FTP Attempt Persistent Connection stream property key for set and copy operations. Set this property to kCFBooleanTrue to enable the reuse of existing server connections; set this property to kCFBooleanFalse to not reuse existing server connections. By default, this property is set to kCFBooleanTrue.
HTTP Final Request property. A value of type CFHTTPMessage containing the final message transmitted by the stream after all modifications (including authentication, connection policy, redirects, and so on) have been made. This property cannot be set.
FTP File Transfer Offset stream property key for set and copy operations. The value of this property is a CFNumber of type kCFNumberLongLongType representing the file offset at which to start the transfer.
FTP Proxy stream property key for set and copy operations. The property is a value of type CFDictionary that holds proxy dictionary key-value pairs. The dictionary returned by SystemConfiguration can also be set as the value of this property.
The type of service for the stream. Providing the service type allows the system to properly handle certain attributes of the stream, including routing and suspension behavior. Most streams do not need to set this property. See Stream Service Types for a list of possible values.
When running CFNetwork code on Windows, this domain returns error codes associated with the underlying TCP/IP stack. You should also note that non-networking errors such as ENOMEM are delivered through the POSIX domain. See the header winsock2.h for relevant error codes.