#include<stdio.h>
#include<stdlib.h>// for exit
#include<string.h>
#include<unistd.h> //for close(),read()
#include<sys/types.h>//
#include<sys/socket.h> //for socket api's
#include<netinet/in.h>//for struct sockaddr_in
#include<arpa/inet.h>// for inet_pton
#define MAX 30
int ssfd; //listenfd
int res; //connfd
int serverlen;
struct sockaddr_in serveraddr;
void main()
{
int i=0,res;
int startPortRange=0;
int stopPortRange=65536;
for(i=startPortRange; i<stopPortRange; i++)
{
ssfd=socket(AF_INET,SOCK_STREAM,0);
if(ssfd==-1)
{
printf("\nSocket Creation Failed....");
}
serveraddr.sin_family=AF_INET;
serveraddr.sin_addr.s_addr=inet_addr("127.0.0.1"); // inet_addr converts an IPV4 from dotted decimal string
//to e.g(127.0.0.1) to its 32-bit network byte ordered binary value.
serveraddr.sin_port=i;
serverlen=sizeof(serveraddr);
res = bind(ssfd,(struct sockaddr*)&serveraddr,serverlen);
if(res==-1)
{
printf("\nPort in Use : %d",i);
}
else
{
printf("\nPort not in use: %d",i);
}
close(ssfd);
}
}
我試圖讀取計算機上打開的端口(由某些程序使用)。該程序工作正常。但是它並沒有給出正確的結果。例如,我的計算機上的mysql使用的端口是3306,但是我的程序輸出它沒有被使用。請大家幫我嘗試了這一點如何使用套接字檢查打開的端口
我已添加此行serveraddr.sin_port = htons(i);但它給了我以前的輸出 – Swapnil 2013-04-10 12:18:34