mirror of
https://gitee.com/acl-dev/acl.git
synced 2024-12-14 00:40:55 +08:00
118 lines
2.3 KiB
C++
118 lines
2.3 KiB
C++
#include "stdafx.h"
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#include "util.h"
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#include "http_thread.h"
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#include "http_job.h"
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http_job::http_job(acl::thread_pool& thrpool, const char* url,
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const char* dns_ip, int dns_port)
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: thrpool_(thrpool)
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, url_(url)
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, dns_ip_(dns_ip)
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, dns_port_(dns_port)
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{
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}
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http_job::~http_job()
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{
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}
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void* http_job::run()
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{
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char addr[256];
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if (acl::http_utils::get_addr(url_, addr, sizeof(addr)) == false)
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{
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logger_error("invalid url: %s", url_.c_str());
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return NULL;
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}
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char* domain = addr, *ptr = strchr(domain, ':');
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int port;
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if (ptr == NULL)
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port = 80;
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else
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{
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*ptr++ = 0;
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port = atoi(ptr);
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}
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std::vector<acl::string> ips;
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struct timeval begin, end;
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gettimeofday(&begin, NULL);
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// 查询域名的 IP 列表
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if (dns_lookup(domain, ips) == false)
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{
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delete this;
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return NULL;
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}
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gettimeofday(&end, NULL);
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// 计算 DNS 的查询耗时
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double spent = util::stamp_sub(&end, &begin);
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std::vector<acl::thread*> threads;
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// 遍历 IP 地址列表，每一个 IP 创建一个 HTTP 客户端线程
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std::vector<acl::string>::const_iterator cit = ips.begin();
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for (; cit != ips.end(); ++cit)
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{
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// 创建并启动一个线程对象
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acl::thread* thr = new http_thread(domain, (*cit).c_str(),
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port, url_.c_str(), spent);
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thr->set_detachable(false); // 设置线程为非分离状态
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thr->start();
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threads.push_back(thr);
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}
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// 等待所有 HTTP 工作线程执行完毕
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std::vector<acl::thread*>::iterator it = threads.begin();
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for (; it != threads.end(); ++it)
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{
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acl::thread* thr = (*it);
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thr->wait();
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delete thr;
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}
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delete this; // 自销毁
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return NULL;
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}
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bool http_job::dns_lookup(const char* domain, std::vector<acl::string>& ips)
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{
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ACL_RES *res;
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ACL_DNS_DB *dns_db;
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res = acl_res_new(dns_ip_.c_str(), dns_port_);
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// 直接向 DNS 服务器发送 DNS 查询数据包
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dns_db = acl_res_lookup(res, domain);
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if (dns_db == NULL)
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{
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logger_error("acl_res_lookup failed, dns addr: %s:%d, domain: %s",
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dns_ip_.c_str(), dns_port_, domain);
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acl_res_free(res);
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return false;
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}
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ACL_ITER iter;
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acl_foreach(iter, dns_db)
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{
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ACL_HOST_INFO* info = (ACL_HOST_INFO*) iter.data;
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ips.push_back(info->ip);
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}
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acl_res_free(res);
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acl_netdb_free(dns_db);
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if (ips.empty())
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{
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logger_error("no ip for domain: %s", domain);
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return false;
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}
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return true;
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}
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