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Stream::Send fixes: doc + StreamConstPtr byte-by-byte + missing SSL availableForWrite (#7935)

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* StreamConstPtr: fix doc + reading flash space byte-by-byte
* add missing availableForWrite wrapper in wificlient-ssl
* WiFiClientSecure-ctx: add missing availableForWrite()
This commit is contained in:
david gauchard
2021-03-25 16:00:41 +01:00
committed by GitHub
parent 0a4fcdf090
commit c1118dfce3
4 changed files with 30 additions and 4 deletions
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21
libraries/ESP8266WiFi/src/WiFiClientSecureBearSSL.cpp
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@ -263,6 +263,27 @@ uint8_t WiFiClientSecureCtx::connected() {
return false;
}
int WiFiClientSecureCtx::availableForWrite () {
// code taken from ::_write()
if (!connected() || !_handshake_done) {
return 0;
}
// Get BearSSL to a state where we can send
if (_run_until(BR_SSL_SENDAPP) < 0) {
return 0;
}
if (br_ssl_engine_current_state(_eng) & BR_SSL_SENDAPP) {
size_t sendapp_len;
(void)br_ssl_engine_sendapp_buf(_eng, &sendapp_len);
// We want to call br_ssl_engine_sendapp_ack(0) but 0 is forbidden (bssl doc).
// After checking br_ssl_engine_sendapp_buf() src code,
// it seems that it is OK to not call ack when the buffer is left untouched.
//forbidden: br_ssl_engine_sendapp_ack(_eng, 0);
return (int)sendapp_len;
}
return 0;
}
size_t WiFiClientSecureCtx::_write(const uint8_t *buf, size_t size, bool pmem) {
size_t sent_bytes = 0;