c语言socket 传输大数据量

来源：互联网发布：mac和手机日历同步编辑：程序博客网时间：2024/06/06 08:26

[php] view plaincopy
int server_sock,client_sock;  
    socklen_t server_len,client_len;  
    struct sockaddr_in server_address;  
    struct sockaddr_in client_address;  
    int result;  
    fd_set readfds,testfds;  
    server_sock=socket(AF_INET,SOCK_STREAM,0);  
    server_address.sin_family=AF_INET;  
    server_address.sin_port=htons(3334);  
    server_address.sin_addr.s_addr=htonl(INADDR_ANY);  
    server_len=sizeof(server_address);  
    bind(server_sock,(struct sockaddr *)&server_address,server_len);  
    listen(server_sock,5);  
      
    FD_ZERO(&readfds);  
    FD_SET(server_sock,&readfds);  
    while(1){  
        char ch[20];  
        char buffer[256];  
        char block[1024];  
        int fd,n;  
        FILE *fp;  
        int nread;  
        time_t t;  
        testfds=readfds;  
        printf("server waiting/n");  
        result=select(FD_SETSIZE,&testfds,(fd_set *)0,(fd_set *)0,(struct timeval *)0);  
        if(result<1){  
            perror("server5");  
            exit(1);  
        }  
        for(fd=0;fd<FD_SETSIZE;fd++){  
            if(FD_ISSET(fd,&testfds)){  
                if(fd==server_sock){  
                  client_len = sizeof(struct sockaddr_in);  
                  client_sock=accept(server_sock,(struct sockaddr *)&client_address,&client_len);  
                  FD_SET(client_sock,&readfds);  
                  printf("adding client on fd %d /n",client_sock);  
                }else{  
                    ioctl(fd,FIONREAD,&nread);  
                    if(nread==0){  
                        close(fd);  
                        FD_CLR(fd,&readfds);  
                        printf("removing client on fd %d/n",fd);  
                    }else{  
                        n = read(fd,buffer,255);  
                        if (n < 0)  
                             printf("ERROR reading from socket");  
                        printf("%s",buffer);  
            //读取一个文件发送到客户端  
                        fp=fopen("/home/wyt/test","r");  
                        while(!feof(fp)){  
                //分段发送  
                            fgets(block,sizeof(block),fp);  
                            send(fd,block,sizeof(block),0);  
                            //write(fd,block,sizeof(block));  
                        }  
                        fclose(fp);  
                    }  
                }  
            }  
        }  
    }  

以上是服务器端的程序

[cpp] view plaincopy
//client1.cpp程序  
#include <stdlib.h>  
#include <stdio.h>  
#include <stdlib.h>  
#include <errno.h>  
#include <string.h>  
#include <sys/types.h>  
#include <netinet/in.h>  
#include <sys/socket.h>  
#include <sys/wait.h>  
#include <unistd.h>  
#include <arpa/inet.h>  
#include <time.h>  
#include <iostream>  
using namespace std;  
int main(int argc, char** argv) {  
    struct sockaddr_in address;  
    int client_sock;  
    char ch[20]="my name is client/0";  
    int len,result;  
    char in[5];  
    int n,tmp;  
    char buffer[1024];  
    client_sock=socket(AF_INET,SOCK_STREAM,0);  
    address.sin_addr.s_addr=inet_addr("127.0.0.1");    
    address.sin_family=AF_INET;  
    address.sin_port=htons(3334);  
    len=sizeof(address);  
    result=connect(client_sock,(struct sockaddr *)&address,len);  
    if(result==-1){  
        printf("error!");  
        exit(-1);  
    }  
    n=write(client_sock,"abc/n",6);  
    if(n<0){  
        printf("error write/n");  
    }  
    bzero(buffer,1024);  
   //进行循环读取数据     
    while(tmp=recv(client_sock,buffer,sizeof(buffer),0)){  
        if(tmp==-1) break;  
        printf("%s",buffer);  
    }  
    exit(0);  
    return (EXIT_SUCCESS);  
}  

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c语言socket 传输 大数据量

c语言socket 传输大数据量