Examples with ProtocolException org.apache.http.ProtocolException used on opensource projects

Example 31 with ProtocolException

use of org.apache.http.ProtocolException in project XobotOS by xamarin.

the class LaxContentLengthStrategy method determineLength.

public long determineLength(final HttpMessage message) throws HttpException {
    if (message == null) {
        throw new IllegalArgumentException("HTTP message may not be null");
    }
    HttpParams params = message.getParams();
    boolean strict = params.isParameterTrue(CoreProtocolPNames.STRICT_TRANSFER_ENCODING);
    Header transferEncodingHeader = message.getFirstHeader(HTTP.TRANSFER_ENCODING);
    Header contentLengthHeader = message.getFirstHeader(HTTP.CONTENT_LEN);
    // RFC2616, 4.4 item number 3
    if (transferEncodingHeader != null) {
        HeaderElement[] encodings = null;
        try {
            encodings = transferEncodingHeader.getElements();
        } catch (ParseException px) {
            throw new ProtocolException("Invalid Transfer-Encoding header value: " + transferEncodingHeader, px);
        }
        if (strict) {
            // Currently only chunk and identity are supported
            for (int i = 0; i < encodings.length; i++) {
                String encoding = encodings[i].getName();
                if (encoding != null && encoding.length() > 0 && !encoding.equalsIgnoreCase(HTTP.CHUNK_CODING) && !encoding.equalsIgnoreCase(HTTP.IDENTITY_CODING)) {
                    throw new ProtocolException("Unsupported transfer encoding: " + encoding);
                }
            }
        }
        // The chunked encoding must be the last one applied RFC2616, 14.41
        int len = encodings.length;
        if (HTTP.IDENTITY_CODING.equalsIgnoreCase(transferEncodingHeader.getValue())) {
            return IDENTITY;
        } else if ((len > 0) && (HTTP.CHUNK_CODING.equalsIgnoreCase(encodings[len - 1].getName()))) {
            return CHUNKED;
        } else {
            if (strict) {
                throw new ProtocolException("Chunk-encoding must be the last one applied");
            }
            return IDENTITY;
        }
    } else if (contentLengthHeader != null) {
        long contentlen = -1;
        Header[] headers = message.getHeaders(HTTP.CONTENT_LEN);
        if (strict && headers.length > 1) {
            throw new ProtocolException("Multiple content length headers");
        }
        for (int i = headers.length - 1; i >= 0; i--) {
            Header header = headers[i];
            try {
                contentlen = Long.parseLong(header.getValue());
                break;
            } catch (NumberFormatException e) {
                if (strict) {
                    throw new ProtocolException("Invalid content length: " + header.getValue());
                }
            }
        // See if we can have better luck with another header, if present
        }
        if (contentlen >= 0) {
            return contentlen;
        } else {
            return IDENTITY;
        }
    } else {
        return IDENTITY;
    }
}

Example 32 with ProtocolException

use of org.apache.http.ProtocolException in project XobotOS by xamarin.

the class StrictContentLengthStrategy method determineLength.

public long determineLength(final HttpMessage message) throws HttpException {
    if (message == null) {
        throw new IllegalArgumentException("HTTP message may not be null");
    }
    // Although Transfer-Encoding is specified as a list, in practice
    // it is either missing or has the single value "chunked". So we
    // treat it as a single-valued header here.
    Header transferEncodingHeader = message.getFirstHeader(HTTP.TRANSFER_ENCODING);
    Header contentLengthHeader = message.getFirstHeader(HTTP.CONTENT_LEN);
    if (transferEncodingHeader != null) {
        String s = transferEncodingHeader.getValue();
        if (HTTP.CHUNK_CODING.equalsIgnoreCase(s)) {
            if (message.getProtocolVersion().lessEquals(HttpVersion.HTTP_1_0)) {
                throw new ProtocolException("Chunked transfer encoding not allowed for " + message.getProtocolVersion());
            }
            return CHUNKED;
        } else if (HTTP.IDENTITY_CODING.equalsIgnoreCase(s)) {
            return IDENTITY;
        } else {
            throw new ProtocolException("Unsupported transfer encoding: " + s);
        }
    } else if (contentLengthHeader != null) {
        String s = contentLengthHeader.getValue();
        try {
            long len = Long.parseLong(s);
            return len;
        } catch (NumberFormatException e) {
            throw new ProtocolException("Invalid content length: " + s);
        }
    } else {
        return IDENTITY;
    }
}

Example 33 with ProtocolException

use of org.apache.http.ProtocolException in project XobotOS by xamarin.

the class AbstractMessageParser method parseHeaders.

/**
     * Parses HTTP headers from the data receiver stream according to the generic 
     * format as given in Section 3.1 of RFC 822, RFC-2616 Section 4 and 19.3.
     *  
     * @param inbuffer Session input buffer
     * @param maxHeaderCount maximum number of headers allowed. If the number
     *  of headers received from the data stream exceeds maxCount value, an
     *  IOException will be thrown. Setting this parameter to a negative value
     *  or zero  will disable the check.
     * @param maxLineLen maximum number of characters for a header line,
     *                   including the continuation lines
     * @return array of HTTP headers
     * 
     * @throws HttpException
     * @throws IOException
     */
public static Header[] parseHeaders(final SessionInputBuffer inbuffer, int maxHeaderCount, int maxLineLen, LineParser parser) throws HttpException, IOException {
    if (inbuffer == null) {
        throw new IllegalArgumentException("Session input buffer may not be null");
    }
    if (parser == null)
        parser = BasicLineParser.DEFAULT;
    ArrayList headerLines = new ArrayList();
    CharArrayBuffer current = null;
    CharArrayBuffer previous = null;
    for (; ; ) {
        if (current == null) {
            current = new CharArrayBuffer(64);
        } else {
            current.clear();
        }
        int l = inbuffer.readLine(current);
        if (l == -1 || current.length() < 1) {
            break;
        }
        // discussion on folded headers
        if ((current.charAt(0) == ' ' || current.charAt(0) == '\t') && previous != null) {
            // we have continuation folded header
            // so append value
            int i = 0;
            while (i < current.length()) {
                char ch = current.charAt(i);
                if (ch != ' ' && ch != '\t') {
                    break;
                }
                i++;
            }
            if (maxLineLen > 0 && previous.length() + 1 + current.length() - i > maxLineLen) {
                throw new IOException("Maximum line length limit exceeded");
            }
            previous.append(' ');
            previous.append(current, i, current.length() - i);
        } else {
            headerLines.add(current);
            previous = current;
            current = null;
        }
        if (maxHeaderCount > 0 && headerLines.size() >= maxHeaderCount) {
            throw new IOException("Maximum header count exceeded");
        }
    }
    Header[] headers = new Header[headerLines.size()];
    for (int i = 0; i < headerLines.size(); i++) {
        CharArrayBuffer buffer = (CharArrayBuffer) headerLines.get(i);
        try {
            headers[i] = parser.parseHeader(buffer);
        } catch (ParseException ex) {
            throw new ProtocolException(ex.getMessage());
        }
    }
    return headers;
}

Example 34 with ProtocolException

use of org.apache.http.ProtocolException in project XobotOS by xamarin.

the class DefaultResponseParser method parseHead.

@Override
protected HttpMessage parseHead(final SessionInputBuffer sessionBuffer) throws IOException, HttpException {
    // clear the buffer
    this.lineBuf.clear();
    //read out the HTTP status string
    int count = 0;
    ParserCursor cursor = null;
    do {
        int i = sessionBuffer.readLine(this.lineBuf);
        if (i == -1 && count == 0) {
            // The server just dropped connection on us
            throw new NoHttpResponseException("The target server failed to respond");
        }
        cursor = new ParserCursor(0, this.lineBuf.length());
        if (lineParser.hasProtocolVersion(this.lineBuf, cursor)) {
            // Got one
            break;
        } else if (i == -1 || count >= this.maxGarbageLines) {
            // Giving up
            throw new ProtocolException("The server failed to respond with a " + "valid HTTP response");
        }
        count++;
    } while (true);
    //create the status line from the status string
    StatusLine statusline = lineParser.parseStatusLine(this.lineBuf, cursor);
    return this.responseFactory.newHttpResponse(statusline, null);
}

Example 35 with ProtocolException

use of org.apache.http.ProtocolException in project XobotOS by xamarin.

the class AbstractMessageParser method parse.

public HttpMessage parse() throws IOException, HttpException {
    HttpMessage message = null;
    try {
        message = parseHead(this.sessionBuffer);
    } catch (ParseException px) {
        throw new ProtocolException(px.getMessage(), px);
    }
    Header[] headers = AbstractMessageParser.parseHeaders(this.sessionBuffer, this.maxHeaderCount, this.maxLineLen, this.lineParser);
    message.setHeaders(headers);
    return message;
}