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-rw-r--r--src/plugins/http/http1.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/plugins/http/http1.c b/src/plugins/http/http1.c
index 258330e87ba..265f6e7b24f 100644
--- a/src/plugins/http/http1.c
+++ b/src/plugins/http/http1.c
@@ -998,6 +998,7 @@ http1_req_state_wait_transport_method (http_conn_t *hc, http_req_t *req,
/* send at least "control data" which is necessary minimum,
* if there is some space send also portion of body */
max_enq = http_io_as_max_write (req);
+ max_enq -= sizeof (msg);
if (max_enq < req->control_data_len)
{
clib_warning ("not enough room for control data in app's rx fifo");