List of usage examples for io.vertx.core.http HttpClientRequest isChunked
boolean isChunked();
From source file:io.nitor.api.backend.proxy.Proxy.java
License:Apache License
public void handle(RoutingContext routingContext) { final HttpServerRequest sreq = routingContext.request(); final boolean isTls = isOrigReqHttps || "https".equals(routingContext.request().scheme()); final boolean isHTTP2 = routingContext.request().version() == HTTP_2; final String chost = getRemoteAddress(routingContext); final ProxyTracer tracer = tracerFactory.get(); String reqId = sreq.headers().get(requestIdHeader); boolean hadRequestId = reqId != null; if (reqId == null) { reqId = Long.toString(requestId.getAndIncrement()); }/*from ww w . j a v a2 s . c om*/ tracer.incomingRequestStart(routingContext, isTls, isHTTP2, chost, reqId); if (!hadRequestId) { sreq.headers().add(requestIdHeader, reqId); } HttpServerResponse sres = sreq.response(); sres.exceptionHandler(tracer::outgoingResponseException); routingContext.addHeadersEndHandler(tracer::outgoingResponseHeadersEnd); sres.bodyEndHandler(tracer::outgoingResponseBodyEnd); if (!isHTTP2) { sres.headers().add("keep-alive", keepAliveHeaderValue); sres.headers().add("connection", "keep-alive"); } sreq.exceptionHandler(t -> { tracer.incomingRequestException(t); routingContext.fail(new ProxyException(500, RejectReason.incomingRequestFail, t)); }); final State state = new State(); targetResolver.resolveNextHop(routingContext, nextHop -> { if (nextHop == null) { NullPointerException e = new NullPointerException("nextHop must not be null"); tracer.incomingRequestException(e); throw e; } tracer.nextHopResolved(nextHop); MultiMap sreqh = sreq.headers(); String origHost = null; if (isHTTP2) { origHost = sreqh.get(":authority"); } if (origHost == null) { origHost = sreqh.get("Host"); } if (origHost == null) { ProxyException e = new ProxyException(400, RejectReason.noHostHeader, null); tracer.incomingRequestException(e); routingContext.fail(e); return; } boolean isWebsocket = !isHTTP2 && "websocket".equals(sreqh.get("upgrade")); if (isWebsocket) { MultiMap creqh = new CaseInsensitiveHeaders(); propagateRequestHeaders(isTls, chost, sreqh, origHost, creqh); if (nextHop.hostHeader != null) { creqh.set("Host", nextHop.hostHeader); } else { creqh.remove("Host"); } tracer.outgoingWebsocketInitial(creqh); client.websocket(nextHop.socketPort, nextHop.socketHost, nextHop.uri, creqh, cws -> { // lol no headers copied final boolean[] isClosed = { false }; ServerWebSocket sws = sreq.upgrade(); tracer.websocketEstablished(); for (final WebSocketBase[] pair : new WebSocketBase[][] { { sws, cws }, { cws, sws } }) { pair[0].frameHandler(pair[1]::writeFrame).closeHandler(v -> { if (!isClosed[0]) { tracer.establishedWebsocketClosed(); isClosed[0] = true; pair[1].close(); } }).exceptionHandler(t -> { tracer.establishedWebsocketException(t); t.printStackTrace(); if (!isClosed[0]) { isClosed[0] = true; try { pair[1].close(); } catch (IllegalStateException e) { // whatever } } }); } }, t -> { tracer.outgoingWebsocketException(t); t.printStackTrace(); sres.setStatusCode(HttpResponseStatus.BAD_GATEWAY.code()); if (t instanceof WebSocketHandshakeRejectedException) { WebSocketHandshakeRejectedException e = (WebSocketHandshakeRejectedException) t; sres.setStatusCode(e.resp.status().code()); sres.setStatusMessage(e.resp.status().reasonPhrase()); MultiMap cresh = new HeadersAdaptor(e.resp.headers()); copyEndToEndHeaders(cresh, sres.headers()); sres.headers().add("keep-alive", keepAliveHeaderValue); sres.headers().add("connection", "keep-alive"); sres.headers().set("content-length", "0"); } tracer.outgoingResponseInitial(); tracer.outgoingResponseHeadersEnd(null); sres.end(); tracer.outgoingResponseBodyEnd(null); }); return; } String expectStr; state.expecting100 = null != (expectStr = sreq.headers().get("expect")) && expectStr.equalsIgnoreCase("100-continue"); HttpClientRequest creq = client.request(sreq.method(), nextHop.socketPort, nextHop.socketHost, nextHop.uri); creq.setTimeout(SECONDS.toMillis(clientReceiveTimeout)); creq.handler(cres -> { cres.exceptionHandler(t -> { tracer.incomingResponseException(t); if (!state.serverFinished) { state.clientFinished = true; state.serverFinished = true; routingContext.fail(new ProxyException(502, RejectReason.incomingResponseFail, t)); } }); tracer.incomingResponseStart(cres); sres.setStatusCode(cres.statusCode()); sres.setStatusMessage(cres.statusMessage()); MultiMap headers = cres.headers(); copyEndToEndHeaders(headers, sres.headers()); final boolean reqCompletedBeforeResponse = state.requestComplete; if (state.expecting100) { log.info("Got " + cres.statusCode() + " instead of 100 Continue"); if (!isHTTP2) { if (/* state.receivedRequestBodyBefore100 && */ !reqCompletedBeforeResponse) { // TODO investigate whether vertx is able to handle the server request correctly without us closing the conn // but actually the client might have data in transit.. log.info( "Client might have started streaming data anyway, so request message boundary is lost. Continue streaming, but close server connection after response complete."); sres.headers().set("connection", "close"); } else { log.info( "Client had streamed the complete data anyway. Can carry on without closing server conn."); } } } if (!isHTTP2) { if (!sres.headers().contains("connection") || !sres.headers().get("connection").contains("close")) { sres.headers().add("keep-alive", keepAliveHeaderValue); sres.headers().add("connection", "keep-alive"); } } if (!headers.contains("content-length")) { sres.setChunked(true); } tracer.outgoingResponseInitial(); cres.endHandler(v -> { tracer.incomingResponseEnd(); state.clientFinished = true; if (!state.serverFinished) { state.serverFinished = true; sres.end(); } if (state.expecting100 && /* state.receivedRequestBodyBefore100 && */ !reqCompletedBeforeResponse) { log.info( "Client had started streaming data anyway, so request message boundary is lost. Close client connection."); creq.connection().close(); } }); pump.start(cres, sres, tracer); }); creq.exceptionHandler(t -> { tracer.outgoingRequestException(t); if (!state.serverFinished) { state.clientFinished = true; state.serverFinished = true; routingContext.fail(new ProxyException(502, RejectReason.outgoingRequestFail, t)); } }); MultiMap creqh = creq.headers(); propagateRequestHeaders(isTls, chost, sreqh, origHost, creqh); creq.headers().addAll(addHeaders); if (nextHop.hostHeader != null) { creq.setHost(nextHop.hostHeader); } else { creqh.remove("host"); } if (sreqh.getAll("transfer-encoding").stream().anyMatch(v -> v.equals("chunked"))) { creq.setChunked(true); } sres.closeHandler(v -> { if (!state.clientFinished) { state.clientFinished = true; tracer.incomingConnectionPrematurelyClosed(); HttpConnection connection = creq.connection(); if (connection != null) { connection.close(); } // else TODO } if (!state.serverFinished) { state.serverFinished = true; routingContext.fail(new ProxyException(0, RejectReason.outgoingResponseFail, null)); } }); tracer.outgoingRequestInitial(creq); if (sreq.isEnded()) { state.requestComplete = true; Buffer body = routingContext.getBody(); if (body == null || body.length() == 0) { creq.end(); } else { if (!creq.isChunked()) { creq.putHeader("content-length", Integer.toString(body.length())); } creq.end(routingContext.getBody()); } tracer.incomingRequestEnd(); } else { sreq.endHandler(v -> { state.requestComplete = true; try { creq.end(); } catch (IllegalStateException ex) { // ignore - nothing can be done - the request is already complete/closed - TODO log? } tracer.incomingRequestEnd(); }); ReadStream<Buffer> sreqStream; if (state.expecting100) { log.debug("Expect: 100"); creq.continueHandler(v -> { // no longer expecting 100, it's like a normal not-expecting-100 request from now on state.expecting100 = false; // since we received 100 Continue, we know the server agrees to accept all the request body, so we can assume we are forgiven for sending data early state.receivedRequestBodyBefore100 = false; log.info("Got 100, propagating"); sres.writeContinue(); }); // in this case we must flush request headers before the body is sent creq.sendHead(); sreqStream = new ReadStreamWrapper<Buffer>(sreq) { final LazyHandlerWrapper<Buffer> handlerWrapper = new LazyHandlerWrapper<Buffer>( super::handler, null) { @Override public void handle(Buffer event) { log.info("Got first request body chunk"); if (state.expecting100) { log.info("Got request body before '100 Continue'"); // data received despite not having yet recived 100-continue state.receivedRequestBodyBefore100 = true; } deactivate(); wrapped.handle(event); } }; @Override public ReadStream<Buffer> handler(Handler<Buffer> handler) { return handlerWrapper.handler(handler, this); } }; } else { log.debug("Not expect-100"); sreqStream = sreq; } pump.start(sreqStream, creq, tracer); } }); }