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Merged spdylay_session_pack_data_overwrite() into spdylay_session_pack_data(). 

spdylay_session_pack_data() now takes the maximum length of DATA payload.
This commit is contained in:
Tatsuhiro Tsujikawa 2012-02-22 23:58:33 +09:00
parent 05627f7712
commit 5408a21ce9
3 changed files with 25 additions and 49 deletions
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4
lib/spdylay_frame.h
View File

@ -37,8 +37,8 @@
#define SPDYLAY_LENGTH_MASK 0xffffff #define SPDYLAY_LENGTH_MASK 0xffffff
#define SPDYLAY_VERSION_MASK 0x7fff #define SPDYLAY_VERSION_MASK 0x7fff
/* DATA frame length. This is 8+4KiB */ /* The length of DATA frame payload. */
#define SPDYLAY_DATA_FRAME_LENGTH 4104 #define SPDYLAY_DATA_PAYLOAD_LENGTH 4096
/* The number of bytes of frame header. */ /* The number of bytes of frame header. */
#define SPDYLAY_FRAME_HEAD_LENGTH 8 #define SPDYLAY_FRAME_HEAD_LENGTH 8

44
lib/spdylay_session.c
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@ -560,6 +560,7 @@ ssize_t spdylay_session_prep_frame(spdylay_session *session,
framebuflen = spdylay_session_pack_data(session, framebuflen = spdylay_session_pack_data(session,
&session->aob.framebuf, &session->aob.framebuf,
&session->aob.framebufmax, &session->aob.framebufmax,
SPDYLAY_DATA_PAYLOAD_LENGTH,
&item->frame->data); &item->frame->data);
if(framebuflen == SPDYLAY_ERR_DEFERRED) { if(framebuflen == SPDYLAY_ERR_DEFERRED) {
spdylay_stream *stream = spdylay_session_get_stream spdylay_stream *stream = spdylay_session_get_stream
@ -788,11 +789,10 @@ static int spdylay_session_after_frame_sent(spdylay_session *session)
/* If priority of this stream is higher or equal to other stream /* If priority of this stream is higher or equal to other stream
waiting at the top of the queue, we continue to send this waiting at the top of the queue, we continue to send this
data. */ data. */
/* We assume that buffer has at least r = spdylay_session_pack_data(session,
SPDYLAY_DATA_FRAME_LENGTH. */ &session->aob.framebuf,
r = spdylay_session_pack_data_overwrite(session, &session->aob.framebufmax,
session->aob.framebuf, SPDYLAY_DATA_PAYLOAD_LENGTH,
SPDYLAY_DATA_FRAME_LENGTH,
&frame->data); &frame->data);
if(r == SPDYLAY_ERR_DEFERRED) { if(r == SPDYLAY_ERR_DEFERRED) {
spdylay_stream *stream = spdylay_stream *stream =
@ -1661,44 +1661,36 @@ int spdylay_session_add_goaway(spdylay_session *session,
ssize_t spdylay_session_pack_data(spdylay_session *session, ssize_t spdylay_session_pack_data(spdylay_session *session,
uint8_t **buf_ptr, size_t *buflen_ptr, uint8_t **buf_ptr, size_t *buflen_ptr,
size_t datamax,
spdylay_data *frame) spdylay_data *frame)
{ {
ssize_t framelen = SPDYLAY_DATA_FRAME_LENGTH; ssize_t framelen = datamax+8, r;
int r; int eof;
uint8_t flags;
r = spdylay_reserve_buffer(buf_ptr, buflen_ptr, framelen); r = spdylay_reserve_buffer(buf_ptr, buflen_ptr, framelen);
if(r != 0) { if(r != 0) {
return r; return r;
} }
framelen = spdylay_session_pack_data_overwrite(session, *buf_ptr, framelen, eof = 0;
frame);
return framelen;
}
ssize_t spdylay_session_pack_data_overwrite(spdylay_session *session,
uint8_t *buf, size_t len,
spdylay_data *frame)
{
ssize_t r;
int eof = 0;
uint8_t flags = 0;
r = frame->data_prd.read_callback r = frame->data_prd.read_callback
(session, frame->stream_id, buf+8, len-8, &eof, &frame->data_prd.source, (session, frame->stream_id, (*buf_ptr)+8, datamax,
session->user_data); &eof, &frame->data_prd.source, session->user_data);
if(r < 0) { if(r < 0) {
return r; return r;
} else if(len < r) { } else if(datamax < r) {
return SPDYLAY_ERR_CALLBACK_FAILURE; return SPDYLAY_ERR_CALLBACK_FAILURE;
} }
memset(buf, 0, SPDYLAY_HEAD_LEN); memset(*buf_ptr, 0, SPDYLAY_HEAD_LEN);
spdylay_put_uint32be(&buf[0], frame->stream_id); spdylay_put_uint32be(&(*buf_ptr)[0], frame->stream_id);
spdylay_put_uint32be(&buf[4], r); spdylay_put_uint32be(&(*buf_ptr)[4], r);
flags = 0;
if(eof) { if(eof) {
frame->eof = 1; frame->eof = 1;
if(frame->flags & SPDYLAY_FLAG_FIN) { if(frame->flags & SPDYLAY_FLAG_FIN) {
flags |= SPDYLAY_FLAG_FIN; flags |= SPDYLAY_FLAG_FIN;
} }
} }
buf[4] = flags; (*buf_ptr)[4] = flags;
return r+8; return r+8;
} }

24
lib/spdylay_session.h
View File

@ -57,7 +57,7 @@ typedef struct {
message block of SSLv3/TLSv1 */ message block of SSLv3/TLSv1 */
#define SPDYLAY_INBOUND_BUFFER_LENGTH 16384 #define SPDYLAY_INBOUND_BUFFER_LENGTH 16384
#define SPDYLAY_INITIAL_OUTBOUND_FRAMEBUF_LENGTH SPDYLAY_DATA_FRAME_LENGTH #define SPDYLAY_INITIAL_OUTBOUND_FRAMEBUF_LENGTH (SPDYLAY_DATA_PAYLOAD_LENGTH+8)
#define SPDYLAY_INITIAL_INBOUND_FRAMEBUF_LENGTH \ #define SPDYLAY_INITIAL_INBOUND_FRAMEBUF_LENGTH \
SPDYLAY_INITIAL_OUTBOUND_FRAMEBUF_LENGTH SPDYLAY_INITIAL_OUTBOUND_FRAMEBUF_LENGTH
#define SPDYLAY_INITIAL_NV_BUFFER_LENGTH 4096 #define SPDYLAY_INITIAL_NV_BUFFER_LENGTH 4096
@ -384,7 +384,8 @@ spdylay_stream* spdylay_session_get_stream(spdylay_session *session,
* |*buf_ptr|. The capacity of |*buf_ptr| is |*buflen_ptr| * |*buf_ptr|. The capacity of |*buf_ptr| is |*buflen_ptr|
* length. This function expands |*buf_ptr| as necessary to store * length. This function expands |*buf_ptr| as necessary to store
* given |frame|. It packs header in first 8 bytes. Remaining bytes * given |frame|. It packs header in first 8 bytes. Remaining bytes
* are filled using frame->data_prd. * are the DATA apyload and are filled using |frame->data_prd|. The
* length of payload is at most |datamax| bytes.
* *
* This function returns the size of packed frame if it succeeds, or * This function returns the size of packed frame if it succeeds, or
* one of the following negative error codes: * one of the following negative error codes:
@ -398,24 +399,7 @@ spdylay_stream* spdylay_session_get_stream(spdylay_session *session,
*/ */
ssize_t spdylay_session_pack_data(spdylay_session *session, ssize_t spdylay_session_pack_data(spdylay_session *session,
uint8_t **buf_ptr, size_t *buflen_ptr, uint8_t **buf_ptr, size_t *buflen_ptr,
spdylay_data *frame); size_t datamax,
/*
* Packs DATA frame |frame| in wire frame format and store it in
* |buf|. |len| must be greater than or equal to 8.
*
* This function returns the size of packed frame if it succeeds, or
* one of the following negative error codes:
*
* SPDYLAY_ERR_NOMEM
* Out of memory.
* SPDYLAY_ERR_DEFERRED
* The DATA frame is postponed.
* SPDYLAY_ERR_CALLBACK_FAILURE
* The read_callback failed.
*/
ssize_t spdylay_session_pack_data_overwrite(spdylay_session *session,
uint8_t *buf, size_t len,
spdylay_data *frame); spdylay_data *frame);
/* /*