Node* tmp1 = head->next;

186.  

187. while(tmp1)

188. {

189. if(tmp1->data.client_socket == client_socket)

190. {

191. strcpy(msg->frname,tmp1->data.username);

192. break;

193. }

194. tmp1 = tmp1->next;

195. }

196. strcpy(msg->toname,"all");

197. printf("%s發了一次羣消息\n",msg->frname);

198.  

199. while(tmp)

200. {

201. write(tmp->data.client_socket,msg,sizeof(Msg));

202. tmp = tmp->next;

203. }

204. }

205.  

206. //私聊

207. void chat_along(int client_socket,Msg *msg)

208. {

209. Node* tmp1 = head->next;

210. Node* tmp2 = head->next;

211.  

212. while(tmp1)

213. {

214. if(tmp1->data.client_socket == client_socket)

215. {

216. strcpy(msg->frname,tmp1->data.username);

217. break;

218. }

219. tmp1 = tmp1->next;

220. }

221. printf("%s發給%s一條消息\n",msg->frname,msg->toname);

222.  

223. while(tmp2)

224. {

225. if(strcmp(tmp2->data.username,msg->toname) == 0)

226. {

227. msg->flag = 101;

228. write(tmp2->data.client_socket,msg,sizeof(Msg));

229. return;

230. }

231. tmp2 = tmp2->next;

232. }

233.  

234. if(tmp2 == NULL)

235. {

236. msg->flag = -101;

237. write(client_socket,msg,sizeof(Msg));

238. printf("您要發送的好友不存在\n");

239. return;

240. }

241. }

242.  

243. //註銷

244. void logout(int client_socket,Msg *msg)

245. {

246. Node *tmp = head;

247. while(tmp->next)

248. {

249. if(tmp->next->data.client_socket == client_socket)

250. {

251. strcpy(msg->frname,tmp->next->data.username);

252. Node *p = tmp->next;

253. tmp->next = p->next;

254. free(p);

255. break;

256. }

257. }

258.  

259. char buf[100];

260. char *errmsg = NULL;

261. sprintf (buf, "delete from login where username = '%s'",msg->frname);

262. int ret = sqlite3_exec(database, buf, NULL, NULL, &errmsg);

263. if (ret != SQLITE_OK)

264. {

265. printf ("數據庫操作失敗：%s\n", errmsg);

266. return;

267. }

268.  

269. write(client_socket,msg,sizeof(Msg));

270. }

271.  

272. //文件傳輸

273. void file_transfer(int client_socket,Msg *msg)

274. {

275. Node *tmp1 = head->next;

276. Node *tmp2 = head->next;

277.  

278. while(tmp1)

279. {

280. if(tmp1->data.client_socket == client_socket)

281. {

282. strcpy(msg->frname,tmp1->data.username);

283. break;

284. }

285. tmp1 = tmp1->next;

286. }

287.  

288. while(tmp2)

289. {

290. if(strcmp(tmp2->data.username,msg->toname) == 0)

291. {

292. if(strcmp(msg->msg,"over") != 0)

293. {

294. msg->flag = 101;

295. usleep(15);

296. write(tmp2->data.client_socket,msg,sizeof(Msg));

297. return;

298. }

299. else

300. {

301. msg->flag = 102;

302. printf("%s給%s發了一個文件\n",msg->frname,msg->toname);

303. write(tmp2->data.client_socket,msg,sizeof(Msg));

304. return;

305. }

306. }

307. tmp2 = tmp2->next;

308. }

309.  

310. if(tmp2 == NULL)

311. {

312. msg->flag = -101;

313. write(client_socket,msg,sizeof(Msg));

314. printf("您要發送的好友不存在\n");

315. return;

316. }

317. }

318.  

319. //退出

320. void user_quit(int client_socket,Msg *msg)

321. {

322. Node *tmp = head;

323. while(tmp->next)

324. {

325. if(tmp->next->data.client_socket == client_socket)

326. {

327. strcpy(msg->frname,tmp->next->data.username);

328. Node *p = tmp->next;

329. tmp->next = p->next;

330. free(p);

331. break;

332. }

333. }

334. printf("%s退出登錄\n",msg->frname);

335. write(client_socket,msg,sizeof(Msg));

336. }

337.  

338. //處理客戶端通信的線程工作函數

339. void *handle_client(void* v)

340. {

341. int client_socket = (int)v;

342. Msg msg;

343.  

344. while(1)

345. {

346. // 從客戶端讀一個結構體數據

347. int ret = read(client_socket, &msg, sizeof(Msg));

348. if (ret == -1)

349. {

350. perror ("read");

351. break;

352. }

353.  

354. // 代表客戶端退出

355. if (ret == 0)

356. {

357. printf ("客戶端退出\n");

358. break;

359. }

360.  

361. switch (msg.cmd)

362. {

363. case 1:// 客戶端進行註冊

364. reg(client_socket, &msg);

365. break;

366. case 2:// 登錄

367. login(client_socket,&msg);

368. break;

369. case 3://在線好友顯示

370. Display_Friend(client_socket,&msg);

371. break;

372. case 4://羣聊

373. chat_all(client_socket,&msg);

374. break;

375. case 5://私聊

376. chat_along(client_socket,&msg);

377. break;

378. case 6://註銷

379. logout(client_socket,&msg);

380. break;

381. case 7://退出

382. user_quit(client_socket,&msg);

383. break;

384. case 8://文件傳輸

385. file_transfer(client_socket,&msg);

386. break;

387. }

388. }

389.  

390. close(client_socket);

391. }

392.  

393. int main()

394. {

395. //打開數據庫

396. int ret = sqlite3_open("chatroom.db", &database);

397. if (ret != SQLITE_OK)

398. {

399. printf ("打開數據庫失敗\n");

400. return -1;

401. }

402. printf("數據庫打開成功\n");

403.  

404. //創建用戶登錄表

405. char *errmsg = NULL;

406. char *sql = "create table if not exists login(username TEXT,password TEXT)";

407. ret = sqlite3_exec(database, sql, NULL, NULL, &errmsg);

408. if (ret != SQLITE_OK)

409. {

410. printf ("數據庫操作失敗：%s\n", errmsg);

411. return -1;

412. }

413. printf("用戶登錄表創建成功\n");

414.  

415. //創建好友鏈表

416. head = Create_List();

417. if(head == NULL)

418. {

419. printf("鏈表創建失敗\n");

420. return -1;

421. }

422. printf("鏈表創建成功\n");

423.  

424. //初始化套接字

425. int listen_socket = Init_Socket();

426.  

427. while(1)

428. {

429. //獲取與客戶端連接的套接字

430. int client_socket = MyAccept(listen_socket);

431.  

432. pthread_t pthread_id;

433. int ret = pthread_create(&pthread_id, NULL, handle_client,(void*)client_socket);

434. if(ret != 0)

435. {

436. perror("pthread_create");

437. return -1;

438. }

439.  

440. pthread_detach(pthread_id);

441. }

442.  

443. Clean_List(head);

444. Destroy(head);

445. close(listen_socket);

446. sqlite3_close(database);

447.  

448. return 0;

449. }

 

客戶端

 

1. #include <stdio.h>

2. #include <string.h>

3. #include <sys/types.h>

4. #include <sys/socket.h>

5. #include <arpa/inet.h>

6. #include <time.h>

7. #include <sqlite3.h>

8. #include <string.h>

9. #include <sys/stat.h>

10. #include <fcntl.h>

11. #include <unistd.h>

12. #include "LinkList.h"

13.  

14. typedef struct _msg

15. {

16. int cmd;

17. int flag;

18. char username[20];

19. char password[20];

20. char msg[1024];

21. char frname[20];

22. char toname[20];

23. char time[50];

24. char filename[20];

25. }Msg;

26.  

27. sqlite3 *database;

28.  

29. //與服務器連接，返回與服務器通信的套接字

30. int MyConnect(char *argv[])

31. {

32. int socketfd = socket(AF_INET, SOCK_STREAM, 0);

33. if(socketfd == -1)

34. {

35. perror("socket");

36. return -1;

37. }

38.  

39. struct sockaddr_in addr;

40. memset(&addr, 0, sizeof(addr));

41. addr.sin_family = AF_INET;

42. addr.sin_port = htons(atoi(argv[2]));

43. inet_aton(argv[1],&(addr.sin_addr));

44.  

45. int ret = connect(socketfd, (struct sockaddr *)&addr, sizeof(addr));

46. if (ret == -1)

47. {

48. perror ("connect");

49. return -1;

50. }

51.  

52. printf ("成功連上服務器\n");

53.  

54. return socketfd;

55. }

56.  

57. void Ask_UserServer(int socketfd);

58.  

59. //登錄界面

60. void interface()

61. {

62. time_t Time = time(NULL);

63. char *buf = ctime(&Time);

64.  

65. system("clear");

66. printf("%s",buf);

67. printf("|****************************|\n");

68. printf("| 歡迎使用 |\n");

69. printf("|****************************|\n");

70. printf("| 1、用戶註冊 |\n");

71. printf("| 2、用戶登錄 |\n");

72. printf("| 3、退出 |\n");

73. printf("|****************************|\n");

74. printf("請輸入您要進行的操作:\n");

75. }

76.  

77. //用戶界面

78. void userface()

79. {

80. time_t Time = time(NULL);

81. char *buf = ctime(&Time);

82.  

83. system("clear");

84. printf("%s",buf);

85. printf("|****************************|\n");

86. printf("| 主菜單 |\n");

87. printf("|****************************|\n");

88. printf("| 1、顯示在線好友 |\n");

89. printf("| 2、羣聊 |\n");

90. printf("| 3、私聊 |\n");

91. printf("| 4、查看聊天記錄 |\n");

92. printf("| 5、用戶註銷 |\n");

93. printf("| 6、文件傳輸 |\n");

94. printf("| 7、退出 |\n");

95. printf("|****************************|\n");

96. printf("請輸入您要進行的操作:\n");

97. }

98.  

99. //在線好友顯示

100. void Display_Friend(int socketfd)

101. {

102. Msg msg;

103. msg.cmd = 3;

104. write (socketfd, &msg, sizeof(msg));

105. }

106.  

107. //羣聊

108. void chat_all(int socketfd)

109. {

110. Msg msg;

111. msg.cmd = 4;

112. printf ("請輸入要發送的內容: \n");

113. fgets(msg.msg, 1024, stdin);

114. write (socketfd, &msg, sizeof(msg));

115. }

116.  

117. //私聊

118. void chat_along(int socketfd)

119. {

120. Msg msg;

121. msg.cmd = 5;

122. printf("請輸入您要發送的對象:\n");

123. scanf("%s",msg.toname);

124. while(getchar() != '\n');

125.  

126. printf ("請輸入要發送的內容: \n");

127. fgets(msg.msg, 1024, stdin);

128.  

129. write (socketfd, &msg, sizeof(msg));

130. }

131.  

132. //將數據插入本地數據庫

133. void insert_records(sqlite3 *database,Msg msg)

134. {

135. char buf[100];

136. char *errmsg = NULL;

137. sprintf (buf, "insert into records values('%s', '%s', '%s','%s')",msg.time,msg.frname,msg.toname,msg.msg);

138. int ret = sqlite3_exec(database, buf, NULL, NULL, &errmsg);

139. if (ret != SQLITE_OK)

140. {

141. printf ("數據庫操作失敗：%s\n", errmsg);

142. return;

143. }

144. }

145.  

146. //查看聊天記錄

147. void get_records(sqlite3 *database)

148. {

149. char *errmsg = NULL;

150. char **resultp = NULL;

151. int nrow, ncolumn;

152. char *sql = "select * from records";

153. int ret = sqlite3_get_table(database, sql, &resultp, &nrow, &ncolumn, &errmsg);

154. if (ret != SQLITE_OK)

155. {

156. printf ("數據庫操作失敗：%s\n", errmsg);

157. return;

158. }

159.  
160.  

161. int i;

162. for (i = 0; i < (nrow+1)*ncolumn; i++)

163. {

164. if (i % ncolumn == 0)

165. printf ("\n");

166. printf ("%-26s", resultp[i]);

167. }

168. printf ("\n");

169. }

170.  

171. //用戶註銷

172. void logout(int socketfd)

173. {

174. Msg msg;

175. msg.cmd = 6;

176. write (socketfd, &msg, sizeof(msg));

177. }

178.  

179. //文件傳輸

180. void file_transfer(int socketfd)

181. {

182. Msg msg;

183. msg.cmd = 8;

184. printf("請輸入您要發送的對象:\n");

185. scanf("%s",msg.toname);

186. while(getchar() != '\n');

187.  

188. printf("當前文件夾下的文件：\n");

189. system("ls");

190. printf ("請輸入要發送的文件: \n");

191. fgets(msg.filename, 20, stdin);

192.  

193. char *tmp = msg.filename;

194. while(tmp)

195. {

196. if(*tmp == '\n')

197. {

198. *tmp = '\0';

199. break;

200. }

201. tmp++;

202. }

203.  

204. //printf("%s",msg.filename);

205. FILE *fp1 = fopen(msg.filename, "r");

206. if (fp1 == NULL)

207. {

208. perror ("fopen fp1");

209. return;

210. }

211.  

212. int ret;

213. while (ret = fread(msg.msg, sizeof(char), 1023, fp1))

214. {

215. msg.msg[1023] = '\0';

216. //sleep(2);

217. //printf("%s",msg.msg);

218. usleep(15);

219. write(socketfd, &msg, sizeof(msg));

220. memset(msg.msg,0,1024);

221. }

222.  

223. if(ret == 0 && !feof(fp1))

224. {

225. perror ("fread");

226. return;

227. }

228.  

229. strcpy(msg.msg,"over");

230. write(socketfd, &msg, sizeof(msg));

231. fclose(fp1);

232. }

233.  

234. void receive_file(Msg *msg)

235. {

236. FILE *fp2 = fopen("2.ppt", "a");

237. if (fp2 == NULL)

238. {

239. perror ("fopen fp2");

240. return;

241. }

242.  

243. fwrite(msg->msg,sizeof(char),1023,fp2);

244.  

245. fclose(fp2);

246. }

247.  

248. //退出登錄

249. void user_quit(int socketfd)

250. {

251. Msg msg;

252. msg.cmd = 7;

253. write (socketfd, &msg, sizeof(msg));

254. }

255.  

256. //讀寫分離

257. void * readMsg(void *v)

258. {

259. int socketfd = (int)v;

260. Msg msg;

261. while (1)

262. {

263. read (socketfd, &msg, sizeof(msg));

264.  

265. time_t Time = time(NULL);

266. char *buf = ctime(&Time);

267. *(buf+24) = '\0';

268. strcpy(msg.time,buf);

269.  

270. switch(msg.cmd)

271. {

272. case 3:

273. printf("在線好友：%s\n",msg.username);

274. break;

275. case 4:

276. printf("%s %s發了一條羣消息： %s\n",msg.time,msg.frname,msg.msg);

277. insert_records(database,msg);

278. break;

279. case 5:

280. if(msg.flag == 101)

281. {

282. printf("%s %s給您發了一條消息：%s",msg.time,msg.frname,msg.msg);

283. insert_records(database,msg);

284. }

285. else if(msg.flag == -101)

286. printf("您要發送的好友不存在\n");

287. break;

288. case 6:

289. printf("註銷成功\n");

290. printf("按回車鍵返回......\n");

291. return;

292. case 7:

293. printf("退出成功\n");

294. printf("按回車鍵返回......\n");

295. return;

296. case 8:

297. if(msg.flag == 101)

298. {

299. receive_file(&msg);

300. }

301. else if(msg.flag == 102)

302. {

303. printf("%s 給您發送了一個文件\n",msg.frname);

304. }

305. else if(msg.flag == -101)

306. printf("您要發送的好友不存在\n");

307. break;

308. }

309. }

310. }

311.  

312. //註冊

313. void reg(int socketfd)

314. {

315. Msg msg;

316. char username[20];

317. char password[20];

318. msg.cmd = 1;

319. printf("請輸入用戶名:");

320. //getchar();

321. //fgets(username,20,stdin);

322. scanf("%s",username);

323. strcpy(msg.username,username);

324. printf("請輸入密碼:");

325. //getchar();

326. //fgets(password,20,stdin);

327. scanf("%s",password);

328. strcpy(msg.password,password);

329.  

330. write(socketfd,&msg,sizeof(Msg));

331.  

332. read(socketfd,&msg,sizeof(Msg));

333.  

334. if(msg.cmd == -1)

335. {

336. printf("用戶已存在，註冊失敗\n");

337. return;

338. }

339. else if(msg.cmd == 1001)

340. printf("註冊成功\n");

341. }

342.  

343. //登錄

344. void login(int socketfd)

345. {

346. Msg msg;

347. char username[20];

348. char password[20];

349. msg.cmd = 2;

350. printf("請輸入用戶名:");

351. scanf("%s",username);

352. strcpy(msg.username,username);

353. printf("請輸入密碼:");

354. scanf("%s",password);

355. strcpy(msg.password,password);

356.  

357. write(socketfd,&msg,sizeof(Msg));

358.  

359. read(socketfd,&msg,sizeof(Msg));

360.  

361. if(msg.cmd == -2)

362. {

363. printf("用戶名或密碼錯誤，登陸失敗\n");

364. return;

365. }

366.  

367. else if(msg.cmd == 1002)

368. printf("登錄成功\n");

369.  

370. pthread_t id;

371. pthread_create(&id, NULL, readMsg, (void *)socketfd);

372.  

373. pthread_detach(id);

374.  

375. sleep(2);

376.  

377. Ask_UserServer(socketfd);

378. }

379.  

380. //註冊、登錄服務

381. void Ask_Server(int socketfd)

382. {

383. int choice;

384. while(1)

385. {

386. interface();

387. scanf("%d",&choice);

388.  

389. switch(choice)

390. {

391. case 1:

392. reg(socketfd);

393. getchar();

394. sleep(2);

395. break;

396. case 2:

397. login(socketfd);

398. getchar();

399. sleep(2);

400. break;

401. case 3:

402. return;

403. default:

404. break;

405. }

406. }

407. }

408.  

409. //用戶服務

410. void Ask_UserServer(int socketfd)

411. {

412. int choice;

413. while(1)

414. {

415. userface();

416. scanf("%d",&choice);

417. while(getchar()!= '\n');

418.  

419. switch(choice)

420. {

421. case 1:

422. Display_Friend(socketfd);

423. getchar();

424. break;

425. case 2:

426. chat_all(socketfd);

427. getchar();

428. break;

429. case 3:

430. chat_along(socketfd);

431. getchar();

432. break;

433. case 4:

434. get_records(database);

435. getchar();

436. break;

437. case 5:

438. logout(socketfd);

439. return;

440. case 6:

441. file_transfer(socketfd);

442. break;

443. case 7:

444. user_quit(socketfd);

445. return;

446. }

447. }

448. }

449.  

450. int main(int argc, char *argv[])

451. {

452. //打開數據庫

453. int ret = sqlite3_open("chatroom.db", &database);

454. if (ret != SQLITE_OK)

455. {

456. printf ("打開數據庫失敗\n");

457. return -1;

458. }

459.  

460. //創建本地聊天記錄表

461. char *errmsg = NULL;

462. char *sql = "create table if not exists records(time TEXT,frname TEXT,toname TEXT,msg TEXT)";

463. ret = sqlite3_exec(database, sql, NULL, NULL, &errmsg);

464. if (ret != SQLITE_OK)

465. {

466. printf ("數據庫操作失敗：%s\n", errmsg);

467. return -1;

468. }

469.  

470. int socketfd = MyConnect(argv);

471.  

472. Ask_Server(socketfd);

473.  

474. close(socketfd);

475. sqlite3_close(database);

476.  

477. return 0;

478. }