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

Example 1 with TokenIterator

use of org.apache.http.TokenIterator in project platform_external_apache-http by android.

the class DefaultConnectionReuseStrategy method keepAlive.

// see interface ConnectionReuseStrategy
public boolean keepAlive(final HttpResponse response, final HttpContext context) {
    if (response == null) {
        throw new IllegalArgumentException("HTTP response may not be null.");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null.");
    }
    HttpConnection conn = (HttpConnection) context.getAttribute(ExecutionContext.HTTP_CONNECTION);
    if (conn != null && !conn.isOpen())
        return false;
    // do NOT check for stale connection, that is an expensive operation
    // Check for a self-terminating entity. If the end of the entity will
    // be indicated by closing the connection, there is no keep-alive.
    HttpEntity entity = response.getEntity();
    ProtocolVersion ver = response.getStatusLine().getProtocolVersion();
    if (entity != null) {
        if (entity.getContentLength() < 0) {
            if (!entity.isChunked() || ver.lessEquals(HttpVersion.HTTP_1_0)) {
                // encoded, the connection cannot be reused
                return false;
            }
        }
    }
    // Check for the "Connection" header. If that is absent, check for
    // the "Proxy-Connection" header. The latter is an unspecified and
    // broken but unfortunately common extension of HTTP.
    HeaderIterator hit = response.headerIterator(HTTP.CONN_DIRECTIVE);
    if (!hit.hasNext())
        hit = response.headerIterator("Proxy-Connection");
    if (hit.hasNext()) {
        try {
            TokenIterator ti = createTokenIterator(hit);
            boolean keepalive = false;
            while (ti.hasNext()) {
                final String token = ti.nextToken();
                if (HTTP.CONN_CLOSE.equalsIgnoreCase(token)) {
                    return false;
                } else if (HTTP.CONN_KEEP_ALIVE.equalsIgnoreCase(token)) {
                    // continue the loop, there may be a "close" afterwards
                    keepalive = true;
                }
            }
            if (keepalive)
                return true;
        // neither "close" nor "keep-alive", use default policy
        } catch (ParseException px) {
            // we don't have logging in HttpCore, so the exception is lost
            return false;
        }
    }
    // default since HTTP/1.1 is persistent, before it was non-persistent
    return !ver.lessEquals(HttpVersion.HTTP_1_0);
}

Example 2 with TokenIterator

use of org.apache.http.TokenIterator in project robovm by robovm.

the class DefaultConnectionReuseStrategy method keepAlive.

// see interface ConnectionReuseStrategy
public boolean keepAlive(final HttpResponse response, final HttpContext context) {
    if (response == null) {
        throw new IllegalArgumentException("HTTP response may not be null.");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null.");
    }
    HttpConnection conn = (HttpConnection) context.getAttribute(ExecutionContext.HTTP_CONNECTION);
    if (conn != null && !conn.isOpen())
        return false;
    // do NOT check for stale connection, that is an expensive operation
    // Check for a self-terminating entity. If the end of the entity will
    // be indicated by closing the connection, there is no keep-alive.
    HttpEntity entity = response.getEntity();
    ProtocolVersion ver = response.getStatusLine().getProtocolVersion();
    if (entity != null) {
        if (entity.getContentLength() < 0) {
            if (!entity.isChunked() || ver.lessEquals(HttpVersion.HTTP_1_0)) {
                // encoded, the connection cannot be reused
                return false;
            }
        }
    }
    // Check for the "Connection" header. If that is absent, check for
    // the "Proxy-Connection" header. The latter is an unspecified and
    // broken but unfortunately common extension of HTTP.
    HeaderIterator hit = response.headerIterator(HTTP.CONN_DIRECTIVE);
    if (!hit.hasNext())
        hit = response.headerIterator("Proxy-Connection");
    if (hit.hasNext()) {
        try {
            TokenIterator ti = createTokenIterator(hit);
            boolean keepalive = false;
            while (ti.hasNext()) {
                final String token = ti.nextToken();
                if (HTTP.CONN_CLOSE.equalsIgnoreCase(token)) {
                    return false;
                } else if (HTTP.CONN_KEEP_ALIVE.equalsIgnoreCase(token)) {
                    // continue the loop, there may be a "close" afterwards
                    keepalive = true;
                }
            }
            if (keepalive)
                return true;
        // neither "close" nor "keep-alive", use default policy
        } catch (ParseException px) {
            // we don't have logging in HttpCore, so the exception is lost
            return false;
        }
    }
    // default since HTTP/1.1 is persistent, before it was non-persistent
    return !ver.lessEquals(HttpVersion.HTTP_1_0);
}

Example 3 with TokenIterator

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

the class DefaultConnectionReuseStrategy method keepAlive.

// see interface ConnectionReuseStrategy
public boolean keepAlive(final HttpResponse response, final HttpContext context) {
    if (response == null) {
        throw new IllegalArgumentException("HTTP response may not be null.");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null.");
    }
    HttpConnection conn = (HttpConnection) context.getAttribute(ExecutionContext.HTTP_CONNECTION);
    if (conn != null && !conn.isOpen())
        return false;
    // do NOT check for stale connection, that is an expensive operation
    // Check for a self-terminating entity. If the end of the entity will
    // be indicated by closing the connection, there is no keep-alive.
    HttpEntity entity = response.getEntity();
    ProtocolVersion ver = response.getStatusLine().getProtocolVersion();
    if (entity != null) {
        if (entity.getContentLength() < 0) {
            if (!entity.isChunked() || ver.lessEquals(HttpVersion.HTTP_1_0)) {
                // encoded, the connection cannot be reused
                return false;
            }
        }
    }
    // Check for the "Connection" header. If that is absent, check for
    // the "Proxy-Connection" header. The latter is an unspecified and
    // broken but unfortunately common extension of HTTP.
    HeaderIterator hit = response.headerIterator(HTTP.CONN_DIRECTIVE);
    if (!hit.hasNext())
        hit = response.headerIterator("Proxy-Connection");
    if (hit.hasNext()) {
        try {
            TokenIterator ti = createTokenIterator(hit);
            boolean keepalive = false;
            while (ti.hasNext()) {
                final String token = ti.nextToken();
                if (HTTP.CONN_CLOSE.equalsIgnoreCase(token)) {
                    return false;
                } else if (HTTP.CONN_KEEP_ALIVE.equalsIgnoreCase(token)) {
                    // continue the loop, there may be a "close" afterwards
                    keepalive = true;
                }
            }
            if (keepalive)
                return true;
        // neither "close" nor "keep-alive", use default policy
        } catch (ParseException px) {
            // we don't have logging in HttpCore, so the exception is lost
            return false;
        }
    }
    // default since HTTP/1.1 is persistent, before it was non-persistent
    return !ver.lessEquals(HttpVersion.HTTP_1_0);
}