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#include "first.h"
#include "network_backends.h"
#include "network.h"
#include "log.h"
#include "sys-socket.h"
#include <unistd.h>
#include <errno.h>
#include <string.h>
int network_write_mem_chunk(server *srv, connection *con, int fd, chunkqueue *cq, off_t *p_max_bytes) {
chunk* const c = cq->first;
off_t c_len;
ssize_t r;
UNUSED(con);
force_assert(NULL != c);
force_assert(MEM_CHUNK == c->type);
force_assert(c->offset >= 0 && c->offset <= (off_t)buffer_string_length(c->mem));
c_len = buffer_string_length(c->mem) - c->offset;
if (c_len > *p_max_bytes) c_len = *p_max_bytes;
if (0 == c_len) {
chunkqueue_remove_finished_chunks(cq);
return 0;
}
#if defined(__WIN32)
if ((r = send(fd, c->mem->ptr + c->offset, c_len, 0)) < 0) {
int lastError = WSAGetLastError();
switch (lastError) {
case WSAEINTR:
case WSAEWOULDBLOCK:
break;
case WSAECONNRESET:
case WSAETIMEDOUT:
case WSAECONNABORTED:
return -2;
default:
log_error_write(srv, __FILE__, __LINE__, "sdd",
"send failed: ", lastError, fd);
return -1;
}
}
#else /* __WIN32 */
if ((r = write(fd, c->mem->ptr + c->offset, c_len)) < 0) {
switch (errno) {
case EAGAIN:
case EINTR:
break;
case EPIPE:
case ECONNRESET:
return -2;
default:
log_error_write(srv, __FILE__, __LINE__, "ssd",
"write failed:", strerror(errno), fd);
return -1;
}
}
#endif /* __WIN32 */
if (r >= 0) {
*p_max_bytes -= r;
chunkqueue_mark_written(cq, r);
}
return (r > 0 && r == c_len) ? 0 : -3;
}
int network_write_chunkqueue_write(server *srv, connection *con, int fd, chunkqueue *cq, off_t max_bytes) {
while (max_bytes > 0 && NULL != cq->first) {
int r = -1;
switch (cq->first->type) {
case MEM_CHUNK:
r = network_write_mem_chunk(srv, con, fd, cq, &max_bytes);
break;
case FILE_CHUNK:
r = network_write_file_chunk_mmap(srv, con, fd, cq, &max_bytes);
break;
}
if (-3 == r) return 0;
if (0 != r) return r;
}
return 0;
}
#if defined(USE_SENDFILE)
int network_write_chunkqueue_sendfile(server *srv, connection *con, int fd, chunkqueue *cq, off_t max_bytes) {
while (max_bytes > 0 && NULL != cq->first) {
int r = -1;
switch (cq->first->type) {
case MEM_CHUNK:
r = network_writev_mem_chunks(srv, con, fd, cq, &max_bytes);
break;
case FILE_CHUNK:
r = network_write_file_chunk_sendfile(srv, con, fd, cq, &max_bytes);
break;
}
if (-3 == r) return 0;
if (0 != r) return r;
}
return 0;
}
#endif