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linuxÏÂtcp·þÎñÆ÷Ô´ÂëʾÀý

#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/in.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
struct _NSS_HEADER
{
unsigned short ProtocolVersion; /* ЭÒé°æ±¾ÐÅÏ¢ */
unsigned short MsgType; /* ÏûÏ¢ÀàÐÍ */
unsigned short TransactionNo; /* ´«Êä±àºÅ */
unsigned short PacketLength; /* Êý¾Ý°ü³¤¶È,°üÀ¨Header */
}NSS_HEADER;
void str_echo(int sockfd)
{
ssize_t readLen;
ssize_t writeLen;
char buf[8];
while ( true )
{
readLen = read(sockfd, buf, 8);
if (readLen < 0 && errno == EINTR)
{
continue;
}
else if ( readLen <= 0 )
{
perror( "read:");
return ;
}
printf( "recv data successed. data len: %d\n", readLen );
int nWriteLen = 0;
while ( true )
{
writeLen == write(sockfd, &buf[nWriteLen], readLen-nWriteLen);
if (writeLen < 0 && errno == EINTR)
{
continue;
}
else if ( writeLen < 0 )
{
perror ( "write:" );
return;
}
nWriteLen += writeLen;
// ÒÑдÍֱ꣬½Ó·µ»Ø
if (nWriteLen >= readLen )
{
break;
}
}
printf( "send data successed. data len: %d\n", readLen );
}
}
int main(int argc, char **argv)
{
printf( "server ip: %s\n", argv[1] );
printf( "server port: %s\n", argv[2] );
printf( "\nservice starting ... \n\n" );
int listenfd, connfd;
pid_t childpid;
socklen_t clilen;
struct sockadd


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