【实验八】Linux 的socket编程

目录

一、问题

二、代码

1、serMain.cpp

2、server.h

3、server.cpp

4、cliMain.cpp 

5、client.h

6、client.cpp

7、tcp.mk

三、运行结果 

一、问题

客户端命令行传入一个数，判断奇偶，然后结果返回客户端。

函数参考博客

二、代码

1、serMain.cpp

#include
#include"server.h"
int main(int argc,char* argv[]){
	server(atoi(argv[1]));
	return 0;
}

2、server.h

void server(int port);

3、server.cpp

#include
#include
#include
#include
#include
#include
#include
#include"server.h"

using SAI=struct sockaddr_in;
using SA=struct sockaddr;

const int LEN=4096;

void handle_mes(const int confd){
	while(true){
		char buf[LEN]={''};
		int len=read(confd,buf,LEN);
		if(len<=0){
			std::cerr<<"client closen";
			break;
		}
		buf[len]='';
		if(atoi(buf)%2 == 0){
			strcpy(buf,"偶数");
		
		}else{
			strcpy(buf,"奇数");
			
	         }
		
		write(confd,buf,strlen(buf));
	}
}

void process(const int listenfd){
	while(true){
		int confd=accept(listenfd,NULL,NULL);
		if(confd>0){
			handle_mes(confd);
		}
	}
}

void server(int port){
	int listenfd;
	do{
		int listenfd=socket(PF_INET,SOCK_STREAM,0);
		if(listenfd == -1){
			std::cerr<<"socket wrongn";
			break;
		}
		SAI saddr;
		saddr.sin_family=AF_INET;
		saddr.sin_addr.s_addr=htonl(INADDR_ANY);
		saddr.sin_port=htons(port);
		if(bind(listenfd,(SA*)&saddr,sizeof(saddr)) == -1){
			std::cerr<<"bind wrongn";
			break;
		}
		if(listen(listenfd,5) == -1){
			std::cerr<<"listen wrongn";
			break;
		}
		process(listenfd);
	  }while(0);
         close(listenfd);
}

4、cliMain.cpp 

#include
#include"client.h"
int main(int argc,char *argv[]){
 	client(argv[1],atoi(argv[2]),argv[3]);
	return 0;

}

5、client.h

void client(const char* ip,const int port,char* num);

6、client.cpp

#include
#include
#include
#include
#include
#include
#include"client.h"

using SAI=struct sockaddr_in;
using SA=struct sockaddr;

const int LEN=4096;

void process(const int confd,char* num){
	while(true){
		char buf[LEN]={''};
		write(confd,num,strlen(num));
		int len=read(confd,buf,LEN);
		buf[len]='';
		std::cout< 
7、tcp.mk 
GCC=g++
CFLAG=-c
OFLAG=-o
SEXE=serMain
SOBJ=serMain.o server.o
CEXE=cliMain
COBJ=cliMain.o client.o
all:${SEXE} ${CEXE}
${SEXE}:${SOBJ}
        ${GCC} ${OFLAG} $@ $^
${CEXE}:${COBJ}
        ${GCC} ${OFLAG} $@ $^
%.o:%.cpp
        ${GCC} ${CFLAG} $^
clean:   
        rm *.o
                
 
三、运行结果