diff options
Diffstat (limited to 'trunk/qpid/cpp/src/qpid/framing/SendContent.cpp')
-rw-r--r-- | trunk/qpid/cpp/src/qpid/framing/SendContent.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/trunk/qpid/cpp/src/qpid/framing/SendContent.cpp b/trunk/qpid/cpp/src/qpid/framing/SendContent.cpp new file mode 100644 index 0000000000..a26c19037b --- /dev/null +++ b/trunk/qpid/cpp/src/qpid/framing/SendContent.cpp @@ -0,0 +1,68 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ + +#include "qpid/framing/SendContent.h" + +qpid::framing::SendContent::SendContent(FrameHandler& h, uint16_t mfs, uint efc) : handler(h), + maxFrameSize(mfs), + expectedFrameCount(efc), frameCount(0) {} + +void qpid::framing::SendContent::operator()(const AMQFrame& f) +{ + bool first = frameCount == 0; + bool last = ++frameCount == expectedFrameCount; + + /*end of frame marker is included in frameOverhead() but not in + real frame size, hence substract -1 from frameOverhead()*/ + uint16_t maxContentSize = maxFrameSize - (AMQFrame::frameOverhead() - 1); + const AMQContentBody* body(f.castBody<AMQContentBody>()); + if (body->encodedSize() > maxContentSize) { + uint32_t offset = 0; + for (int chunk = body->encodedSize() / maxContentSize; chunk > 0; chunk--) { + sendFragment(*body, offset, maxContentSize, first && offset == 0, last && offset + maxContentSize == body->encodedSize()); + offset += maxContentSize; + } + uint32_t remainder = body->encodedSize() % maxContentSize; + if (remainder) { + sendFragment(*body, offset, remainder, first && offset == 0, last); + } + } else { + AMQFrame copy(f); + setFlags(copy, first, last); + handler.handle(copy); + } +} + +void qpid::framing::SendContent::sendFragment(const AMQContentBody& body, uint32_t offset, uint16_t size, bool first, bool last) const +{ + AMQFrame fragment((AMQContentBody(body.getData().substr(offset, size)))); + setFlags(fragment, first, last); + handler.handle(fragment); +} + +void qpid::framing::SendContent::setFlags(AMQFrame& f, bool first, bool last) const +{ + f.setBof(false); + f.setBos(first); + f.setEof(true);//content is always the last segment + f.setEos(last); +} + |