Development
Binary Responses
To return binary responses, such as PDF downloads, from your Vapor application, your HTTP response should include the X-Vapor-Base64-Encode header:
return $response->withHeaders([
'X-Vapor-Base64-Encode' => 'True',
]);
Lambda Response Size
Lambda limits responses to 6MB. If you need to serve a larger file, consider returning a signed, temporary S3 URL that your user may use to download the file directly from S3.
Configuring OpenSSL
To use certain OpenSSL functions such as openssl_pkey_new, you must create an openssl.cnf configuration file and instruct Vapor to load it via the OPENSSL_CONF environment variable. For example, this environment variable will instruct Vapor to load an openssl.cnf file from the root of your project:
OPENSSL_CONF="/var/task/openssl.cnf"
An example openssl.cnf file is available below:
dir = certificates
[ ca ]
default_ca = CA_default
[ CA_default ]
serial = $dir/serial
database = $dir/index.txt
new_certs_dir = $dir/newcerts
certificate = $dir/cacert.pem
private_key = $dir/private/cakey.pem
default_days = 36500
default_md = sha256
preserve = no
email_in_dn = no
nameopt = default_ca
certopt = default_ca
policy = policy_match
[ policy_match ]
commonName = supplied
countryName = optional
stateOrProvinceName = optional
organizationName = optional
organizationalUnitName = optional
emailAddress = optional
[ req ]
default_bits = 2048
default_keyfile = priv.pem
default_md = sha256
distinguished_name = req_distinguished_name
req_extensions = v3_req
encyrpt_key = no
[ req_distinguished_name ]
[ v3_ca ]
basicConstraints = CA:TRUE
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer:always
[ v3_req ]
basicConstraints = CA:FALSE
subjectKeyIdentifier = hash