Added separate file for helper functions.

easysock.c

@@ -0,0 +1,83 @@
+#include "easysock.h"
+
+int create_socket(int network, char transport) {  
+	int domain;
+	int type;
+
+	if (network == 4) {
+		domain = AF_INET;
+	} else if (network == 6) {
+		domain = AF_INET6;
+	} else {
+		return -1;
+	}
+
+	if (transport == 'T') {
+		type = SOCK_STREAM;
+	} else if (transport == 'U') {
+		type = SOCK_DGRAM;
+	} else {
+		return -1;
+	}
+
+	int newSock = socket(domain,type,0);
+	return newSock;
+}
+
+
+void create_addr(int network, char* address, int port,struct sockaddr* dest) {
+	if (network == 4) {
+		struct sockaddr_in listen_address;
+		
+		listen_address.sin_family = AF_INET;
+		listen_address.sin_port = htons(port);
+		inet_pton(AF_INET,address,&listen_address.sin_addr);
+		memcpy(dest,&listen_address,sizeof(listen_address));
+		return;	
+
+	} else if (network == 6) {
+		struct sockaddr_in6 listen_ipv6;
+		listen_ipv6.sin6_family = AF_INET6;
+		listen_ipv6.sin6_port = htons(port);
+		inet_pton(AF_INET6,address,&listen_ipv6.sin6_addr);
+		memcpy(dest,&listen_ipv6,sizeof(listen_ipv6));
+		return;
+
+	} else {
+		exit(-2);
+	}
+		
+}
+
+int create_local (int network, char transport, char* address, int port,struct sockaddr* addr_struct) {
+	int socket = create_socket(network,transport);
+	if (socket == -1) {
+		exit(-1);
+	}
+	create_addr(network,address,port,addr_struct);
+	int addrlen = sizeof(*addr_struct);
+	int i = bind (socket,addr_struct,(socklen_t)addrlen);
+	if (i < 0) {
+		printf("Something went wrong: %s\n",strerror(errno));
+		exit(-3);
+	}
+	return socket;
+}
+
+int create_remote (int network,char transport,char* address,int port) {
+
+
+	int socket = create_socket(network,transport);
+	if (socket == -1) {
+                exit(-1);
+        }
+	struct sockaddr remote_addr_struct;
+        create_addr(network,address,port,&remote_addr_struct);
+        int addrlen = sizeof(remote_addr_struct);
+        int i = connect(socket,&remote_addr_struct,(socklen_t)addrlen);
+	if (i < 0) {
+		printf("Something went wrong: %s\n",strerror(errno));
+		exit(-3);
+	}
+        return socket;
+}