client.cpp
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#include "client.h"
Client::Client(int fd, ThreadData_p threadData) :
fd(fd),
threadData(threadData)
{
int flags = fcntl(fd, F_GETFL);
fcntl(fd, F_SETFL, flags | O_NONBLOCK);
readbuf = (char*)malloc(CLIENT_BUFFER_SIZE);
}
Client::~Client()
{
epoll_ctl(threadData->epollfd, EPOLL_CTL_DEL, fd, NULL); // NOTE: the last NULL can cause crash on old kernels
close(fd);
free(readbuf);
}
// false means any kind of error we want to get rid of the client for.
bool Client::readFdIntoBuffer()
{
int read_size = getMaxWriteSize();
int n;
while ((n = read(fd, &readbuf[wi], read_size)) != 0)
{
if (n < 0)
{
if (errno == EINTR)
continue;
if (errno == EAGAIN || errno == EWOULDBLOCK)
break;
else
return false;
}
wi += n;
size_t bytesUsed = getBufBytesUsed();
// TODO: we need a buffer to keep partial frames in, so/and can we reduce the size of this buffer again periodically?
if (bytesUsed >= bufsize)
{
const size_t newBufSize = bufsize * 2;
readbuf = (char*)realloc(readbuf, newBufSize);
bufsize = newBufSize;
}
wi = wi % bufsize;
read_size = getMaxWriteSize();
}
if (n == 0) // client disconnected.
{
return false;
}
return true;
}
void Client::writeTest()
{
char *p = &readbuf[ri];
size_t max_read = getMaxReadSize();
ri = (ri + max_read) % bufsize;
write(fd, p, max_read);
}