in aws_common/src/sdk_utils/auth/service_credentials_provider.cpp [281:296]
static size_t WriteData(char * ptr, size_t /*size*/, size_t nmemb, void * userdata)
{
auto * ctx = static_cast<RequestContext *>(userdata);
size_t current = ctx->stream_.tellp();
// Returning less than nmemb to curl indicates an error
if ((current + nmemb) > MAX_IOT_CREDENTIAL_BYTES) {
AWS_LOG_ERROR(AWS_LOG_TAG,
"IoT response was too large, current:%d bytes, read:%d bytes, max:%d bytes",
current, nmemb, MAX_IOT_CREDENTIAL_BYTES);
return 0;
}
ctx->stream_.write(ptr, nmemb);
return nmemb;
}