Added two-window messaging to the client.

Client now has two seperate Ncurses windows for sending and receiving.
Added SIGINT handler which sets a global boolean to gracefully exit and free memory.
Sending and Receiving are now on their own threads.
A pointer-to-struct is now passed to the threads.
The main thread will now wait to cancel the threads upon receiving SIGINT.
slowPrintNcurses now takes a window argument.
The server now doesn't check that a client receives the message that they sent, allowing for full chat history.

src/SilverMUDClient.c

@@ -3,6 +3,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <signal.h>
+#include <stdbool.h>
 #include <pthread.h>
 #include <ncurses.h>
 #include <arpa/inet.h>
@@ -13,47 +15,73 @@
 #define PORT 5000
 #define SA struct sockaddr
 
-void * messageSender(void * sockfd)	
+// A struct for passing arguments to our threads containing a file descriptor and a window pointer:
+typedef struct threadparameters
 {
+	int socketDescriptor;
+	WINDOW * window;
+} threadparameters;
+
+// A globally availible exit boolean.
+bool shouldExit = false;
+
+void sigintHandler(int signal)
+{
+	shouldExit = true;
+}
+
+void * messageSender(void * parameters)	
+{
+	// Takes user input in a window, sanatizes it, and sends it to the server:
+	struct threadparameters *threadParameters = parameters;
 	char sendBuffer[MAX];
 	int characterindex;
-
+  
-	while (1)
+	while (!shouldExit)
 	{
 		bzero(sendBuffer, MAX);
-		wprintw(stdscr, "COMM-LINK> ");
+		wprintw(threadParameters->window, "\n\n\nCOMM-LINK> ");
-		if(wgetnstr(stdscr, sendBuffer, MAX) == ERR)
+		if(wgetnstr(threadParameters->window, sendBuffer, MAX) == ERR)
 		{
-			exit(0);
+			// Quit if there's any funny business with getting input:
+			pthread_exit(NULL);
 		}
 		userInputSanatize(sendBuffer, MAX);
 		if(sendBuffer[0] == '\n')
 		{
 			continue;
 		}
-		write((long)sockfd, sendBuffer, MAX);
+		write(threadParameters->socketDescriptor, sendBuffer, MAX);		
         }
+	pthread_exit(NULL);
 }
 
 
-void * messageReceiver(void * sockfd)
+void * messageReceiver(void * parameters)
 {
+	// Takes messages from the server and prints them to the chat log window:
+	struct threadparameters *threadParameters = parameters;
 	char receiveBuffer[MAX];
-	while (1)
+	while (!shouldExit) 
 	{
-		read((long)sockfd, receiveBuffer, MAX);
+		read(threadParameters->socketDescriptor, receiveBuffer, MAX);
-		slowPrintNcurses("\nUSER-MESSAGE: ", 8000);
+		slowPrintNcurses("USER-MESSAGE: ", 8000, threadParameters->window);
-		slowPrintNcurses(receiveBuffer, 8000);
+		slowPrintNcurses(receiveBuffer, 8000, threadParameters->window);
-		slowPrintNcurses("\nCOMM-LINK (CONT.)> ", 8000);
 		bzero(receiveBuffer, MAX);
 	}
+	pthread_exit(NULL);
 }
 	
 int main(int argc, char **argv)
 {
 	int sockfd, connfd;
 	struct sockaddr_in servaddr, cli;
-	pthread_t messagingThread;
+	pthread_t sendingThread;
+	pthread_t receivingThread;
+
+	// Set the SIGINT handler.
+	signal(SIGINT, sigintHandler);
+	
 	// Give me a socket, and make sure it's working:
 	sockfd = socket(AF_INET, SOCK_STREAM, 0);
 	if (sockfd == -1)
@@ -93,15 +121,48 @@ int main(int argc, char **argv)
 	
 	// Setup Ncurses:
 	initscr();
-	scrollok(stdscr, true);
+
+	// Create two pointers to structs to pass arguments to the threads:
+	threadparameters * logArea;
+	threadparameters * messageArea;
 	
-	// Run a thread to send messages, and use main to recieve.
+	logArea = malloc(sizeof(*logArea));
-	pthread_create(&messagingThread, NULL, messageSender, (void *)(long)sockfd);
+	messageArea = malloc(sizeof(*messageArea));
-	messageReceiver((void *)(long)sockfd);
+
+	// Make the windows for the structs, and pass the socket descriptor:
+	logArea->window = newwin(LINES - 5, COLS - 2, 1, 1);
+	logArea->socketDescriptor = sockfd;
+	messageArea->window = newwin(3, COLS, LINES - 3, 0);
+	messageArea->socketDescriptor = sockfd;
+
+	// Set the two windows to scroll:
+	scrollok(logArea->window, true);
+	scrollok(messageArea->window, true);
 	
-	// Close the socket.
+	// Run a thread to send messages, and use main to recieve:
+	pthread_create(&sendingThread, NULL, messageSender, messageArea);
+	pthread_create(&receivingThread, NULL, messageReceiver, logArea);
+
+	// Wait for SIGINT to change
+	while(!shouldExit)
+	{
+		sleep(250);
+	}
+
+	// Close the threads:
+	pthread_cancel(sendingThread);
+	pthread_cancel(receivingThread);
+	
+	// Close the socket:
 	close(sockfd);
 
+	// Free the structs:
+	free(logArea);
+	free(messageArea);
+	
 	// Unsetup Ncurses:
 	endwin();
+
+	// Say Goodbye:
+	slowPrint("\nThank you for choosing Silverkin Industries, valued customer!\n", 8000);
 }

src/SilverMUDServer.c

@@ -172,7 +172,7 @@ int main()
 						fflush(stdout);
 						for (int sendIndex = 0; sendIndex < clientsAmount; sendIndex++)
 						{
-							if(sendIndex != i && clientSockets[sendIndex] != STDIN_FILENO && clientSockets[sendIndex] != STDOUT_FILENO && clientSockets[sendIndex] != STDERR_FILENO)
+							if(clientSockets[sendIndex] != STDIN_FILENO && clientSockets[sendIndex] != STDOUT_FILENO && clientSockets[sendIndex] != STDERR_FILENO)
 							{
 								write(clientSockets[sendIndex], receiveBuffer, sizeof(receiveBuffer));
 							}

src/misc/texteffects.c

@@ -17,15 +17,16 @@ void slowPrint(char * stringToPrint, int delay)
 	}
 }
 
-void slowPrintNcurses(char * stringToPrint, int delay)
+void slowPrintNcurses(char * stringToPrint, int delay, WINDOW * window)
 {
 	int characterIndex = 0;
 	while(stringToPrint[characterIndex] != '\0')
 	{
-		addch(stringToPrint[characterIndex]);
+		waddch(window, stringToPrint[characterIndex]);
 		// Refresh the ncurses screen.
-		refresh();
+		wrefresh(window);
 		usleep(delay);
 		characterIndex++;
 	}
+	wrefresh(window);
 }

src/misc/texteffects.h

@@ -3,12 +3,13 @@
 #ifndef TEXTEFFECTS_H_
 #define TEXTEFFECTS_H_
 #include <stdio.h>
+#include <ncurses.h>
 
 // A fancy, character by character print. Similar to a serial terminal with lower baud rate.
 void slowPrint(char * stringToPrint, int delay);
 
 // The same, altered to work with Ncurses.
-void slowPrintNcurses(char * stringToPrint, int delay);
+void slowPrintNcurses(char * stringToPrint, int delay, WINDOW * window);
 
 // A string containing an ASCII art version of the Silverkin Industries logo.
 char * logostring = "                                                         ///////\n                                 //////////////////////////////////////////\n                   ///////////////////////////////////////////////////////////\n        //////////                                  ////////////////////////////\n   ###   #  #    #     # #####  ###   # #  #  #   #            /////////////////\n  ###    #  #     #   #  ##     #  #  ##   #  ##  #               //////////////\n     ##	 #  #      # #   #      ###   # #  #  # # #                   /////////\n  ####   #  ###     #    #####  #  #  #  # #  #  ##                    ///////\n         #  ##   #  #####   #   #   ### ### ###  # #####  ###          ////// \n         #  # #  #  #    #  #   #  ##    #  #  # # ##    ##             ////\n       	 #  #  # #  #    #  #   #    ##  #  ###	 # #   	   ##	       	//\n         #  #  ###  #####   #####  ###   #  #  # # ####  ###           //\n";