socket也就不介绍了，相关的都很多，可以在在网上搜。环境是本机为win10，再虚拟一台Ubantu作为linux环境。下面是DEMO。
注意 : windos 与 Linux系统有编码差异，windos为GBK, Linux为utf-8,通信时按各自需要转换编码，这里采用通用UTF-8格式。
1、Linux_C服务端
1 #include <sys/types.h>
2 #include <sys/socket.h>
3 #include <stdio.h>
4 #include <netinet/in.h>
5 #include <arpa/inet.h>
6 #include <unistd.h>
7 #include <string.h>
8 #include <stdlib.h>
9 #include <fcntl.h>
10 #include <sys/shm.h>
11
12 #define MYPORT 8887
13 #define QUEUE 20
14 #define BUFFER_SIZE 1024
15 #define RETURN_BUFFER_SIZE 102400
16
17 int main()
18 {
19 ///定义sockfd
20 /*
21 --------domain用于指定创建套接字所使用的协议族
22 AF_UNIX # 创建只在本机进行通信的套接字；
23 AF_INET # 使用IPv4TCP/IP协议；
24 AF_INET6 # 使用IPv6TCP/IP协议
25 ---------type用于指定套接字的类型。
26 SOCK_STREAM # 创建TCP流套接字；
27 SOCK_DGRAM # 创建DUP套接字；
28 SOCK_RAW # 创建原始套接字；
29 ----------protocol通常设定为0，表示通过参数domain指定的协议族和参数type指定的套接字类型来确定使用的协议。
30 */
31 int server_sockfd = socket(AF_INET,SOCK_STREAM, 0);
32
33 ///定义sockaddr_in
34 struct sockaddr_in server_sockaddr;
35 server_sockaddr.sin_family = AF_INET;
36 server_sockaddr.sin_port = htons(MYPORT);
37 server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);
38
39 ///bind，成功返回0，出错返回-1
40 if(bind(server_sockfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr))==-1)
41 {
42 perror("bind");
43 exit(1);
44 }
45
46 ///listen，成功返回0，出错返回-1
47 if(listen(server_sockfd,QUEUE) == -1)
48 {
49 perror("listen");
50 exit(1);
51 }
52
53 ///客户端套接字
54 char buffer[BUFFER_SIZE];
55 char returnBuffer[RETURN_BUFFER_SIZE];
56 struct sockaddr_in client_addr;
57 socklen_t length = sizeof(client_addr);
58
59 printf("socket server is started! \n");
60 ///成功返回非负描述字，出错返回-1
61 int conn = accept(server_sockfd, (struct sockaddr*)&client_addr, &length);
62 if(conn<0)
63 {
64 perror("connect");
65 exit(1);
66 }
67
68 printf("a Client connected : %u \n",client_addr.sin_addr.s_addr);
69
70 while(1)
71 {
72 int exitMark = 0;
73 memset(buffer,0,sizeof(buffer));
74 int len = recv(conn, buffer, sizeof(buffer),0);
75
76
77 if(strcmp(buffer,"exit\n")==0)
78 {
79 exitMark = 1;
80 // attachMsg = "服务器被指定命令[exit]成功关闭!";
81 // break;
82 }
83 else
84 {
85 // attachMsg = " this Msg by server send!";
86 }
87
88 // strcpy(attachMsg+strlen(attachMsg),buffer);
89 printf("GetMsg: %s",buffer);
90
91 // fputs(buffer, stdout);
92 send(conn, buffer, len, 0);
93
94 if(exitMark)
95 {
96 printf("socket server is closed! \n");
97 break;
98 }
99 }
100
101
102 close(conn);
103 close(server_sockfd);
104
105 return 0;
106 } View Code
2、Linux_C客户端
1 #include <sys/types.h>
2 #include <sys/socket.h>
3 #include <stdio.h>
4 #include <netinet/in.h>
5 #include <arpa/inet.h>
6 #include <unistd.h>
7 #include <string.h>
8 #include <stdlib.h>
9 #include <fcntl.h>
10 #include <sys/shm.h>
11
12 #define MYPORT 8887
13 #define BUFFER_SIZE 1024
14
15 int main()
16 {
17 ///定义sockfd
18 int sock_cli = socket(AF_INET,SOCK_STREAM, 0);
19
20 ///定义sockaddr_in
21 struct sockaddr_in servaddr;
22 memset(&servaddr, 0, sizeof(servaddr));
23 servaddr.sin_family = AF_INET;
24 servaddr.sin_port = htons(MYPORT); ///服务器端口
25 servaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); ///服务器ip
26
27 ///连接服务器，成功返回0，错误返回-1
28 if (connect(sock_cli, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0)
29 {
30 perror("connect");
31 exit(1);
32 }
33
34 char sendbuf[BUFFER_SIZE];
35 char recvbuf[BUFFER_SIZE];
36 while (fgets(sendbuf, sizeof(sendbuf), stdin) != NULL)
37 {
38 send(sock_cli, sendbuf, strlen(sendbuf),0); ///发送
39 if(strcmp(sendbuf,"exit\n")==0)
40 break;
41 recv(sock_cli, recvbuf, sizeof(recvbuf),0); ///接收
42 // fputs(recvbuf, stdout);
43 printf("Client GetMsg: %s",recvbuf);
44 memset(sendbuf, 0, sizeof(sendbuf));
45 memset(recvbuf, 0, sizeof(recvbuf));
46 }
47
48 close(sock_cli);
49 return 0;
50 } View Code
3、Windos_C#客户端
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6 using System.Net.Sockets;
7 using System.IO;
8 using System.Net;
9
10
11 namespace socketClientForLinuxC
12 {
13 class Program
14 {
15 static void Main(string[] args)
16 {
17 string sendMsg = string.Empty;
18 string recvMsg = string.Empty;
19 int sendMark = 0;
20
21 IPAddress address = IPAddress.Parse("192.168.30.137");
22 IPEndPoint iep = new IPEndPoint(address, 8887);
23 //创建一个Socket
24 Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
25 socket.Connect(iep);
26
27 while (true)
28 {
29 sendMsg = Console.ReadLine();
30 if (sendMsg.Equals("exit"))
31 {
32 sendMark = 1;
33 }
34
35 byte[] bs = Encoding.UTF8.GetBytes(sendMsg);
36 socket.Send(bs, bs.Length, 0);
37
38 byte[] recvBytes = new byte[1024];
39 int bytes;
40
41 //从服务器端接受返回信息
42 bytes = socket.Receive(recvBytes, recvBytes.Length, 0);
43 recvMsg = Encoding.UTF8.GetString(recvBytes, 0, bytes);
44
45
46 if (sendMark == 1) break;
47 Console.WriteLine(recvMsg);
48 }
49
50 socket.Close();
51
52 Console.ReadKey();
53 }
54 }
55 } View Code
转载于:https://www.cnblogs.com/hzer/p/5447075.html
![【Tomcat】Tomcat参数调优:连接数和并发数[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)