From 806eed60401f948bfb5466b601deae1ff4dd8d48 Mon Sep 17 00:00:00 2001
From: "Sergio R. Caprile" <scaprile@cesanta.com>
Date: Thu, 21 Jul 2022 11:46:50 -0300
Subject: [PATCH] Add mg_ws_printf()/vprintf() doc

---
 docs/README.md | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/docs/README.md b/docs/README.md
index 7b2e39db..d8ae81ab 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1498,6 +1498,32 @@ void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
 }
 ```
 
+### mg\_ws\_printf(), mg\_ws\_vprintf()
+
+```c
+size_t mg_ws_printf(struct mg_connection *, int op, const char *fmt, ...);
+size_t mg_ws_vprintf(struct mg_connection *, int op, const char *fmt, va_list);
+```
+
+Same as `mg_ws_send()`, but formats data using `printf()` semantics.
+<span class="badge bg-danger">NOTE: </span> See [mg\_ws\_send](#mg_ws_send)
+for the list of possible Websocket message types
+<span class="badge bg-danger">NOTE: </span> See [mg\_snprintf](#mg_snprintf-mg_vsnprintf)
+for the list of supported format specifiers
+
+Parameters:
+- `c` - Connection to use
+- `op` - Websocket message type
+- `fmt` - format string in `printf` semantics
+
+Return value: sent bytes count
+
+Usage example:
+
+```c
+mg_ws_printf(c, WEBSOCKET_OP_TEXT, "Hello, %s!", "world");
+```
+
 ### mg\_ws\_wrap()
 
 ```c