From dbbda02f70f4d1bb163a631bb39b0d339c4ce4a0 Mon Sep 17 00:00:00 2001
From: Klaus Wagner <nenioscio@gmail.com>
Date: Thu, 27 Feb 2014 22:12:46 +0100
Subject: [PATCH] Fix issue #338
---
mongoose.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/mongoose.c b/mongoose.c
index a417be80c..22c4d3b19 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -2262,11 +2262,13 @@ void mg_printf_data(struct mg_connection *c, const char *fmt, ...) {
struct connection *conn = MG_CONN_2_CONN(c);
struct iobuf *io = &conn->ns_conn->send_iobuf;
va_list ap;
- int len, n;
+ int len, n, iolen;
char *p;
terminate_headers(c);
+ // Remember original io->len
+ iolen = io->len;
// Write the placeholder for the chunk size
p = io->buf + io->len;
iobuf_append(io, " \r\n", 10);
@@ -2276,6 +2278,9 @@ void mg_printf_data(struct mg_connection *c, const char *fmt, ...) {
len = ns_vprintf(conn->ns_conn, fmt, ap);
va_end(ap);
+ // Recalculate pointer p because of potential realloc within iobuf_append
+ p = io->buf + iolen;
+
// Record size
n = mg_snprintf(p, 7, "%X", len);
p[n] = ' ';
--
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