聊聊JerseyEurekaHttpClient的参数

        private JerseyEurekaHttpClientFactory buildLegacy(Map<String, String> additionalHeaders, boolean systemSSL) {
            EurekaJerseyClientBuilder clientBuilder = new EurekaJerseyClientBuilder()
                    .withClientName(clientName)
                    .withUserAgent("Java-EurekaClient")
                    .withConnectionTimeout(connectionTimeout)
                    .withReadTimeout(readTimeout)
                    .withMaxConnectionsPerHost(maxConnectionsPerHost)
                    .withMaxTotalConnections(maxTotalConnections)
                    .withConnectionIdleTimeout((int) connectionIdleTimeout)
                    .withEncoderWrapper(encoderWrapper)
                    .withDecoderWrapper(decoderWrapper);

            if (systemSSL) {
                clientBuilder.withSystemSSLConfiguration();
            } else if (sslContext != null) {
                clientBuilder.withCustomSSL(sslContext);
            }

            if (hostnameVerifier != null) {
                clientBuilder.withHostnameVerifier(hostnameVerifier);
            }

            EurekaJerseyClient jerseyClient = clientBuilder.build();
            ApacheHttpClient4 discoveryApacheClient = jerseyClient.getClient();
            addFilters(discoveryApacheClient);

            return new JerseyEurekaHttpClientFactory(jerseyClient, additionalHeaders);
        }

    public EurekaJerseyClientImpl(int connectionTimeout, int readTimeout, final int connectionIdleTimeout,
                                  ClientConfig clientConfig) {
        try {
            jerseyClientConfig = clientConfig;
            apacheHttpClient = ApacheHttpClient4.create(jerseyClientConfig);
            HttpParams params = apacheHttpClient.getClientHandler().getHttpClient().getParams();

            HttpConnectionParams.setConnectionTimeout(params, connectionTimeout);
            HttpConnectionParams.setSoTimeout(params, readTimeout);

            this.apacheHttpClientConnectionCleaner = new ApacheHttpClientConnectionCleaner(apacheHttpClient, connectionIdleTimeout);
        } catch (Throwable e) {
            throw new RuntimeException("Cannot create Jersey client", e);
        }
    }

    public EurekaJerseyClient build() {
            MyDefaultApacheHttpClient4Config config = new MyDefaultApacheHttpClient4Config();
            try {
                return new EurekaJerseyClientImpl(connectionTimeout, readTimeout, connectionIdleTimeout, config);
            } catch (Throwable e) {
                throw new RuntimeException("Cannot create Jersey client ", e);
            }
        }

        class MyDefaultApacheHttpClient4Config extends DefaultApacheHttpClient4Config {
            MyDefaultApacheHttpClient4Config() {
                MonitoredConnectionManager cm;

                if (systemSSL) {
                    cm = createSystemSslCM();
                } else if (sslContext != null || hostnameVerifier != null || trustStoreFileName != null) {
                    cm = createCustomSslCM();
                } else {
                    cm = createDefaultSslCM();
                }

                if (proxyHost != null) {
                    addProxyConfiguration(cm);
                }

                DiscoveryJerseyProvider discoveryJerseyProvider = new DiscoveryJerseyProvider(encoderWrapper, decoderWrapper);
                getSingletons().add(discoveryJerseyProvider);

                // Common properties to all clients
                cm.setDefaultMaxPerRoute(maxConnectionsPerHost);
                cm.setMaxTotal(maxTotalConnections);
                getProperties().put(ApacheHttpClient4Config.PROPERTY_CONNECTION_MANAGER, cm);

                String fullUserAgentName = (userAgent == null ? clientName : userAgent) + "/v" + buildVersion();
                getProperties().put(CoreProtocolPNames.USER_AGENT, fullUserAgentName);

                // To pin a client to specific server in case redirect happens, we handle redirects directly
                // (see DiscoveryClient.makeRemoteCall methods).
                getProperties().put(PROPERTY_FOLLOW_REDIRECTS, Boolean.FALSE);
                getProperties().put(ClientPNames.HANDLE_REDIRECTS, Boolean.FALSE);
            }
            //......
        }

    public B withClientConfig(EurekaClientConfig clientConfig) {
        withClientAccept(EurekaAccept.fromString(clientConfig.getClientDataAccept()));
        withAllowRedirect(clientConfig.allowRedirects());
        withConnectionTimeout(clientConfig.getEurekaServerConnectTimeoutSeconds() * 1000);
        withReadTimeout(clientConfig.getEurekaServerReadTimeoutSeconds() * 1000);
        withMaxConnectionsPerHost(clientConfig.getEurekaServerTotalConnectionsPerHost());
        withMaxTotalConnections(clientConfig.getEurekaServerTotalConnections());
        withConnectionIdleTimeout(clientConfig.getEurekaConnectionIdleTimeoutSeconds() * 1000);
        withEncoder(clientConfig.getEncoderName());
        return withDecoder(clientConfig.getDecoderName(), clientConfig.getClientDataAccept());
    }