#C++实现TCP连接
@(C++代码)[网络编程, tcp, C++, C++实现]
server.cpp:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <arpa/inet.h>
#define PORT 8888
void process_conn_client(int s)
{
ssize_t size = 0;
char buffer[1024];
while(1)
{
size = read(0, buffer, 1024);
if(size > 0)
{
write(s, buffer, size);
size = read(s, buffer, 1024);
write(1, buffer, size);
}
}
}
int main(int argc,char *argv[])
{
int s;
struct sockaddr_in server_addr;
s = socket(AF_INET, SOCK_STREAM, 0);
if(s < 0)
{
printf("socket error\n");
return -1;
}
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(PORT);
inet_pton(AF_INET, argv[1], &server_addr.sin_addr);
connect(s, (struct sockaddr*)&server_addr, sizeof(struct sockaddr));
process_conn_client(s);
close(s);
return 0;
}
client:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#define PORT 8888
#define BACKLOG 2
void process_conn_server(int s)
{
ssize_t size = 0;
char buffer[1024];
while(1)
{
size = read(s, buffer,1024);
if(size == 0) return;
sprintf(buffer, "%d bytes altogether\n",size);
write(s, buffer, strlen(buffer)+1);
}
}
int main()
{
int ss,sc; //socket server,socket client
struct sockaddr_in server_addr;
struct sockaddr_in client_addr;
int err;
pid_t pid;
//create AF_INET socket
ss = socket(AF_INET, SOCK_STREAM, 0);
if(ss<0)
{
printf("socket error\n");
return -1;
}
//set server address
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(PORT);
err = bind(ss, (struct sockaddr*)&server_addr , sizeof(server_addr) );
if(err < 0)
{
printf("bind error\n");
return -1;
}
err = listen(ss,BACKLOG);
if(err < 0)
{
printf("listen error\n");
return -1;
}
while(1)
{
socklen_t addrlen = sizeof(struct sockaddr);
sc = accept(ss, (struct sockaddr*)&client_addr, &addrlen);
if(sc < 0)
{
continue;
}
pid = fork();
if(pid == 0)
{
close(ss);
process_conn_server(sc);
}
else
{
close(sc);
}
}
}
makefile:
all:client server
client:tcp_client.o
gcc -o client tcp_client.o
server:tcp_server.o
gcc -o server tcp_server.o
clean:
rm -f client server *.o
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