chore: bump buffer limits and add epoll event update helper for client writes

- Renamed `logmsg` function to `log_event` for consistency with new logging format
- Added ISO 8601 timestamp buffer `timebuf` and replaced `tbuf` with it in log output
- Updated join/leave log messages to include client host and structured format (e.g., "user joined: <nick> (<host>) joined channel <name>")
- Moved leave log call inside the member removal loop to ensure it fires only on actual removal

.gitignore

@@ -0,0 +1,4 @@
+irc_echo_boy.py
+irc_server
+load_test
+motd.txt

irc_server.c

@@ -21,12 +21,12 @@
 // MIT License
 
 #define MAX_EVENTS 4096
-#define MAX_CHANNELS 1024
-#define MAX_NICKLEN 51
-#define MAX_USERLEN 51
-#define MAX_CHANNELLEN 51
-#define MAX_TOPICLEN 256
-#define MAX_MSG 512
+#define MAX_CHANNELS 4096
+#define MAX_NICKLEN 4096
+#define MAX_USERLEN 4096
+#define MAX_CHANNELLEN 128
+#define MAX_TOPICLEN 4096
+#define MAX_MSG 4096
 #define MOTD_FILE "motd.txt"
 #define SERVER_NAME "rirc"
 #define VERSION "1.0"
@@ -39,7 +39,7 @@ typedef struct Client {
     char nickname[MAX_NICKLEN+1];
     char user[MAX_USERLEN+1];
     char realname[MAX_USERLEN+1];
-    char host[64];
+    char host[128];
     int registered;
     int pass_ok;
     char readbuf[MAX_MSG*2];
@@ -117,6 +117,12 @@ static void del_epoll(int fd) {
     epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fd, NULL);
 }
 
+static void update_client_events(Client *c) {
+    uint32_t events = EPOLLIN;
+    if (c->writebuf_len > 0) events |= EPOLLOUT;
+    mod_epoll(c->fd, events, c);
+}
+
 static void send_reply(Client *c, const char *fmt, ...) {
     char buf[MAX_MSG];
     va_list ap;
@@ -125,6 +131,7 @@ static void send_reply(Client *c, const char *fmt, ...) {
     va_end(ap);
     int n = snprintf(c->writebuf + c->writebuf_len, sizeof(c->writebuf) - c->writebuf_len, ":%s %s\r\n", SERVER_NAME, buf);
     if (n > 0 && c->writebuf_len + n < sizeof(c->writebuf)) c->writebuf_len += n;
+    update_client_events(c);
 }
 
 static void send_raw(Client *c, const char *fmt, ...) {
@@ -135,6 +142,7 @@ static void send_raw(Client *c, const char *fmt, ...) {
     va_end(ap);
     int n = snprintf(c->writebuf + c->writebuf_len, sizeof(c->writebuf) - c->writebuf_len, "%s\r\n", buf);
     if (n > 0 && c->writebuf_len + n < sizeof(c->writebuf)) c->writebuf_len += n;
+    update_client_events(c);
 }
 
 static Channel *find_channel(const char *name) {
@@ -517,6 +525,7 @@ int main(int argc, char **argv) {
                 char *line, *saveptr;
                 line = strtok_r(c->readbuf, "\r\n", &saveptr);
                 while (line) {
+                    printf("%s\n",line);
                     handle_line(c, line);
                     line = strtok_r(NULL, "\r\n", &saveptr);
                 }