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在客户端 - 服务器编程中工作时,我在客户端传递了3个字符串,它将被服务器接收,并且应该在那里打印3次。 (即我已经使用'for'循环,它将分别在客户端&中执行读取&写入操作),但是在服务器中,只有第一个字符串正在打印。为什么我无法读取服务器文件中的多个字符串?
请解释一下,
这里是我的代码
server.c
#include "head.h"
void readstr(int connfd ,char [][20]);
//void writestr(char * ,int);
int main(int c ,char *v[])
{
// socket declarations,etc
sd =socket(AF_INET ,SOCK_STREAM ,0);
// Binding socket
retbind =bind(sd ,(struct sockaddr*)&serveraddress ,sizeof(serveraddress
));
listen(sd ,4);
for(;;)
{
printf("i am waiting for client\n");
len =sizeof(cliaddr);
connfd = accept(sd ,(struct sockaddr*)&cliaddr ,&len);
readstr(connfd ,databuf);
close(connfd);
}
return 0;
}
void readstr(int connfd ,char str[3] [20])
{
int pointer=0 ,i=0, n,pos=0;
memset(str ,'\0',sizeof(str));
for(i=0;i<3;i++)
{
while((n=read(connfd ,str[i] ,20)) >>0)
{
printf("Looping while\n");
pos =pos +n;
}
str[i][pos] ='\0';
}
for(i=0;i<3;i++)
{
printf("\n%s",str[i]);
}
}
client.c
#include "head.h"
void send1(int ,char*);
int main(int c,char*v[])
{
//Socket declarations, etc..
sd = socket(AF_INET ,SOCK_STREAM ,0);
//Connect
if(connect(sd,(struct sockaddr*)&serveraddress ,sizeof(serveraddress)) <
0)
{
printf("cannot connect to server");
exit(1);
}
for(i=0;i<3;i++)
{
memset(buf ,'\0',sizeof(buf));
printf("\n Enter the string : ");
fgets(buf[i],20,stdin);
len =strlen(buf[i]);
if(buf[i][len] =='\n')
buf[i][len]='\0';
send1(sd ,(char *)buf);
}
shutdown(sd ,SHUT_WR);
}
void send1(int sd ,char *str)
{
int n ,byteswritten =0, wr;
char buf[1024];
strcpy(buf ,str);
n =strlen(buf);
while(byteswritten < n)
{
printf("\nStarting to write in client side\n");
wr = write(sd , buf+byteswritten ,(n-byteswritten));
byteswritten+=wr;
}
printf("\n string sent %s" ,buf);
}
[为什么我无法读取服务器文件中的多个字符串?](http://stackoverflow.com/questions/8574952/why-i-am-not-able-to-read-multiple -strings-in-the-server-file) – 2011-12-20 14:19:41