From f8a432311767edaffe971d22c9ce5d81227eb36c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Cipriani=20Bandarra?= <andreban@gmail.com>
Date: Sat, 31 Jan 2026 06:40:45 +0000
Subject: [PATCH] Fix SSE data field to append instead of overwrite

Per the SSE specification, multiple data: lines within a single event
should be concatenated with newline separators. Previously, each data:
line overwrote the previous value.
---
 src/network/event_source.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/network/event_source.rs b/src/network/event_source.rs
index eae9932..53eaff9 100644
--- a/src/network/event_source.rs
+++ b/src/network/event_source.rs
@@ -73,7 +73,12 @@ impl Decoder for ServerSentEventsCodec {
             self.next.event = Some(line);
         } else if line.starts_with(DATA) {
             line.drain(..DATA.len());
-            self.next.data = Some(line)
+            if let Some(ref mut existing) = self.next.data {
+                existing.push('\n');
+                existing.push_str(&line);
+            } else {
+                self.next.data = Some(line);
+            }
         } else if line.starts_with(ID) {
             line.drain(..ID.len());
             self.next.id = Some(line);