In the Creating a data server recipe from Chapter 1, BSD Socket Library, we created a server that can receive incoming data. In this recipe, we will create a client application that will send images to that server.

Also note that the data client and server applications created in Chapter 1, BSD Socket Library, can be used interchangeably with the data client and server applications created in this chapter.

We will be expanding the CFSocketClient class that we wrote in the Creating a data client recipe from Chapter 1, BSD Socket Library, to handle both the echo client and the data client.

#import <Foundation/Foundation.h>

typedef NS_ENUM(NSUInteger, CFNetworkClientErrorCode) {
  NOERRROR,
  SOCKETERROR,
  CONNECTERROR...