int mk_channel_write(struct mk_channel *channel)
{
size_t bytes = -1;
struct mk_iov *iov;
mk_ptr_t *ptr;
struct mk_stream *stream;
if (mk_list_is_empty(&channel->streams) == 0) {
MK_TRACE("[CH %i] CHANNEL_EMPTY", channel->fd);
return MK_CHANNEL_EMPTY;
}
/* Get the input source */
stream = mk_list_entry_first(&channel->streams, struct mk_stream, _head);
/*
* Based on the Stream type we consume on that way, not all inputs
* requires to read from buffer, e.g: Static File, Pipes.
*/
if (channel->type == MK_CHANNEL_SOCKET) {
if (stream->type == MK_STREAM_FILE) {
bytes = channel_write_stream_file(channel, stream);
}
else if (stream->type == MK_STREAM_IOV) {
MK_TRACE("[CH %i] STREAM_IOV, wrote %lu bytes",
channel->fd, stream->bytes_total);
iov = stream->buffer;
bytes = mk_socket_sendv(channel->fd, iov);
if (bytes > 0) {
/* Perform the adjustment on mk_iov */
mk_iov_consume(iov, bytes);
}
}
else if (stream->type == MK_STREAM_PTR) {
MK_TRACE("[CH %i] STREAM_PTR, bytes=%lu",
channel->fd, stream->bytes_total);
ptr = stream->buffer;
printf("data='%s'\n", ptr->data);
bytes = mk_socket_send(channel->fd, ptr->data, ptr->len);
if (bytes > 0) {
/* FIXME OFFSET */
}
}
if (bytes > 0) {
mk_stream_bytes_consumed(stream, bytes);
/* notification callback, optional */
if (stream->cb_bytes_consumed) {
stream->cb_bytes_consumed(stream, bytes);
}
if (stream->bytes_total == 0) {
MK_TRACE("Stream done, unlinking");
if (stream->cb_finished) {
stream->cb_finished(stream);
}
if (stream->preserve == MK_FALSE) {
mk_stream_unlink(stream);
}
}
if (mk_list_is_empty(&channel->streams) == 0) {
MK_TRACE("[CH %i] CHANNEL_DONE", channel->fd);
return MK_CHANNEL_DONE;
}
MK_TRACE("[CH %i] CHANNEL_FLUSH", channel->fd);
return MK_CHANNEL_FLUSH;
}
else if (bytes <= 0) {
if (stream->cb_exception) {
stream->cb_exception(stream, errno);
}
return MK_CHANNEL_ERROR;
}
}
return MK_CHANNEL_UNKNOWN;
}
/* Send response headers */
int mk_header_send(int fd, struct client_session *cs,
struct session_request *sr)
{
int i=0;
unsigned long len = 0;
char *buffer = 0;
mk_pointer response;
struct response_headers *sh;
struct mk_iov *iov;
sh = &sr->headers;
iov = mk_header_iov_get();
/* HTTP Status Code */
if (sh->status == MK_CUSTOM_STATUS) {
response.data = sh->custom_status.data;
response.len = sh->custom_status.len;
}
else {
for (i=0; i < status_response_len; i++) {
if (status_response[i].status == sh->status) {
response.data = status_response[i].response;
response.len = status_response[i].length;
break;
}
}
}
/* Invalid status set */
mk_bug(i == status_response_len);
mk_header_iov_add_entry(iov, response, mk_iov_none, MK_IOV_NOT_FREE_BUF);
/* Server details */
mk_iov_add_entry(iov, sr->host_conf->header_host_signature.data,
sr->host_conf->header_host_signature.len,
mk_iov_crlf, MK_IOV_NOT_FREE_BUF);
/* Date */
mk_iov_add_entry(iov,
mk_header_short_date.data,
mk_header_short_date.len,
header_current_time,
MK_IOV_NOT_FREE_BUF);
/* Last-Modified */
if (sh->last_modified > 0) {
mk_pointer *lm;
lm = mk_cache_get(mk_cache_header_lm);
lm->len = mk_utils_utime2gmt(&lm->data, sh->last_modified);
mk_iov_add_entry(iov, mk_header_last_modified.data,
mk_header_last_modified.len,
*lm, MK_IOV_NOT_FREE_BUF);
}
/* Connection */
if (sh->connection == 0) {
if (mk_http_keepalive_check(cs) == 0) {
if (sr->connection.len > 0) {
/* Get cached mk_pointers */
mk_pointer *ka_format = mk_cache_get(mk_cache_header_ka);
mk_pointer *ka_header = mk_cache_get(mk_cache_header_ka_max);
/* Compose header and add entries to iov */
mk_string_itop(config->max_keep_alive_request - cs->counter_connections, ka_header);
mk_iov_add_entry(iov, ka_format->data, ka_format->len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
mk_iov_add_entry(iov, ka_header->data, ka_header->len,
mk_header_conn_ka, MK_IOV_NOT_FREE_BUF);
}
}
else {
mk_iov_add_entry(iov,
mk_header_conn_close.data,
mk_header_conn_close.len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
}
}
/* Location */
if (sh->location != NULL) {
mk_iov_add_entry(iov,
mk_header_short_location.data,
mk_header_short_location.len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
mk_iov_add_entry(iov,
sh->location,
strlen(sh->location), mk_iov_crlf, MK_IOV_FREE_BUF);
}
/* allowed methods */
if (sh->allow_methods.len > 0) {
mk_iov_add_entry(iov,
mk_header_allow.data,
mk_header_allow.len,
sh->allow_methods, MK_IOV_NOT_FREE_BUF) ;
}
/* Content type */
if (sh->content_type.len > 0) {
mk_iov_add_entry(iov,
mk_header_short_ct.data,
mk_header_short_ct.len,
sh->content_type, MK_IOV_NOT_FREE_BUF);
}
/*
* Transfer Encoding: the transfer encoding header is just sent when
* the response has some content defined by the HTTP status response
*/
if ((sh->status < MK_REDIR_MULTIPLE) || (sh->status > MK_REDIR_USE_PROXY)) {
switch (sh->transfer_encoding) {
case MK_HEADER_TE_TYPE_CHUNKED:
mk_iov_add_entry(iov,
mk_header_te_chunked.data,
mk_header_te_chunked.len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
break;
}
}
/* Content-Encoding */
if (sh->content_encoding.len > 0) {
mk_iov_add_entry(iov, mk_header_content_encoding.data,
mk_header_content_encoding.len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
mk_iov_add_entry(iov, sh->content_encoding.data,
sh->content_encoding.len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
}
/* Content-Length */
if (sh->content_length >= 0) {
/* Map content length to MK_POINTER */
mk_pointer *cl;
cl = mk_cache_get(mk_cache_header_cl);
mk_string_itop(sh->content_length, cl);
/* Set headers */
mk_iov_add_entry(iov, mk_header_content_length.data,
mk_header_content_length.len,
*cl, MK_IOV_NOT_FREE_BUF);
}
if ((sh->content_length != 0 && (sh->ranges[0] >= 0 || sh->ranges[1] >= 0)) &&
config->resume == MK_TRUE) {
buffer = 0;
/* yyy- */
if (sh->ranges[0] >= 0 && sh->ranges[1] == -1) {
mk_string_build(&buffer,
&len,
"%s bytes %d-%ld/%ld",
RH_CONTENT_RANGE,
sh->ranges[0],
(sh->real_length - 1), sh->real_length);
mk_iov_add_entry(iov, buffer, len, mk_iov_crlf, MK_IOV_FREE_BUF);
}
/* yyy-xxx */
if (sh->ranges[0] >= 0 && sh->ranges[1] >= 0) {
mk_string_build(&buffer,
&len,
"%s bytes %d-%d/%ld",
RH_CONTENT_RANGE,
sh->ranges[0], sh->ranges[1], sh->real_length);
mk_iov_add_entry(iov, buffer, len, mk_iov_crlf, MK_IOV_FREE_BUF);
}
/* -xxx */
if (sh->ranges[0] == -1 && sh->ranges[1] > 0) {
mk_string_build(&buffer,
&len,
"%s bytes %ld-%ld/%ld",
RH_CONTENT_RANGE,
(sh->real_length - sh->ranges[1]),
(sh->real_length - 1), sh->real_length);
mk_iov_add_entry(iov, buffer, len, mk_iov_crlf, MK_IOV_FREE_BUF);
}
}
mk_socket_set_cork_flag(fd, TCP_CORK_ON);
if (sh->cgi == SH_NOCGI || sh->breakline == MK_HEADER_BREAKLINE) {
if (!sr->headers._extra_rows) {
mk_iov_add_entry(iov, mk_iov_crlf.data, mk_iov_crlf.len,
mk_iov_none, MK_IOV_NOT_FREE_BUF);
}
else {
mk_iov_add_entry(sr->headers._extra_rows, mk_iov_crlf.data,
mk_iov_crlf.len, mk_iov_none, MK_IOV_NOT_FREE_BUF);
}
}
mk_socket_sendv(fd, iov);
if (sr->headers._extra_rows) {
mk_socket_sendv(fd, sr->headers._extra_rows);
mk_iov_free(sr->headers._extra_rows);
sr->headers._extra_rows = NULL;
}
mk_header_iov_free(iov);
sh->sent = MK_TRUE;
return 0;
}