public void Add(Guid ruleGuid, TransferItem transferItem, bool storeIsAll)
{
var requestLine = transferItem.HttpRequestLine.URL;
string index;
if (storeIsAll == false)
{
if (ContainsItem(ruleGuid, requestLine, out index))
{
lock (sync) {
RemoveItemFromCache(index, requestLine);
}
}
}
index = Guid.NewGuid().ToString();
var item = new QItemCache {
RuleGuid = ruleGuid,
ResponseId = transferItem.BrowserSocket.guid,
RequestLine = requestLine,
Response = null,
IsAllStore = storeIsAll,
Key = index,
StatusCode = -1
};
var policy = new CacheItemPolicy();
cache.Add(index, item, policy);
responseGuidLinkIndex.TryAdd(item.ResponseId, index);
urlLinkIndex.TryAdd(index, item.RequestLine);
ruleGuidLinkIndex.TryAdd(index, item.RuleGuid);
}
protected override void OnReceiveResponse(TransferItem item)
{
if (Rules.Where(rule => rule.IsAccept(item.HttpRequestLine.URL)).Any(rule => rule.IsStoreResponse))
{
cache.SetValue(item.BrowserSocket.guid, item.Response, item.ResponseStatusLine.StatusCode);
}
}
protected override void OnReceiveRequest(TransferItem item)
{
if (CheckOnBlackList(item) == false)
{
return;
}
CheckOnRules(item);
}
private bool CheckOnBlackList(TransferItem item)
{
// In BlackList must be rule with QBehavior = Block
if (BlackList.Any(rule => rule.IsAccept(item.HttpRequestLine.URI)))
{
item.State.NextStep = null;
return(false);
}
return(true);
}
private void CheckOnRules(TransferItem item)
{
foreach (var rule in Rules)
{
if (rule.IsAccept(item.HttpRequestLine.URL))
{
if (rule.IsStoreResponse)
{
cache.Add(rule.Guid, item, rule.IsAllStoreResponse);
}
item.HttpRequestLine.URL = rule.Redirect(item.HttpRequestLine.URL);
break;
}
}
}
private void CallOnReceiveResponse(string responseMessageChunked)
{
var transferItem = new TransferItem();
transferItem.Headers = ResponseHeaders;
transferItem.HttpRequestLine = RequestLine;
transferItem.ResponseStatusLine = ResponseStatusLine;
transferItem.BrowserSocket = BrowserSocket;
transferItem.RemoteSocket = RemoteSocket;
transferItem.State = State;
transferItem.Response = GetResponse(responseMessageChunked);
OnReceiveResponse(transferItem);
if (State.PersistConnectionRemoteSocket == false && RemoteSocket != null)
{
RemoteSocket.CloseSocket();
RemoteSocket = null;
}
State.NextStep = null;
}
/// <summary>
/// </summary>
protected virtual void OnReceiveRequest(TransferItem item)
{
throw new NotImplementedException();
}
/// <summary>
/// Pipeline step: read the HTTP request from the client, schedule
/// the next step to be <c>SendRequest</c>, and call
/// <c>OnReceiveRequest</c>
/// </summary>
protected virtual void ReadRequest()
{
try {
RequestLine = new HttpRequestLine(BrowserSocket);
}
catch (IoBroken) {
// The request line is the first line of a HTTP request.
// If none comes in a timely fashion, then we eventually
// get a IoBroken exception, which is common enough
// not to be rethrown.
AbortRequest();
return;
}
catch (SocketException) {
// Ditto
AbortRequest();
return;
}
RequestHeaders = new HttpHeaders(BrowserSocket);
if (RequestLine.Method.Equals("CONNECT"))
{
BrowserSocket.Send501();
AbortRequest();
return;
}
// We call OnReceiveRequest now because Connect() will
// modify the request URI.
State.NextStep = SendRequest;
var item = new TransferItem();
item.Headers = RequestHeaders;
item.HttpRequestLine = RequestLine;
item.BrowserSocket = BrowserSocket;
item.RemoteSocket = RemoteSocket;
item.State = State;
OnReceiveRequest(item);
RequestLine.URI = item.HttpRequestLine.URL;
// Now we parse the request to:
// 1) find out where we should connect
// 2) find out whether there is a message body in the request
// 3) find out whether the BrowserSocket connection should be kept-alive
if (State.NextStep != null)
{
// Step 1)
if (RelayHttpProxyHost == null)
{
int NewDestinationPort;
string NewDestinationHost = ParseDestinationHostAndPort(RequestLine, RequestHeaders, out NewDestinationPort);
Console.WriteLine("Connect to {0}", NewDestinationHost);
Connect(NewDestinationHost, NewDestinationPort);
}
else
{
Connect(RelayHttpProxyHost, RelayHttpProxyPort);
}
// Step 2)
// Find out whether the request has a message body
// (RFC 2616, section 4.3); if it has, get the message length
State.RequestHasMessage = false;
State.RequestMessageLength = 0;
State.RequestMessageChunked = false;
if (RequestHeaders.TransferEncoding != null)
{
State.RequestHasMessage = true;
State.RequestMessageChunked = Array.IndexOf(RequestHeaders.TransferEncoding, "chunked") >= 0;
Debug.Assert(State.RequestMessageChunked);
}
else if (RequestHeaders.ContentLength != null)
{
State.RequestMessageLength = (uint)RequestHeaders.ContentLength;
// Note: HTTP 1.0 wants "Content-Length: 0" when there
// is no entity body. (RFC 1945, section 7.2)
if (State.RequestMessageLength > 0)
{
State.RequestHasMessage = true;
}
}
}
// Step 3)
State.UseDefaultPersistBrowserSocket = true;
if (RequestHeaders.ProxyConnection != null)
{
// Note: This is not part of the HTTP 1.1 standard. See
// http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/web-proxy-connection-header.html
foreach (string i in RequestHeaders.ProxyConnection)
{
if (i.Equals("close"))
{
State.PersistConnectionBrowserSocket = false;
State.UseDefaultPersistBrowserSocket = false;
break;
}
if (i.Equals("keep-alive"))
{
State.PersistConnectionBrowserSocket = true;
State.UseDefaultPersistBrowserSocket = false;
break;
}
}
if (RelayHttpProxyHost == null)
{
RequestHeaders.ProxyConnection = null;
}
}
// Note: we do not remove fields mentioned in the
// 'Connection' header (the specs say we should).
}
private void CallOnReceiveResponse(string responseMessageChunked)
{
var transferItem = new TransferItem();
transferItem.Headers = ResponseHeaders;
transferItem.HttpRequestLine = RequestLine;
transferItem.ResponseStatusLine = ResponseStatusLine;
transferItem.BrowserSocket = BrowserSocket;
transferItem.RemoteSocket = RemoteSocket;
transferItem.State = State;
transferItem.Response = GetResponse(responseMessageChunked);
OnReceiveResponse(transferItem);
if (State.PersistConnectionRemoteSocket == false && RemoteSocket != null) {
RemoteSocket.CloseSocket();
RemoteSocket = null;
}
State.NextStep = null;
}
/// <summary>
/// Pipeline step: read the HTTP request from the client, schedule
/// the next step to be <c>SendRequest</c>, and call
/// <c>OnReceiveRequest</c>
/// </summary>
protected virtual void ReadRequest()
{
try {
RequestLine = new HttpRequestLine(BrowserSocket);
}
catch (IoBroken) {
// The request line is the first line of a HTTP request.
// If none comes in a timely fashion, then we eventually
// get a IoBroken exception, which is common enough
// not to be rethrown.
AbortRequest();
return;
}
catch (SocketException) {
// Ditto
AbortRequest();
return;
}
RequestHeaders = new HttpHeaders(BrowserSocket);
if (RequestLine.Method.Equals("CONNECT")) {
BrowserSocket.Send501();
AbortRequest();
return;
}
// We call OnReceiveRequest now because Connect() will
// modify the request URI.
State.NextStep = SendRequest;
var item = new TransferItem();
item.Headers = RequestHeaders;
item.HttpRequestLine = RequestLine;
item.BrowserSocket = BrowserSocket;
item.RemoteSocket = RemoteSocket;
item.State = State;
OnReceiveRequest(item);
RequestLine.URI = item.HttpRequestLine.URL;
// Now we parse the request to:
// 1) find out where we should connect
// 2) find out whether there is a message body in the request
// 3) find out whether the BrowserSocket connection should be kept-alive
if (State.NextStep != null) {
// Step 1)
if (RelayHttpProxyHost == null) {
int NewDestinationPort;
string NewDestinationHost = ParseDestinationHostAndPort(RequestLine, RequestHeaders, out NewDestinationPort);
Console.WriteLine("Connect to {0}", NewDestinationHost);
Connect(NewDestinationHost, NewDestinationPort);
} else {
Connect(RelayHttpProxyHost, RelayHttpProxyPort);
}
// Step 2)
// Find out whether the request has a message body
// (RFC 2616, section 4.3); if it has, get the message length
State.RequestHasMessage = false;
State.RequestMessageLength = 0;
State.RequestMessageChunked = false;
if (RequestHeaders.TransferEncoding != null) {
State.RequestHasMessage = true;
State.RequestMessageChunked = Array.IndexOf(RequestHeaders.TransferEncoding, "chunked") >= 0;
Debug.Assert(State.RequestMessageChunked);
} else if (RequestHeaders.ContentLength != null) {
State.RequestMessageLength = (uint)RequestHeaders.ContentLength;
// Note: HTTP 1.0 wants "Content-Length: 0" when there
// is no entity body. (RFC 1945, section 7.2)
if (State.RequestMessageLength > 0) {
State.RequestHasMessage = true;
}
}
}
// Step 3)
State.UseDefaultPersistBrowserSocket = true;
if (RequestHeaders.ProxyConnection != null) {
// Note: This is not part of the HTTP 1.1 standard. See
// http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/web-proxy-connection-header.html
foreach (string i in RequestHeaders.ProxyConnection) {
if (i.Equals("close")) {
State.PersistConnectionBrowserSocket = false;
State.UseDefaultPersistBrowserSocket = false;
break;
}
if (i.Equals("keep-alive")) {
State.PersistConnectionBrowserSocket = true;
State.UseDefaultPersistBrowserSocket = false;
break;
}
}
if (RelayHttpProxyHost == null) {
RequestHeaders.ProxyConnection = null;
}
}
// Note: we do not remove fields mentioned in the
// 'Connection' header (the specs say we should).
}
protected override void OnReceiveResponse(TransferItem item)
{
if (Rules.Where(rule => rule.IsAccept(item.HttpRequestLine.URL)).Any(rule => rule.IsStoreResponse)) {
cache.SetValue(item.BrowserSocket.guid, item.Response, item.ResponseStatusLine.StatusCode);
}
}
protected override void OnReceiveRequest(TransferItem item)
{
if (CheckOnBlackList(item) == false) {
return;
}
CheckOnRules(item);
}
private void CheckOnRules(TransferItem item)
{
foreach (var rule in Rules) {
if (rule.IsAccept(item.HttpRequestLine.URL)) {
if (rule.IsStoreResponse) {
cache.Add(rule.Guid, item, rule.IsAllStoreResponse);
}
item.HttpRequestLine.URL = rule.Redirect(item.HttpRequestLine.URL);
break;
}
}
}
private bool CheckOnBlackList(TransferItem item)
{
// In BlackList must be rule with QBehavior = Block
if (BlackList.Any(rule => rule.IsAccept(item.HttpRequestLine.URI))) {
item.State.NextStep = null;
return false;
}
return true;
}
/// <summary>
/// </summary>
protected virtual void OnReceiveResponse(TransferItem item)
{
throw new NotImplementedException();
}
