Crate canhttp 

Library to make HTTPs outcalls from a canister on the Internet Computer, leveraging the modularity of the tower framework.

Re-exports

pub use convert::ConvertServiceBuilder;

Modules

convert

Fallible conversion from one type to another that can be used as a tower middleware.

cycles

Middleware to handle cycles accounting.

http

Middleware to add an HTTP translation layer.

observability

Middleware that adds high level observability (e.g., logging, metrics) to a Service.

retry

Middleware for retrying “failed” requests.

Structs

CanisterReadyLayer

A tower::Layer that wraps services in a CanisterReadyService middleware.

CanisterReadyService

A tower::Service that checks that the canister is running before calling the inner service.

Client

Thin wrapper around ic_cdk::management_canister::http_request that implements the tower::Service trait. Its functionality can be extended by composing so-called tower middlewares.

Enums

CanisterReadyError

Error returned by the CanisterReadyService.

IcError

Error returned by the Internet Computer when making an HTTPs outcall.

Traits

HttpsOutcallError

Characterize errors that are specific to HTTPs outcalls.

IsReplicatedRequestExtension

Add support for selecting replicated or non-replicated HTTP outcalls.

MaxResponseBytesRequestExtension

Add support for max response bytes.

TransformContextRequestExtension

Add support for transform context to specify how the response will be canonicalized by the replica to maximize chances of consensus.