小编Dam*_*ian的帖子

我有一个nodejs名为的脚本script.js.

var util = require('util'); 
var net = require("net"); 

process.on("uncaughtException", function(e) {
console.log(e);
});

var proxyPort = "40000"; 
var serviceHost = "1.2.3.4"; 
var servicePort = "50000"; 

net.createServer(function (proxySocket) {
    var connected = false;
    var buffers = new Array();
    var serviceSocket = new net.Socket();
    serviceSocket.connect(parseInt(servicePort), serviceHost);
    serviceSocket.pipe(proxySocket).pipe(serviceSocket);
    proxySocket.on("error", function (e) {
        serviceSocket.end();
    });
    serviceSocket.on("error", function (e) {
        console.log("Could not connect to service at host "
            + serviceHost + ', port ' + servicePort);
        proxySocket.end();
    });
    proxySocket.on("close", function(had_error) …

我试着编写一个删除多余空格的脚本,但我没有设法完成它.

基本上我想转变abc sssd g g sdg gg gf成abc sssd g g sdg gg gf.

在PHP或C#等语言中,它很容易,但在C++中却没有,我知道.这是我的代码:

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <cstring>
#include <unistd.h>
#include <string.h>

char* trim3(char* s) {
    int l = strlen(s);

    while(isspace(s[l - 1])) --l;
    while(* s && isspace(* s)) ++s, --l;

    return strndup(s, l);
}

char *str_replace(char * t1, char * t2, char * t6)
{
    char*t4;
    char*t5=(char *)malloc(10);
    memset(t5, 0, 10);
    while(strstr(t6,t1))
    {
        t4=strstr(t6,t1);
        strncpy(t5+strlen(t5),t6,t4-t6);
        strcat(t5,t2);
        t4+=strlen(t1);
        t6=t4;
    }

    return …

我写了一个程序的问题C++.我想在空闲端口上打开SOCKS5代理,然后检查是否正常(请检查curl),然后释放I/O阻塞.这是代码:

C++

main()
{
    char* s_sockshost = "127.0.0.1";
    socks_port = find_empty_port();

    if(fork())
    {
        // child process continues and opens a socks
        open_proxy();
    }
    else
    {
        // parrent process just checks something then dies      
        for(int i = 0; i < 20; i++)
        {
            proxytest = curlsockstest(s_sockshost,socks_port);

            if(proxytest)
            {
                break;
            }

            sleep(1);
        }

        if(proxytest)
        {
            if(hitdebug >= 3) printf("check_result : is opened on %s",socks_port);

            exit(0); // kill just this process
        }
        else
        {
            if(hitdebug >= 3) printf("check_result : is bad\n"); …

我已经写了一个程序C++,我需要检查TCP端口是否真的为空.

这是功能:

int checkport(char* host, char* port, int timeout)
{
    int sock;
    struct sockaddr_in sin;
    int result = 0;

    sock = socket(AF_INET, SOCK_STREAM, 0);

    sin.sin_family = AF_INET;
    sin.sin_port = htons(atoi(port));
    sin.sin_addr.s_addr = inet_addr(host);
    fd_set fdset;
    struct timeval tv;
    fcntl(sock, F_SETFL, O_NONBLOCK);

    int connect_result = connect(sock,(struct sockaddr*)(&sin),sizeof(struct sockaddr_in));
    FD_ZERO(&fdset);
    FD_SET(sock, &fdset);
    tv.tv_sec = timeout;
    tv.tv_usec = 0;

    int select_result = select(sock + 1, NULL, &fdset, NULL, &tv);

    // printf("connect = [%d] | select = [%d]\n",connect_result,select_result);

    if(select_result == 1)
    { …