From 923912705998160b8cf2aa1b4c144d4f5d3e65fc Mon Sep 17 00:00:00 2001
From: cashmere <cashmere@autistici.org>
Date: Thu, 25 Jun 2026 16:42:56 +0200
Subject: src/main.c: extract process message into seperate fn for readibility

---
 src/main.c | 55 ++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 32 insertions(+), 23 deletions(-)

(limited to 'src')

diff --git a/src/main.c b/src/main.c
index fc2815a..99bda09 100644
--- a/src/main.c
+++ b/src/main.c
@@ -37,6 +37,35 @@ int handle_new_connection(int sfd, struct pollfd *fds, nfds_t *nfds) {
   return 0;
 }
 
+int process_message(struct pollfd *fds, nfds_t *nfds) {
+  for (nfds_t i = 1; i < *nfds; i++) {
+    /* if client has something to say */
+    if (fds[i].revents & POLLIN) {
+      char buffer[1024]; /* create a new empty buffer */
+      ssize_t message =
+          read(fds[i].fd, buffer,
+               sizeof(buffer)); /* read the message which the client sent */
+      /* if message of the client returns an error */
+      if (message <= 0) {
+        /* close the connection if client disappeared or disconnected */
+        close(fds[i].fd);
+        fds[i] = fds[*nfds - 1]; /* move back last slot */
+        (*nfds)--;               /* size down the current array */
+        i--;
+        return -1;
+      } else {
+        /* send every message bytes to the other clients */
+        for (nfds_t j = 1; j < *nfds; j++) {
+          if (j != i) {
+            write(fds[j].fd, buffer, message);
+          }
+        }
+      }
+    }
+  }
+  return 0;
+}
+
 int main() {
   struct sockaddr_in addr;
   addr.sin_family = AF_INET;         /* IPv4 */
@@ -66,29 +95,9 @@ int main() {
         continue;
       }
     }
-    for (nfds_t i = 1; i < nfds; i++) {
-      /* if client has something to say */
-      if (fds[i].revents & POLLIN) {
-        char buffer[1024]; /* create a new empty buffer */
-        ssize_t message =
-            read(fds[i].fd, buffer,
-                 sizeof(buffer)); /* read the message which the client sent */
-        /* if message of the client returns an error */
-        if (message <= 0) {
-          /* close the connection if client disappeared or disconnected */
-          close(fds[i].fd);
-          fds[i] = fds[nfds - 1]; /* move back last slot */
-          nfds--;                 /* size down the current array */
-          i--;
-        } else {
-          /* send every message bytes to the other clients */
-          for (nfds_t j = 1; j < nfds; j++) {
-            if (j != i) {
-              write(fds[j].fd, buffer, message);
-            }
-          }
-        }
-      }
+    if (process_message(fds, &nfds) == -1) {
+      perror("could not process message");
+      continue;
     }
   }
   return 0;
-- 
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