[Libwebsockets] output.c: lws_issue_raw handle_truncated_send instead of assert(0)

Derald Woods woods.technical at gmail.com
Fri Apr 10 18:21:34 CEST 2015

Hello Andy,

The following patch allows code, that I am working with, to survive browser
refreshes while streaming larger chunks of data (~500k). SSL is enabled on
the connections. I have not observed any side-effects or bad behavior. The
'partial send' actually completes. The application is 'best-effort'
delivery on the network. I am continuing my verifications, but this appears
to do the right thing for my use-case.

Your thoughts? Corrections? Warnings?

diff --git a/lib/output.c b/lib/output.c
index b914f28..9e07ae5 100644
--- a/lib/output.c
+++ b/lib/output.c
@@ -109,7 +109,8 @@ int lws_issue_raw(struct libwebsocket *wsi, unsigned
char *buf, size_t len)
                 wsi->truncated_send_len +
                 wsi->truncated_send_offset))) {
         lwsl_err("****** %x Sending new, pending truncated ...\n", wsi);
-        assert(0);
+        n = 0;
+        goto handle_truncated_send;

     m = lws_ext_callback_for_each_active(wsi,

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