1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142

use super::{HttpAccount, HttpStore};
use bytes::BytesMut;
use futures::{
    future::{err, result},
    Future, Stream,
};
use interledger_packet::{ErrorCode, Fulfill, Packet, Reject, RejectBuilder};
use interledger_service::*;
use reqwest::{
    header::{HeaderMap, HeaderName, HeaderValue},
    r#async::{Chunk, Client, ClientBuilder, Response as HttpResponse},
};
use std::sync::Arc;
use std::time::Duration;

#[derive(Clone)]
pub struct HttpClientService<T> {
    client: Client,
    store: Arc<T>,
}

impl<T> HttpClientService<T>
where
    T: HttpStore,
{
    pub fn new(store: T) -> Self {
        let mut headers = HeaderMap::with_capacity(2);
        headers.insert(
            HeaderName::from_static("content-type"),
            HeaderValue::from_static("application/octet-stream"),
        );
        let client = ClientBuilder::new()
            .default_headers(headers)
            .timeout(Duration::from_secs(30))
            .build()
            .unwrap();

        HttpClientService {
            client,
            store: Arc::new(store),
        }
    }
}

impl<T, A> OutgoingService<A> for HttpClientService<T>
where
    T: HttpStore,
    A: HttpAccount,
{
    type Future = BoxedIlpFuture;

    /// Send an OutgoingRequest to a peer that implements the ILP-Over-HTTP.
    fn send_request(&mut self, request: OutgoingRequest<A>) -> Self::Future {
        if let Some(url) = request.to.get_http_url() {
            Box::new(
                self.client
                    .post(url.clone())
                    .header(
                        "authorization",
                        request.to.get_http_auth_header().unwrap_or(""),
                    )
                    .body(BytesMut::from(request.prepare).freeze())
                    .send()
                    .map_err(|err| {
                        error!("Error sending HTTP request: {:?}", err);
                        RejectBuilder {
                            code: ErrorCode::T01_PEER_UNREACHABLE,
                            message: &[],
                            triggered_by: &[],
                            data: &[],
                        }
                        .build()
                    })
                    .and_then(parse_packet_from_response),
            )
        } else {
            error!(
                "Cannot send outgoing HTTP request to account with no HTTP details: {:?}",
                request.to
            );
            Box::new(err(RejectBuilder {
                code: ErrorCode::F02_UNREACHABLE,
                message: &[],
                triggered_by: &[],
                data: &[],
            }
            .build()))
        }
    }
}

fn parse_packet_from_response(
    response: HttpResponse,
) -> impl Future<Item = Fulfill, Error = Reject> {
    result(response.error_for_status().map_err(|err| {
        let code = if let Some(status) = err.status() {
            if status.is_client_error() {
                ErrorCode::F02_UNREACHABLE
            } else {
                // TODO more specific errors for rate limiting, etc?
                ErrorCode::T01_PEER_UNREACHABLE
            }
        } else {
            ErrorCode::T00_INTERNAL_ERROR
        };
        RejectBuilder {
            code,
            message: &[],
            triggered_by: &[],
            data: &[],
        }
        .build()
    }))
    .and_then(|response: HttpResponse| {
        let decoder = response.into_body();
        decoder.concat2().map_err(|err| {
            error!("Error getting HTTP response body: {:?}", err);
            RejectBuilder {
                code: ErrorCode::T01_PEER_UNREACHABLE,
                message: &[],
                triggered_by: &[],
                data: &[],
            }
            .build()
        })
    })
    .and_then(|body: Chunk| {
        // TODO can we get the body as a BytesMut so we don't need to copy?
        let body = BytesMut::from(body.to_vec());
        match Packet::try_from(body) {
            Ok(Packet::Fulfill(fulfill)) => Ok(fulfill),
            Ok(Packet::Reject(reject)) => Err(reject),
            _ => Err(RejectBuilder {
                code: ErrorCode::T01_PEER_UNREACHABLE,
                message: &[],
                triggered_by: &[],
                data: &[],
            }
            .build()),
        }
    })
}