<s>
Server-Sent	B-Language
Events	I-Language
(	O
SSE	O
)	O
is	O
a	O
server	B-General_Concept
push	I-General_Concept
technology	O
enabling	O
a	O
client	O
to	O
receive	O
automatic	O
updates	O
from	O
a	O
server	O
via	O
an	O
HTTP	O
connection	O
,	O
and	O
describes	O
how	O
servers	O
can	O
initiate	O
data	O
transmission	O
towards	O
clients	O
once	O
an	O
initial	O
client	O
connection	O
has	O
been	O
established	O
.	O
</s>
<s>
The	O
EventSource	O
API	O
is	O
standardized	O
as	O
part	O
of	O
HTML5	B-Application
by	O
the	O
WHATWG	B-Language
.	O
</s>
<s>
The	O
media	B-Application
type	I-Application
for	O
SSE	O
is	O
text/event	O
-stream	O
.	O
</s>
<s>
The	O
SSE	O
mechanism	O
was	O
first	O
specified	O
by	O
Ian	O
Hickson	O
as	O
part	O
of	O
the	O
"	O
WHATWG	B-Language
Web	O
Applications	O
1.0	O
"	O
proposal	O
starting	O
in	O
2004	O
.	O
</s>
<s>
In	O
September	O
2006	O
,	O
the	O
Opera	B-Application
web	I-Application
browser	I-Application
implemented	O
the	O
experimental	O
technology	O
in	O
a	O
feature	O
called	O
"	O
Server-Sent	B-Language
Events	I-Language
"	O
.	O
</s>
<s>
All	O
modern	O
browsers	O
support	O
server-sent	B-Language
events	I-Language
:	O
Firefox	B-Application
6+	O
,	O
Google	B-Application
Chrome	I-Application
6+	O
,	O
Opera	B-Application
11.5	O
+	O
,	O
Safari	B-Application
5+	O
,	O
Microsoft	B-Application
Edge	I-Application
79+	O
.	O
</s>
<s>
-	O
Node.js/Browserify	O
implementation	O
(	O
client	O
and	O
server	O
)	O
.	O
</s>
<s>
-	O
A	O
library	O
for	O
Node.js	B-Language
and	O
web	O
browser	O
to	O
develop	O
security	O
and	O
high-performance	O
SSE	O
.	O
</s>
<s>
-	O
Server-Sent	B-Language
Events	I-Language
for	O
Django	O
.	O
</s>
<s>
-	O
Server	B-Language
sent	I-Language
events	I-Language
for	O
starlette	O
and	O
FastApi	O
.	O
</s>
<s>
-	O
Server-sent	B-Language
events	I-Language
support	O
for	O
aiohttp	O
.	O
</s>
