无法在CFStream参数上将代理设置为kCFStreamPropertyHTTPProxy

Question

关于配置CF流以使用系统指定的代理，我有一个问题。即使这个带有手动配置字典的简单示例也不能工作，isSet字段将被设置为false。开发人员期望哪一组选项能够将字典应用到kCFStreamPropertyHTTPProxy参数？

CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(kCFAllocatorSystemDefault, CFSTR("apple.com"), 80, &readStream, &writeStream);
NSDictionary *proxySettings = @{(NSString *)kCFStreamPropertyHTTPProxyHost:@"10.0.1.2", (NSString *)kCFStreamPropertyHTTPProxyPort:@(8888)};
Boolean isSet = CFReadStreamSetProperty(readStream, kCFStreamPropertyHTTPProxy, (__bridge CFTypeRef)proxySettings);

我真的很感激任何帮助，因为我在这个问题上挣扎了几个月，却找不到任何回应。

向你问好，谢尔盖

Answer 1

这一切都是因为使用了基于套接字连接的普通流，而不是用CFReadStreamCreateForStreamedHTTPRequest创建的HTTP流(我不知道苹果为什么没有一些信息以及属性名称描述)

Answer 2

下面的代码是关于ASIHttpRequest如何处理代理设置的。如果代理类型是套接字，则应该使用kCFStreamPropertySOCKSProxy。只是你回答的补充。

if ([self proxyHost] && [self proxyPort]) {
    NSString *hostKey;
    NSString *portKey;

    if (![self proxyType]) {
        [self setProxyType:(NSString *)kCFProxyTypeHTTP];
    }

    if ([[self proxyType] isEqualToString:(NSString *)kCFProxyTypeSOCKS]) {
        hostKey = (NSString *)kCFStreamPropertySOCKSProxyHost;
        portKey = (NSString *)kCFStreamPropertySOCKSProxyPort;
    } else {
        hostKey = (NSString *)kCFStreamPropertyHTTPProxyHost;
        portKey = (NSString *)kCFStreamPropertyHTTPProxyPort;
        if ([[[[self url] scheme] lowercaseString] isEqualToString:@"https"]) {
            hostKey = (NSString *)kCFStreamPropertyHTTPSProxyHost;
            portKey = (NSString *)kCFStreamPropertyHTTPSProxyPort;
        }
    }
    NSMutableDictionary *proxyToUse = [NSMutableDictionary dictionaryWithObjectsAndKeys:[self proxyHost],hostKey,[NSNumber numberWithInt:[self proxyPort]],portKey,nil];

    if ([[self proxyType] isEqualToString:(NSString *)kCFProxyTypeSOCKS]) {
        CFReadStreamSetProperty((CFReadStreamRef)[self readStream], kCFStreamPropertySOCKSProxy, proxyToUse);
    } else {
        CFReadStreamSetProperty((CFReadStreamRef)[self readStream], kCFStreamPropertyHTTPProxy, proxyToUse);
    }