sdmmd_return_t SDMMD_ServiceSend(SocketConnection, CFDataRef): Incomplete length

When i try to take backup then it show this error in SDMMD_ServiceSendMessage function.

Please see code: -(void)getMobileBackup { sdmmd_return_t result1 = kAMDInvalidArgumentError; CFDictionaryRef dict = NULL; SDMMD_AMConnectionRef conn = NULL; conn = SDMMD_AMDServiceConnectionCreate(0, NULL, dict); result1 = SDMMD_AMDeviceStartService(device, CFSTR(AMSVC_BACKUP2), NULL, &conn);

if (SDM_MD_CallSuccessful(result1))
{
    CFMutableDictionaryRef responset = NULL;

    /*
     Open connection

     recieve from device

     <CFArray>=[
     <CFStringRef>={DLMessageVersionExchange}
     <CFNumberRef>=(kCFNumberSInt64Type){300} // major version
     <CFNumberRef>=(kCFNumberSInt64Type){0} // minor version
     ]

     respond with sending

     <CFArray>=[
     <CFStringRef>={DLMessageProcessMessage}
     <CFDictionary>={
     ]
     SupportedProtocolVersions: <CFArray>=[
     <CFNumberRef>=(kCFNumberFloat64Type){2.100000}
     MessageName: <CFStringRef>={Hello}
     }
     ]

     if successful, now receive

     <CFArray>=[
     <CFStringRef>={DLMessageDeviceReady}
     ]

     it seems that for doing a restore, you need to parse the mbdb

     // for files that are not on the host system
     Received:
     <CFArray>=[
     <CFStringRef>={DLMessageDownloadFiles}
     <CFArray>=[
     <CFStringRef>={435f770a03b4ff48d7540f3d85851f845e6e14ac/Info.plist}
     ]
     <CFDictionary>={
     }
     <CFNumberRef>=(kCFNumberFloat64Type){0.000000}
     <CFNumberRef>=(kCFNumberSInt64Type){0}
     ]

     If file doesn't exist...

     Send: (length + 0x06)
     0000 0001 06

     Send: (four zeros raw)
     0000 0000

     Send Message:
     <CFArray>=[
     <CFStringRef>={DLMessageStatusResponse}
     <CFNumberRef>=(kCFNumberSInt64Type){-13}   // magic error number :P
     <CFStringRef>={Multi status}
     <CFDictionary>={
     <CFStringRef>={435f770a03b4ff48d7540f3d85851f845e6e14ac/Info.plist}: <CFDictionary>={
     <CFStringRef>={DLFileErrorString}: <CFStringRef>=Invalid object referenced in backup image // this is just an example
     <CFStringRef>={DLFileErrorCode}: <CFNumberRef>=(kCFNumberSInt64Type){-6}   // this is the error code I've seen for file not found
     }
     }
     ]
     */

    CFMutableArrayRef arrVesrions = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
    Float64 code_value1 = 2.0;
    CFNumberRef code1 = CFNumberCreate(kCFAllocatorDefault, kCFNumberFloat64Type, &code_value1);
    CFArrayAppendValue(arrVesrions, code1);

    Float64 code_value2 = 2.1;
    CFNumberRef code2 = CFNumberCreate(kCFAllocatorDefault, kCFNumberFloat64Type, &code_value2);
    CFArrayAppendValue(arrVesrions, code2);

    CFMutableDictionaryRef dictVersion = SDMMD_create_dict();
    CFDictionarySetValue(dictVersion, CFSTR("SupportedProtocolVersions"), arrVesrions);
    CFDictionarySetValue(dictVersion, CFSTR("MessageName"), CFSTR("Hello"));

    CFMutableArrayRef status_response = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
    CFArrayAppendValue(status_response, CFSTR("DLMessageProcessMessage"));
    CFArrayAppendValue(status_response, dictVersion);

    result1 = SDMMD_ServiceSendMessage(SDMMD_TranslateConnectionToSocket(conn), status_response, kCFPropertyListXMLFormat_v1_0);
    if (SDM_MD_CallSuccessful(result1))
    {
        result1 = SDMMD_ServiceReceiveMessage(SDMMD_TranslateConnectionToSocket(conn), (CFPropertyListRef *)&responset);

    }
    if (SDM_MD_CallSuccessful(result1))
    {
        NSMutableDictionary *dictResponse = (__bridge NSMutableDictionary *)(responset);
        NSLog(@"dictResponse=%@",dictResponse);

        CFMutableArrayRef arrDeviceReady = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
        CFArrayAppendValue(arrDeviceReady, CFSTR("DLMessageVersionExchange"));
        CFArrayAppendValue(arrDeviceReady, CFSTR("DLVersionsOk"));
        uint32_t code_value3 = 300;
        CFNumberRef code3 = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &code_value3);
        CFArrayAppendValue(arrDeviceReady, code3);

        **result1 = SDMMD_ServiceSendMessage(SDMMD_TranslateConnectionToSocket(conn), arrDeviceReady, kCFPropertyListXMLFormat_v1_0);**

        if (SDM_MD_CallSuccessful(result1))
        {
            result1 = SDMMD_ServiceReceiveMessage(SDMMD_TranslateConnectionToSocket(conn), (CFPropertyListRef *)&responset);

        }
        if (SDM_MD_CallSuccessful(result1))
        {
            NSMutableDictionary *dictResponse = (__bridge NSMutableDictionary *)(responset);
            NSLog(@"dictResponse=%@",dictResponse);

        }
    }
}

}

I am facing problem in this line: " result1 = SDMMD_ServiceSendMessage(SDMMD_TranslateConnectionToSocket(conn), arrDeviceReady, kCFPropertyListXMLFormat_v1_0); " Please suggest any solution.

samdmarshall / SDMMobileDevice

sdmmd_return_t SDMMD_ServiceSend(SocketConnection, CFDataRef): Incomplete length #102