Moved header files to source directory; converted easysock to CPP

includes/easysock.hpp

@@ -0,0 +1,76 @@
+#ifndef EASYSOCK_HPP_
+#define EASYSOCK_HPP_
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+
+/* This function takes:
+a layer 3 - network layer - integer, which must be '4' for IPv4
+and 6 for IPv6; and
+a layer 4 - transport layer - character, which must be 'T' for
+TCP or 'U' for UDP. 
+
+It returns the created socket, or -1 if the socket creation failed.*/
+
+int create_socket(int network, char transport);
+
+
+/* This function fills in the sockaddr struct 'dest' based on the given information.
+'network' is an integer that contains '4' for IPv4 or '6' for IPv6;
+'address' is the address that is filled into the struct;
+port is self-explanatory;
+and dest is a pointer to the sockaddr struct that will be filled in. 
+
+The function returns with -202 if the network parameter contained neither '4'
+nor '6'. */
+
+int create_addr(int network, char* address, int port,struct sockaddr* dest);
+
+
+
+/* This function utilizes the above two functions; it creates the socket and
+_binds_ the addresses. It is used for local sockets (server sockets). Parameters are
+same as above. 
+
+It prints the error returned by 'bind' if something went wrong, and returns ( -1 * errno ).*/
+
+int create_local (int network, char transport, char* address, int port,struct sockaddr* addr_struct);
+
+
+/* This function utilizes the same functions as 'create_local' but _connects_ to the
+requested address. It is used for remote sockets (client sockets). The paramters are same
+as above. This function needs an empty 'sockaddr *' structure passed to it, which it will fill.
+
+If something goes wrong, this function returns with ( -1 * errno ). */
+
+int create_remote (int network,char transport,char* address,int port,struct sockaddr* remote_addr_struct);
+
+/* check_ip_ver - This function checks if the given string is an IPv4 address (returns 4), 
+IPv6 address (returns 6) or neither (returns -1). */
+
+int check_ip_ver(char* address);
+
+/* int_to_inet - Takes an int value (4 for IPv4, 6 for IPv6) and returns AF_INET or
+AF_INET6 respectively. */
+
+int int_to_inet(int network);
+
+/* char_to_socktype - Takes a character that represents a transport-layer protocol
+(currently only supports 'T' for TCP or 'U' for UDP - it returns -250 if 
+the given characters is neither of these) and return the appropriate SOCKTYPE value. */
+
+int char_to_socktype(char transport);
+
+/* inet_to_int - Takes an int value that corresponds to AF_INET or AF_INET6,
+and returns the appropriate int value. */
+int inet_to_int(int af_type);
+
+
+#endif