这是18年7月写的，拿来填充一下😜

linux下的网络聊天室，服务端，c客户端，java客户端，Android端 基于TCP开发 源代码 附有udp socket 服务端 客户端

** 下载链接**

服务器端

  1void SendMsg(char *msg){
  2	  int i;
  3	  char tempmsg[286];
  4	  strcpy(tempmsg, msg);
  5	  char nowtime[10];
  6	  char sendbuffer[500] = {}; //最终消息发送
  7	  time_t t;
  8	  struct tm *lt;
  9	  time(&t);
 10	  lt = localtime(&t);
 11	  sprintf(nowtime, "[%d:%d:%d]", lt->tm_hour, lt->tm_min, lt->tm_sec);
 12
 13	  strcat(sendbuffer, nowtime);
 14	  strcat(sendbuffer, tempmsg);
 15	  for (i = 0; i < MAXNUM; ++i)
 16	  {
 17		  if (clientSock[i] != 0)
 18		  {
 19			  printf("发送至客户[ %d ]\n", clientSock[i]);
 20			  send(clientSock[i], sendbuffer, strlen(sendbuffer), 0);
 21		  }
 22	  }
 23
 24	  FILE * wfile = fopen("./allmsg.txt","a+");
 25	  fwrite(sendbuffer,strlen(sendbuffer),1,wfile);
 26	  fwrite("\n",strlen("\n"),1,wfile);
 27	  fclose(wfile);
 28	  printf("消息记录完毕\n");
 29	  printf("===================\n");
 30	  }
 31	  void *userthread(void *arg){
 32
 33	  //char sendmsg[300];
 34	  int usersock = *(int *)arg;
 35	  printf("客户 Socket[ %d ]:\n", usersock);
 36	  while (1)
 37	  {
 38		  char usermsg[286] = {};
 39		  //memset(sendmsg, 0, sizeof(sendmsg));
 40		  memset(usermsg, 0, sizeof(usermsg));
 41		  if (recv(usersock, usermsg, sizeof(usermsg), 0) <= 0)
 42		  {
 43			  int i;
 44			  for (i = 0; i < MAXNUM; ++i)
 45			  {
 46				  if (usersock == clientSock[i])
 47				  {
 48					  clientSock[i] = 0;
 49					  break;
 50				  }
 51			  }
 52
 53			  printf("用户 %d 已退出!\n", usersock);
 54			  pthread_exit((void *)i);
 55		  }
 56
 57		  if(strcmp(usermsg,"[online]")==0)
 58		  {
 59			  printf("%d客户端查询消息记录\n",usersock);
 60			  FILE * sendfile = fopen("./allmsg.txt","r");
 61			  char allmsg[1024*10]={};
 62			  char allmsgsend[1024*11] = {};
 63			  fread(allmsg,sizeof(allmsg),1,sendfile);
 64			  strcat(allmsgsend,"\n--------漫游记录--------\n");
 65			  strcat(allmsgsend,allmsg);
 66			  strcat(allmsgsend,"\n-------漫游记录查询完毕---\n");
 67			  send(usersock,allmsgsend,strlen(allmsgsend),0);
 68			  fclose(sendfile);
 69			  printf("==================\n");
 70			  continue;
 71		  }
 72		  SendMsg(usermsg);
 73	  }
 74}
 75
 76 int main(){
 77		severSock = socket(AF_INET, SOCK_STREAM, 0);
 78		struct sockaddr_in severAddr;
 79		memset(&severAddr, 0, sizeof(severAddr));
 80		severAddr.sin_family = AF_INET;
 81		severAddr.sin_addr.s_addr = inet_addr(IP);
 82		severAddr.sin_port = htons(PORT);
 83
 84		if (bind(severSock, (struct sockaddr *)&severAddr, sizeof(severAddr)) == -1)
 85		{
 86			perror("绑定失败！！！");
 87			exit(-1);
 88		}
 89		if (listen(severSock, MAXNUM) == -1)
 90		{
 91			perror("监听失败!!!");
 92			exit(-1);
 93		}
 94		printf("|****服务器启动成功****|\n");
 95		// struct sockaddr_in tempaddr;
 96		// socklen_t len = sizeof(tempaddr);
 97
 98		while (1)
 99		{
100			struct sockaddr_in tempaddr;
101			socklen_t len = sizeof(tempaddr);
102			//memset(&tempaddr, 0, sizeof(tempaddr));
103			int sockid = accept(severSock, (struct sockaddr *)&tempaddr, &len);
104			if (sockid == -1)
105			{
106				printf("客户端连接失败!!!\n");
107				continue;
108			}
109			int i = 0;
110			for (i = 0; i < MAXNUM; ++i)
111			{
112				if (clientSock[i] == 0)
113				{
114					clientSock[i] = sockid;
115					printf("新的客户端已连接，socket: %d\n", sockid);
116					pthread_t userthrd;
117					pthread_create(&userthrd, 0, userthread, &sockid);
118					break;
119				}
120
121				if (i == MAXNUM)
122				{
123					char *str = "不好意思，满员了。";
124					send(sockid, str, strlen(str), 0);
125					close(sockid);
126				}
127			}
128		}
129}