discuz3.4设置https之后，UC通信失败解决方法
在UC目录找到文件：/public_html/uc_server/model/misc.php加中间红色的那一段，从 if(substr($url,0,5)=='https' 到 return curl_exec($ch); }：
function dfopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE , $ip = '', $timeout = 15, $block = TRUE, $encodetype= 'URLENCODE') {
$return = '';
$matches = parse_url($url);
$scheme = $matches['scheme'];
$host = $matches['host'];
$path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';
$port = !empty($matches['port']) ? $matches['port'] : 80;
if(substr($url,0,5)=='https'){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
if($post){
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
}
if($cookie){
curl_setopt($ch, CURLOPT_COOKIE, $cookie);
}
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
return curl_exec($ch);
}
if($post) {
$out = "OST $path HTTP/1.0\r\n";
$header = "Accept: */*\r\n";
$header .= "Accept-Language: zh-cn\r\n";
$boundary = $encodetype == 'URLENCODE' ? '' : ';'.substr($post, 0, trim(strpos($post, "\n")));
$header .= $encodetype == 'URLENCODE' ? "Content-Type: application/x-www-form-urlencoded\r\n" : "Content-Type: multipart/form-data$boundary\r\n";
$header .= "User-Agent: $_SERVER\r\n";
$header .= "Host: $hostport\r\n";
$header .= 'Content-Length: '.strlen($post)."\r\n";
$header .= "Connection: Close\r\n";
$header .= "Cache-Control: no-cache\r\n";
$header .= "Cookie: $cookie\r\n\r\n";
$out .= $header.$post;
编后语：经测试，即使是UC显示通讯失败，但是在前台注册的时候还是同步的，对网站运行不影响，有强迫性的人就修改一下吧。
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