NSURLConnection:gzip编码的SOAP响应被破坏

Question

我在编写与具有SOAP WS接口的应用程序通信的IPhone/IOS Obj-C SOAP客户端时遇到了麻烦.该应用程序使用NuSOAP php webserver并使用gzip/deflate对任何超过一定大小的有效负载进行编码,无论客户端启用哪个.

我知道NSURLConnection透明地解压缩任何gzip编码的响应并呈现解压缩的响应,但在这种情况下收到的原始响应似乎是损坏的.我将SOAP有效负载转储到一个文件中并使用gunzip解压缩,它抱怨"意外的文件结束".我确实检查了网络服务器并将其发送到文件的gzip响应转储,使用gunzip解压缩时没有任何错误.似乎响应在收到时已损坏.

我尝试使用NSURLConnection和ASIHTTPRequest.使用NSURLConnection,响应数据长度和响应的HTTP头中提到的长度之间每次恰好有15个字节的差异.使用ASIHTTPRequest,接收的字节数和HTTP头中的响应长度匹配,但是响应仍然是损坏的,并且不会响应gzip解压缩.

    - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    NSLog(@"Headers :%@",[(NSHTTPURLResponse*)response allHeaderFields]);
        [self.receivedData setLength:0];
    self.receivedData = [[NSMutableData dataWithCapacity:1024*1024] retain];
   }

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)value {
    NSString *dataRec = [[NSString alloc] initWithData:value encoding:NSUTF8StringEncoding];
    NSLog(@"didReceiveData :%@",dataRec);
    [self.receivedData appendData:value];
}

2010-10-04 13:37:15.310 SugarSoap [848:207]标题:{"Cache-Control"="no-store,no-cache,must-revalidate,post-check = 0,pre-check = 0" ; 连接="保持活力"; "Content-Encoding"= gzip; "内容长度"= 1683; "Content-Type"="text/xml; charset = UTF-8"; Date ="Mon,04 Oct 2010 08:07:14 GMT"; Expires ="Thu,1981年11月19日08:52:00 GMT"; "Keep-Alive"="timeout = 15,max = 100"; Pragma ="no-cache"; Server ="Apache/2.0.59(Unix)mod_ssl/2.0.59 OpenSSL/0.9.8g DAV/2 PHP/5.2.5"; "Set-Cookie"="PHPSESSID = udsgtttvts90ijuhsvuqop6ja6; path = /"; Vary ="Accept-Encoding"; "X-Powered-By"="PHP/5.2.

didReceiveData:(null)2010-10-04 13:37:15.311 SugarSoap [848:207] connectionFinsihed!长度:1668

-(void)requestFinished:(ASIHTTPRequest *)request {
    if([request isResponseCompressed]){
        NSLog(@"Response Compressed.");
    }
    NSData *compressedResponse = [request rawResponseData];
    NSData *responseData = [request responseData];
    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSASCIIStringEncoding];
    NSLog(@"Length before decompression:%d Length after decompression:%d", compressedResponse length],[responseData length]);
    NSLog(@"Response :%@",responseString);
}

2010-10-04 14:11:20.687 Hello_SOAP [1033:207]响应压缩.

2010-10-04 14:11:20.687 Hello_SOAP [1033:207]减压前的长度:2165减压后的长度:0

2010-10-04 14:11:20.687 Hello_SOAP [1033:207]回复:

Answer 1

我曾经遇到过一个问题，一个稍微损坏的文件在我的 Mac 上可以毫无问题地解压缩，但在 iPhone 上却不会。我猜 iPhone 上的 zlib 对错误的容忍度较低。