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tcplongconnection.c
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tcplongconnection.c
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#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <task.h>
#include <stdlib.h>
#include <sys/socket.h>
enum
{
STACK = 32768
};
void proxytask(void*);
void rwtask(void*);
void
taskmain(int argc, char **argv)
{
int cfd, fd;
int rport;
char remote[16];
if(argc != 2){
fprintf(stderr, "usage: tcplongconnection localport \n");
taskexitall(1);
}
if((fd = netannounce(TCP, 0, atoi(argv[1]))) < 0){
fprintf(stderr, "cannot announce on tcp port %d: %s\n", atoi(argv[1]), strerror(errno));
taskexitall(1);
}
fdnoblock(fd);
while((cfd = netaccept(&fd, remote, &rport)) >= 0){
fprintf(stderr, "connection from %s:%d\n", remote, rport);
taskcreate(proxytask, (void*)cfd, STACK);
}
}
void
proxytask(void *v)
{
int fd ;
int n = 0 ;
char buf[1024];
fd = (int)v;
while((n = fdread(&fd, buf, sizeof buf)) > 0) {
fdwrite(&fd, buf, n);
}
close(fd);
}