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Fixes failing https connections to HelloServerBearSSL when using the (#8206)

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MMU option with 48K IRAM shared. This happended after changes that
increased IRAM code size that caused  free IRAM for Heap to fall
below ~16K, then "new" would OOM out in WiFiClientSecureBearSSL.

Added private function to try IRAM first then switch to DRAM on fail
to WiFiClientSecureBearSSL for iobuff allocations.
This commit is contained in:
M Hightower
2021-07-11 13:22:34 -07:00
committed by GitHub
parent 95c6fbb054
commit 40876dc6ba
2 changed files with 32 additions and 31 deletions
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5
libraries/ESP8266WiFi/src/WiFiClientSecureBearSSL.h
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@@ -189,6 +189,7 @@ class WiFiClientSecureCtx : public WiFiClient {
size_t _recvapp_len;
bool _clientConnected(); // Is the underlying socket alive?
std::shared_ptr<unsigned char> _alloc_iobuf(size_t sz);
void _freeSSL();
int _run_until(unsigned target, bool blocking = true);
size_t _write(const uint8_t *buf, size_t size, bool pmem);
@@ -309,8 +310,8 @@ class WiFiClientSecure : public WiFiClient {
// Limit the TLS versions BearSSL will connect with. Default is
// BR_TLS10...BR_TLS12. Allowed values are: BR_TLS10, BR_TLS11, BR_TLS12
bool setSSLVersion(uint32_t min = BR_TLS10, uint32_t max = BR_TLS12) { return _ctx->setSSLVersion(min, max); };
bool setSSLVersion(uint32_t min = BR_TLS10, uint32_t max = BR_TLS12) { return _ctx->setSSLVersion(min, max); };
// Check for Maximum Fragment Length support for given len before connection (possibly insecure)
static bool probeMaxFragmentLength(IPAddress ip, uint16_t port, uint16_t len);
static bool probeMaxFragmentLength(const char *hostname, uint16_t port, uint16_t len);