[lwip-devel] [bug #35574] Lockup in httpd (the older non-SSI/CGI httpd)

[Bill Auerbach]

Follow-up Comment #2, bug #35574 (project lwip):

http_send_data_nonssi is structured the same way as it is in mine which I
guess a 1.3.2 version of httpd for httpserver_raw.

Looks like tcp_write can be called (whatever the circumstance) with len == 0
after the if/else.  For me hs->len was 0 and hs->file was NULL.

Why not just return from tcp_write if len == 0.  However it happens that it
might get called with len == 0, there is nothing to do (and technically there
really is no error).

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