Example usage for com.google.gwt.user.client.rpc RpcRequestBuilder MODULE_BASE_HEADER

Introduction

In this page you can find the example usage for com.google.gwt.user.client.rpc RpcRequestBuilder MODULE_BASE_HEADER.

Prototype

String MODULE_BASE_HEADER

To view the source code for com.google.gwt.user.client.rpc RpcRequestBuilder MODULE_BASE_HEADER.

Click Source Link

Document

Used by #doFinish .

Usage

From source file:se.aaslin.developer.roboproxy.remote.RemoteServiceSyncProxy.java

License:Apache License

public Object doInvoke(RequestCallbackAdapter.ResponseReader responseReader, String requestData)
        throws Throwable {
    HttpURLConnection connection = null;
    InputStream is = null;/*  w  ww. j av  a2  s  .  co  m*/
    int statusCode;

    if (DUMP_PAYLOAD) {
        System.out.println("Send request to " + remoteServiceURL);
        System.out.println("Request payload: " + requestData);
    }

    // Send request
    CookieHandler oldCookieHandler = CookieHandler.getDefault();
    try {
        CookieHandler.setDefault(cookieManager);

        URL url = new URL(remoteServiceURL);

        connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.setRequestProperty(RpcRequestBuilder.STRONG_NAME_HEADER, serializationPolicyName);
        connection.setRequestProperty(RpcRequestBuilder.MODULE_BASE_HEADER, moduleBaseURL);
        connection.setRequestProperty("Content-Type", "text/x-gwt-rpc; charset=utf-8");
        connection.setRequestProperty("Content-Length", "" + requestData.getBytes("UTF-8").length);

        OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
        writer.write(requestData);
        writer.flush();
        writer.close();
    } catch (IOException e) {
        throw new InvocationException("IOException while sending RPC request", e);
    } finally {
        CookieHandler.setDefault(oldCookieHandler);
    }

    // Receive and process response
    try {
        statusCode = connection.getResponseCode();
        is = connection.getInputStream();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len;
        while ((len = is.read(buffer)) > 0) {
            baos.write(buffer, 0, len);
        }
        String encodedResponse = baos.toString("UTF8");
        if (DUMP_PAYLOAD) {
            System.out.println("Response code: " + statusCode);
            System.out.println("Response payload: " + encodedResponse);
        }

        // System.out.println("Response payload (len = " +
        // encodedResponse.length() + "): " + encodedResponse);
        if (statusCode != HttpURLConnection.HTTP_OK) {
            throw new StatusCodeException(statusCode, encodedResponse);
        } else if (encodedResponse == null) {
            // This can happen if the XHR is interrupted by the server dying
            throw new InvocationException("No response payload");
        } else if (isReturnValue(encodedResponse)) {
            encodedResponse = encodedResponse.substring(4);
            return responseReader.read(createStreamReader(encodedResponse));
        } else if (isThrownException(encodedResponse)) {
            encodedResponse = encodedResponse.substring(4);
            Throwable throwable = (Throwable) createStreamReader(encodedResponse).readObject();
            throw throwable;
        } else {
            throw new InvocationException("Unknown response " + encodedResponse);
        }
    } catch (IOException e) {
        throw new InvocationException("IOException while receiving RPC response", e);
    } catch (SerializationException e) {
        throw new InvocationException("Error while deserialization response", e);
    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (IOException ignore) {
            }
        }
        if (connection != null) {
            // connection.disconnect();
        }
    }
}

---