WriteBadRequestResponse writes bad request response to the HTTP connection.

WriteInternalServerErrorResponse writes internal server error response to the HTTP connection.

WriteResponse writes response to the HTTP connection.

DataResponse is a response with data and meta property.

FriendHandler handle /friends routes.

HealthzHandler handle /healthz routes.

MessageDataResponse is a response with message, data and meta property.

MessageResponse is a response with message and meta property.

ResponseMeta is a struct for response meta property.