一个简单的Linux下的socket程序 by C
server ---by C:
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
//#include <netinet/in.h>
//int recv(int s, void *buf, int len, unsigned int flags);
// recv() 用于接受socket传来的数据, 并把数据存到有参数buf指定的内存空间, 参数len为接受数据的最大长度
//int recvfrom(int s, void *buf, int len, unsigned int flags, struct )
int main()
{
// 创建套接字 socket
int server_sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
// 绑定ip 端口
struct sockaddr_in serv_addr;
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;// IPV4
serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); // ip
serv_addr.sin_port = htons(1231);
bind(server_sock, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
// listen
listen(server_sock, 20);
struct sockaddr_in clnt_addr;
socklen_t clnt_addr_size = sizeof(clnt_addr);
printf("wait for connect~~~\n");
while (1)
{
int clnt_sock = accept(server_sock, (struct sockaddr*)&clnt_addr, &clnt_addr_size);
// recv message
char buf[1024];
read(clnt_sock, buf, 1024);
printf("python: %s\n", buf);
char str[1024] = "";// = "hello world, this is from C!";
printf("C:");
scanf("%c", str);
write(clnt_sock, str, sizeof(str));
close(clnt_sock);
}
// printf("client addr: %c", clnt_addr)
// close(clnt_sock);
// close(server_sock);
return 0;
}
client---by python:
from socket import *
import sys
if len(sys.argv) < 2:
print("error! need port")
sys.exit(-1)
try:
port = int(sys.argv[1])
except:
raise 'error'
while 1:
clientSocket = socket(AF_INET, SOCK_STREAM)
clientSocket.connect(("127.0.0.1", port))
clientSocket.send(input("python:").encode())
recvData = clientSocket.recv(1024)
print("C:", end="")
print("%s"%recvData)
clientSocket.close()
浅尝辄止, noqa
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