Rotating Proxies

													
// demo.cpp : Define the entry point of a console application
//

#include "stdafx.h"
#include "curl/curl.h"
#pragma comment(lib, "libcurl.lib")

//cURL callback function
static size_t write_buff_data(char *buffer, size_t size, size_t nitems, void *outstream)

/*
Use an HTTP proxy
*/
int GetUrlHTTP(char *url, char *buff)
{
	CURL *curl;
	CURLcode res;
	curl = curl_easy_init();
	if (curl)
	{
		curl_easy_setopt(curl, CURLOPT_PROXY,"http://proxy server:port");//Set the HTTP proxy address								
		curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, "username:password");//username and password, separated by ":"
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)buff);//Set read/write buffers
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_buff_data);//Set callback function								
		curl_easy_setopt(curl, CURLOPT_URL, url);//Set URL address
		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, 10L);//Set a long integer to control the number of seconds to transfer the bytes defined by CURLOPT_LOW_SPEED_LIMIT
		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 50L);//Set a long integer to control the number of bytes to transfer						
		curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, 2000000L);//Maximum download speed		

		res = curl_easy_perform(curl);
		curl_easy_cleanup(curl);
		if (res == CURLE_OK){
			return res;
		}else {
			printf("Error code:%d\n", res);				
			MessageBox(NULL, TEXT("Get IP error"), TEXT("Helper"), MB_ICONINFORMATION | MB_YESNO);	
		}
	}
	return res;
}
/*
Use a SOCKS5 proxy
*/
int GetUrlSocks5(char *url, char *buff)
{
	CURL *curl;
	CURLcode res;
	curl = curl_easy_init();
	if (curl)
	{
		curl_easy_setopt(curl, CURLOPT_PROXY, "socks5://proxy server:port");//Set the SOCKS5 proxy address												
		curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, "username:password");//username and password, separated by ":"														
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)buff);//Set read/write buffers
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_buff_data);//Set callback function
		curl_easy_setopt(curl, CURLOPT_URL, url);//Set URL address
		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, 10L);//Set a long integer to control the number of seconds to transfer the bytes defined by CURLOPT_LOW_SPEED_LIMIT
		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 50L);//Set a long integer to control the number of bytes to transfer
		curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, 2000000L);/*Maximum download speed*/
								
		res = curl_easy_perform(curl);
		curl_easy_cleanup(curl);
		if (res == CURLE_OK) {
			return res;
		}
		else {
			printf("Error code:%d\n", res);			
			MessageBox(NULL, TEXT("Get IP error"), TEXT("Helper"), MB_ICONINFORMATION | MB_YESNO);					
		}
	}
	return res;
}
/*
Don't use a proxy
*/
int GetUrl(char *url, char *buff)
{
	CURL *curl;
	CURLcode res;
	//The cURL library used, initialize the cURL library
	curl = curl_easy_init();
	if (curl)
	{
		curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)buff);//Set read/write buffers							
		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_buff_data);//Set callback function
		curl_easy_setopt(curl, CURLOPT_URL, url);//Set URL address					
		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, 10L);//Set a long integer to control the number of seconds to transfer the bytes defined by CURLOPT_LOW_SPEED_LIMIT							
		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 50L);//Set a long integer to control the number of bytes to transfer
		curl_easy_setopt(curl, CURLOPT_MAX_RECV_SPEED_LARGE, 2000000L);/*Maximum download speed*/								
		res = curl_easy_perform(curl);
		curl_easy_cleanup(curl);
		if (res == CURLE_OK)
		{
			return res;
		}
		else {
			printf("Error code:%d\n", res);				
			MessageBox(NULL, TEXT("Get IP error"), TEXT("Helper"), MB_ICONINFORMATION | MB_YESNO);						
		}
	}
	return res;
}
int main()
{
	char *buff=(char*)malloc(1024*1024);
	memset(buff, 0, 1024 * 1024);
	//Not use an HTTP proxy
	GetUrl("http://myip.top", buff);
	printf("Not use proxy：%s\n", buff);
	//Use an HTTP proxy
	memset(buff, 0, 1024 * 1024);
	GetUrlHTTP("http://ipinfo.io", buff);
	printf("HTTP result：%s\n", buff);
		
	//Use a SOCKS5 proxy
	memset(buff, 0,1024 * 1024);
	GetUrlSocks5("http://ipinfo.io", buff);
	printf("SOCKS5 result：%s\n", buff);
	free(buff);
	Sleep(10 * 1000);//Wait 10 seconds and exit
			
	
	return 0;
}