bool TunIntf::sendPacketToHost(std::unique_ptr<RxPacket> pkt) {
CHECK(fd_ != -1);
const int l2Len = EthHdr::SIZE;
auto buf = pkt->buf();
if (buf->length() <= l2Len) {
LOG(ERROR) << "Received a too small packet with length " << buf->length();
return false;
}
// skip L2 header
buf->trimStart(l2Len);
int ret = 0;
do {
ret = write(fd_, buf->data(), buf->length());
} while (ret == -1 && errno == EINTR);
if (ret < 0) {
sysLogError(ret, "Failed to send packet to the host from router ", rid_);
return false;
} else if (ret < buf->length()) {
LOG(ERROR) << "Failed to send full packet to host from router " << rid_
<< ret << " bytes sent instead of " << buf->length();
} else {
VLOG(4) << "Send packet (" << ret << " bytes) to host from router "
<< rid_;
}
return true;
}
void CompressionVarintTest::runSimpleTest(const DataHolder& dh) {
auto original = IOBuf::wrapBuffer(dh.data(uncompressedLength_));
auto compressed = codec_->compress(original.get());
auto breakPoint =
1UL +
Random::rand64(std::max(9UL, oneBasedMsbPos(uncompressedLength_)) / 9UL);
auto tinyBuf = IOBuf::copyBuffer(compressed->data(),
std::min(compressed->length(), breakPoint));
compressed->trimStart(breakPoint);
tinyBuf->prependChain(std::move(compressed));
compressed = std::move(tinyBuf);
auto uncompressed = codec_->uncompress(compressed.get());
EXPECT_EQ(uncompressedLength_, uncompressed->computeChainDataLength());
EXPECT_EQ(dh.hash(uncompressedLength_), hashIOBuf(uncompressed.get()));
}
void removeBlanks(char s[]) {
trimEnd(s);
bool inBlank = false;
for (int i = 0; s[i] != '\0'; ++i) {
if (s[i] == '\t' || s[i] == ' ') {
if (inBlank) {
for (int j = i; s[j] != '\0'; ++j) {
s[j] = s[j+1];
}
--i;
} else {
s[i] = ' ';
inBlank = true;
}
} else {
inBlank = false;
}
}
trimStart(s);
}
/*
* Removes blanks (spaces, tabs, CR, LF) at the both ends of the given string
* The string is modified and returned
*/
char* trim(char* str) {
return trimEnd(trimStart(str));
}
void trim(char* command)
{
trimEnd(command);
trimStart(command);
}
inline std::string& trim(std::string &string, const char* chars = " \t")
{
return trimStart(trimEnd(string, chars), chars);
}
