introducing files

client.c

@@ -0,0 +1,48 @@
+#include "moxerver_include.h"
+
+
+/* Closes client connection. */
+int client_close(struct client_t *client) {
+	/* force closing in case of error */
+	if (close(client->socket) == -1) {
+		close(client->socket);
+	}
+	client->socket = -1;
+	fprintf(stderr,"[%s]: socket closed for client %s\n", __func__, client->ip_string);
+	return 0;
+}
+
+/* Reads incoming data from client to client data buffer. */
+int client_read(struct client_t *client) {
+	
+	int len;
+	
+	/* read client data */
+	len = recv(client->socket, client->data, sizeof(client->data)-1, 0);
+	if (len == -1) {
+		fprintf(stderr, "[%s:%d] error %d: %s\n", __func__, __LINE__, errno, strerror(errno));
+		return -errno;
+	}
+	/* null-terminate received data */
+	client->data[len] = '\0';
+	
+	//TODO how does a client disconnect? For now let's wait for QUIT command...
+	if (!strncmp(client->data, "QUIT", 4)) {
+		client_close(client);
+	}
+	
+	//TODO let's print the data during development phase...
+	fprintf(stderr, "client %s says: %s", client->ip_string, client->data);
+	
+	return 0;
+}
+
+/* Sends data from a buffer to client. */
+int client_write(struct client_t *client, char *databuf, int datalen) {
+	/* send data to client */
+	if (send(client->socket, databuf, datalen, 0) == -1) {
+		fprintf(stderr, "[%s:%d] error %d: %s\n", __func__, __LINE__, errno, strerror(errno));
+		return -errno;
+	}
+	return 0;
+}