TError TClient::ReadRequest(rpc::TContainerRequest &request) {
TScopedLock lock(Mutex);
if (Processing) {
L_WRN() << "Client request before response: " << *this << std::endl;
return TError::Success();
}
if (Fd < 0)
return TError(EError::Unknown, "Connection closed");
if (Offset >= Buffer.size())
Buffer.resize(Offset + 4096);
ssize_t len = recv(Fd, &Buffer[Offset], Buffer.size() - Offset, MSG_DONTWAIT);
if (len > 0)
Offset += len;
else if (len == 0)
return TError(EError::Unknown, "recv return zero");
else if (errno != EAGAIN && errno != EWOULDBLOCK)
return TError(EError::Unknown, errno, "recv request failed");
if (Length && Offset < Length)
return TError::Queued();
google::protobuf::io::CodedInputStream input(&Buffer[0], Offset);
uint32_t length;
if (!input.ReadVarint32(&length))
return TError::Queued();
if (!Length) {
if (length > config().daemon().max_msg_len())
return TError(EError::Unknown, "oversized request: " + std::to_string(length));
Length = length + google::protobuf::io::CodedOutputStream::VarintSize32(length);
if (Buffer.size() < Length)
Buffer.resize(Length + 4096);
if (Offset < Length)
return TError::Queued();
}
if (!request.ParseFromCodedStream(&input))
return TError(EError::Unknown, "cannot parse request");
if (Offset > Length)
return TError(EError::Unknown, "garbage after request");
Processing = true;
return EpollLoop->StopInput(Fd);
}
TError TClient::ReadRequest(rpc::TContainerRequest &request) {
if (config().daemon().blocking_read()) {
InterruptibleInputStream InputStream(Fd);
ReadDelimitedFrom(&InputStream, &request);
return TError::Success();
}
if (Offset >= Buffer.size())
Buffer.resize(Offset + 4096);
ssize_t len = recv(Fd, &Buffer[Offset], Buffer.size() - Offset, MSG_DONTWAIT);
if (len > 0)
Offset += len;
else if (len == 0 || (errno != EAGAIN && errno != EWOULDBLOCK))
return TError(EError::Unknown, len ? errno : EIO, "recv request failed");
if (Length && Offset < Length)
return TError::Queued();
google::protobuf::io::CodedInputStream input(&Buffer[0], Offset);
uint32_t length;
if (!input.ReadVarint32(&length))
return TError::Queued();
if (!Length) {
if (length > config().daemon().max_msg_len())
return TError(EError::Unknown, "oversized request: " + std::to_string(length));
Length = length + google::protobuf::io::CodedOutputStream::VarintSize32(length);
if (Buffer.size() < Length)
Buffer.resize(Length);
if (Offset < Length)
return TError::Queued();
}
if (!request.ParseFromCodedStream(&input))
return TError(EError::Unknown, "cannot parse request");
if (Offset > Length)
return TError(EError::Unknown, "garbage after request");
return EpollLoop->StopInput(Fd);
}