Configuration

Configure the Repost Kotlin client with the trailing-lambda DSL: credential precedence, timeouts, retries, and transport options.

The trailing-lambda constructor configures the client through the same validated options as Java, where a null property keeps the default:

RepostClient {
    apiKey = System.getenv("REPOST_SEND_API_KEY")
    operationTimeout = Duration.ofSeconds(30)
    maxAttempts = 4
    maxInFlightOperations = 128
}

Credential and endpoint precedence

Credential precedence, highest first: an apiKeyProvider → a fixed apiKey → the REPOST_SEND_API_KEY environment variable → the REPOST_TOKEN environment variable. With none set, the first send fails with a CONFIGURATION error and never touches the network. Base URI: an explicit baseUri → REPOST_API_URL → the default https://api.repost.sh. Plain http:// is accepted only for loopback hosts.

Defaults

The defaults match the Java SDK: 120s operation deadline, 30s per attempt, 4 attempts, 256 in-flight operations, a 64 MiB byte budget. The config object never prints your credential.

Proxy, TLS, and mTLS

Build HttpTransportOptions and set it via the httpTransportOptions property: an explicit proxy with an optional credentials provider, a borrowed SSLContext for a custom truststore or mutual TLS, and an allowlisted TLS protocol (TLS 1.2/1.3) and cipher list. HTTP redirects are disabled.