Changed exit statements with return statements

easysock.c

@@ -26,7 +26,7 @@ int create_socket(int network, char transport) {
 }
 
 
-void create_addr(int network, char* address, int port,struct sockaddr* dest) {
+int create_addr(int network, char* address, int port,struct sockaddr* dest) {
 	if (network == 4) {
 		struct sockaddr_in listen_address;
 		
@@ -45,7 +45,7 @@ void create_addr(int network, char* address, int port,struct sockaddr* dest) {
 		return;
 
 	} else {
-		exit(202);
+		return -202;
 	}
 		
 }
@@ -53,7 +53,7 @@ void create_addr(int network, char* address, int port,struct sockaddr* dest) {
 int create_local (int network, char transport, char* address, int port,struct sockaddr* addr_struct) {
 	int socket = create_socket(network,transport);
 	if (socket < 0) {
-		exit(errno);
+		return (-1 * errno);
 	}
 	create_addr(network,address,port,addr_struct);
 	int addrlen;
@@ -62,7 +62,7 @@ int create_local (int network, char transport, char* address, int port,struct so
 	} else if (network == 6) {
 		addrlen = sizeof(struct sockaddr_in6);
 	} else {
-		exit(207);
+		return -207;
 	}
 
 	/* The value of addrlen should be the size of the 'sockaddr'. 
@@ -71,7 +71,7 @@ int create_local (int network, char transport, char* address, int port,struct so
 
 	int i = bind (socket,addr_struct,(socklen_t)addrlen);
 	if (i < 0) {
-		exit(errno);
+		return (-1 * errno);
 	}
 	return socket;
 }
@@ -104,7 +104,7 @@ int create_remote (int network,char transport,char* address,int port,struct sock
 
 	int socket = create_socket(network,transport);
 	if (socket < 0) {
-                exit(errno);
+                return (-1 * errno);
         }
 
        	int addrlen;
@@ -113,7 +113,7 @@ int create_remote (int network,char transport,char* address,int port,struct sock
 	} else if (network == 6) {
 		addrlen = sizeof(struct sockaddr_in6);
 	} else {
-		exit(207);
+		return (-1 * errno);
 	}
 
 	/* The value of addrlen should be the size of the 'sockaddr'. 
@@ -122,7 +122,7 @@ int create_remote (int network,char transport,char* address,int port,struct sock
 
         int i = connect(socket,remote_addr_struct,(socklen_t)addrlen);
 	if (i < 0) {
-		exit(errno);
+		return (-1 * errno);
 	}
         return socket;
 }
@@ -145,7 +145,7 @@ int int_to_inet(int network) {
 	} else if (network == 6) {
 		return AF_INET6;
 	} else {
-		exit(207);
+		return -207;
 	}
 }
 
@@ -155,7 +155,7 @@ int inet_to_int(int af_type) {
 	} else if (af_type == AF_INET6) {
 		return 6;
 	} else {
-		exit(207);
+		return -207;
 	}
 }
 
@@ -165,6 +165,6 @@ int char_to_socktype(char transport) {
 	} else if (transport == 'U') {
 		return SOCK_DGRAM;
 	} else {
-		exit(250);
+		return -250;
 	}
 }

easysock.h

@@ -28,10 +28,10 @@ int create_socket(int network, char transport);
 port is self-explanatory;
 and dest is a pointer to the sockaddr struct that will be filled in. 
 
-The function exits with error code 202 if the network parameter contained neither '4'
+The function returns with -202 if the network parameter contained neither '4'
 nor '6'. */
 
-void create_addr(int network, char* address, int port,struct sockaddr* dest);
+int create_addr(int network, char* address, int port,struct sockaddr* dest);
 
 
 
@@ -39,7 +39,7 @@ void create_addr(int network, char* address, int port,struct sockaddr* dest);
 _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 exits with errno.*/
+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);
 
@@ -48,7 +48,7 @@ int create_local (int network, char transport, char* address, int port,struct so
 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.
 
-It prints the error returned by 'connect' if something went wrong, and exits with errno.*/
+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);
 
@@ -63,7 +63,7 @@ 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 - exits with error code 250 if 
+(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);