httpd: fix that http_write() returns 1 in "length" when not sending because of sndbuf/sndqueuelen
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@ -657,11 +657,12 @@ http_write(struct tcp_pcb *pcb, const void* ptr, u16_t *length, u8_t apiflags)
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if (err == ERR_OK) {
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LWIP_DEBUGF(HTTPD_DEBUG | LWIP_DBG_TRACE, ("Sent %d bytes\n", len));
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*length = len;
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} else {
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LWIP_DEBUGF(HTTPD_DEBUG | LWIP_DBG_TRACE, ("Send failed with err %d (\"%s\")\n", err, lwip_strerr(err)));
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*length = 0;
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}
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*length = len;
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return err;
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}
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@ -1012,9 +1013,6 @@ http_send_headers(struct tcp_pcb *pcb, struct http_state *hs)
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if ((err == ERR_OK) && (old_sendlen != sendlen)) {
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/* Remember that we added some more data to be transmitted. */
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data_to_send = HTTP_DATA_TO_SEND_CONTINUE;
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} else if (err != ERR_OK) {
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/* special case: http_write does not try to send 1 byte */
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sendlen = 0;
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}
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/* Fix up the header position for the next time round. */
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