Ok, took the opportunity to add that to my pytest suite in mod-h2.
You need a local "pytest", "curl" and "nghttp" executable. If you checkout
https://github.com/icing/mod_h2 master, run the configure:
> autoreconf -i
> automake
> autoconf
> ./configure --with-apxs=/opt/apache-2.4.x/bin/apxs --enable-werror
> make
> make test
("/opt/apache-2.4.x" is where I install my locally build 2.4.x branch. Adjust
to your needs.)
You should see, on an unpatched 2.4.x
=========================================================================
test session starts platform darwin -- Python 2.7.10, pytest-3.0.7, py-1.4.33,
pluggy-0.4.0
rootdir: /Users/sei/projects/mod-h2/test/e2e, inifile:
collected 86 items
test_001_httpd_alive.py ..
test_002_curl_basics.py ......
test_003_get.py .........
test_004_post.py ........
test_100_conn_reuse.py .....
test_101_ssl_reneg.py .......
test_102_require.py ..
test_103_upgrade.py ...........
test_200_header_invalid.py ...
test_201_header_conditional.py ..
test_202_trailer.py ....
test_300_interim.py ...
test_400_push.py ...............
test_401_early_hints.py ..
test_500_proxy.py .......
===================================================================== 86 passed
in 23.13 seconds
On a 2.4.x installed with the proposed proxy patches, the test_500_24 fails
with a 400 response code from the server.
You can just run that test case via
> (cd test/e2e && pytest -k 500_24)
Hope this helps.
-Stefan
> Am 12.02.2019 um 13:59 schrieb Yann Ylavic <ylavic....@gmail.com>:
>
> OK, thanks Stefan, will look at it.
>
>
> On Tue, Feb 12, 2019 at 11:12 AM ste...@eissing.org <ste...@eissing.org>
> wrote:
>>
>> Yann,
>>
>> this works fine in my tests on trunk. However on 2.4.x I get often errors
>> when uploading data without content-length.
>>
>> Scenario from the h2 test suite, HTTP/2 on the front, old skool HTTP/1.1
>> proxy to itself:
>>
>>> while true; do nghttp -v --expect-continue --data=gen/tmp/updata
>>> -H'Content-Type: multipart/form-data; boundary=DSAJKcd9876'
>>> --no-content-length http://test.example.org:12345/proxy/upload.py; done |
>>> fgrep 400
>>
>> [ 0.009] recv (stream_id=13) :status: 400
>> <title>400 Bad Request</title>
>> [ 0.007] recv (stream_id=13) :status: 400
>> <title>400 Bad Request</title>
>> ...
>>
>>
>> /etc/hosts
>>
>> 127.0.0.1 test.example.org test
>>
>> httpd config:
>>
>> ProxyPass "/proxy" "balancer://http-local"
>> ProxyPassReverse "/proxy" "balancer://http-local"
>>
>> <Proxy "balancer://http-local">
>> BalancerMember "http://127.0.0.1:12345"; hcmethod=GET hcuri=/ ttl=4
>> </Proxy>
>>
>>
>>> cat gen/tmp/updata
>> --DSAJKcd9876
>> Content-Disposition: form-data; name="xxx"; filename="xxxxx"
>> Content-Type: text/plain
>>
>> testing mod_h2
>> --DSAJKcd9876
>> Content-Disposition: form-data; name="file"; filename="data-1k"
>> Content-Type: application/octet-stream
>> Content-Transfer-Encoding: binary
>>
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>> 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678
>>
>> --DSAJKcd9876--
>>
>>
>>
>>> Am 11.02.2019 um 22:55 schrieb yla...@apache.org:
>>>
>>> Author: ylavic
>>> Date: Mon Feb 11 21:55:43 2019
>>> New Revision: 1853407
>>>
>>> URL: http://svn.apache.org/viewvc?rev=1853407&view=rev
>>> Log:
>>> mod_proxy_http: rework the flushing strategy when forwarding the request
>>> body.
>>>
>>> Since the forwarding of 100-continue (end to end) in r1836588, we depended
>>> on
>>> reading all of the requested HUGE_STRING_LEN bytes to avoid the flushes, but
>>> this is a bit fragile.
>>>
>>> This commit introduces the new stream_reqbody_read() function which will
>>> try a
>>> nonblocking read first and, if it fails with EAGAIN, will flush on the
>>> backend
>>> side before blocking for the next client side read.
>>>
>>> We can then use it in stream_reqbody_{chunked,cl}() to flush client
>>> forwarded
>>> data only when necessary. This both allows "optimal" flushing and simplifies
>>> code (note that spool_reqbody_cl() also makes use of the new function but
>>> not
>>> its nonblocking/flush functionality, thus only for consistency with the two
>>> others, simplification and common error handling).
>>>
>>> Also, since proxy_http_req_t::flushall/subprocess_env::proxy-flushall are
>>> now
>>> meaningless (and unused) on the backend side, they are renamed respectively
>>> to
>>> prefetch_nonblocking/proxy-prefetch-nonblocking, and solely determine
>>> whether
>>> to prefetch in nonblocking mode or not. These flags were trunk only and may
>>> not be really useful if we decided to prefetch in nonblocking mode in any
>>> case,
>>> but for 2.4.x the opt-in looks wise.
>>>
>>> Modified:
>>> httpd/httpd/trunk/modules/http2/mod_proxy_http2.c
>>> httpd/httpd/trunk/modules/proxy/mod_proxy_http.c
>>>
>>> Modified: httpd/httpd/trunk/modules/http2/mod_proxy_http2.c
>>> URL:
>>> http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/http2/mod_proxy_http2.c?rev=1853407&r1=1853406&r2=1853407&view=diff
>>> ==============================================================================
>>> --- httpd/httpd/trunk/modules/http2/mod_proxy_http2.c (original)
>>> +++ httpd/httpd/trunk/modules/http2/mod_proxy_http2.c Mon Feb 11 21:55:43
>>> 2019
>>> @@ -77,7 +77,6 @@ typedef struct h2_proxy_ctx {
>>>
>>> unsigned standalone : 1;
>>> unsigned is_ssl : 1;
>>> - unsigned flushall : 1;
>>>
>>> apr_status_t r_status; /* status of our first request work */
>>> h2_proxy_session *session; /* current http2 session against backend */
>>> @@ -509,7 +508,6 @@ static int proxy_http2_handler(request_r
>>> ctx->is_ssl = is_ssl;
>>> ctx->worker = worker;
>>> ctx->conf = conf;
>>> - ctx->flushall = apr_table_get(r->subprocess_env, "proxy-flushall")?
>>> 1 : 0;
>>> ctx->r_status = HTTP_SERVICE_UNAVAILABLE;
>>>
>>> h2_proxy_fifo_set_create(&ctx->requests, ctx->pool, 100);
>>>
>>> Modified: httpd/httpd/trunk/modules/proxy/mod_proxy_http.c
>>> URL:
>>> http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.c?rev=1853407&r1=1853406&r2=1853407&view=diff
>>> ==============================================================================
>>> --- httpd/httpd/trunk/modules/proxy/mod_proxy_http.c (original)
>>> +++ httpd/httpd/trunk/modules/proxy/mod_proxy_http.c Mon Feb 11 21:55:43
>>> 2019
>>> @@ -250,34 +250,80 @@ typedef struct {
>>> apr_bucket_brigade *header_brigade;
>>> apr_bucket_brigade *input_brigade;
>>> char *old_cl_val, *old_te_val;
>>> - apr_off_t cl_val, bytes_spooled;
>>> + apr_off_t cl_val;
>>>
>>> rb_methods rb_method;
>>>
>>> int expecting_100;
>>> unsigned int do_100_continue:1,
>>> - flushall:1;
>>> + prefetch_nonblocking:1;
>>> } proxy_http_req_t;
>>>
>>> +/* Read what's in the client pipe. If nonblocking is set and read is
>>> EAGAIN,
>>> + * pass a FLUSH bucket to the backend and read again in blocking mode.
>>> + */
>>> +static int stream_reqbody_read(proxy_http_req_t *req, apr_bucket_brigade
>>> *bb,
>>> + int nonblocking)
>>> +{
>>> + request_rec *r = req->r;
>>> + proxy_conn_rec *p_conn = req->backend;
>>> + apr_bucket_alloc_t *bucket_alloc = req->bucket_alloc;
>>> + apr_read_type_e block = nonblocking ? APR_NONBLOCK_READ :
>>> APR_BLOCK_READ;
>>> + apr_status_t status;
>>> + int rv;
>>> +
>>> + for (;;) {
>>> + status = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
>>> + block, HUGE_STRING_LEN);
>>> + if (block == APR_BLOCK_READ
>>> + || (!APR_STATUS_IS_EAGAIN(status)
>>> + && (status != APR_SUCCESS || !APR_BRIGADE_EMPTY(bb))))
>>> {
>>> + break;
>>> + }
>>> +
>>> + /* Flush and retry (blocking) */
>>> + apr_brigade_cleanup(bb);
>>> + rv = ap_proxy_pass_brigade(bucket_alloc, r, p_conn, req->origin,
>>> bb, 1);
>>> + if (rv != OK) {
>>> + return rv;
>>> + }
>>> + block = APR_BLOCK_READ;
>>> + }
>>> +
>>> + if (status != APR_SUCCESS) {
>>> + conn_rec *c = r->connection;
>>> + ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(02608)
>>> + "read request body failed to %pI (%s)"
>>> + " from %s (%s)", p_conn->addr,
>>> + p_conn->hostname ? p_conn->hostname: "",
>>> + c->client_ip, c->remote_host ? c->remote_host: "");
>>> + return ap_map_http_request_error(status, HTTP_BAD_REQUEST);
>>> + }
>>> +
>>> + return OK;
>>> +}
>>> +
>>> static int stream_reqbody_chunked(proxy_http_req_t *req)
>>> {
>>> request_rec *r = req->r;
>>> int seen_eos = 0, rv = OK;
>>> apr_size_t hdr_len;
>>> apr_off_t bytes;
>>> - apr_status_t status;
>>> char chunk_hdr[20]; /* must be here due to transient bucket. */
>>> proxy_conn_rec *p_conn = req->backend;
>>> apr_bucket_alloc_t *bucket_alloc = req->bucket_alloc;
>>> apr_bucket_brigade *header_brigade = req->header_brigade;
>>> apr_bucket_brigade *input_brigade = req->input_brigade;
>>> - apr_bucket_brigade *bb;
>>> apr_bucket *e;
>>>
>>> - while (APR_BRIGADE_EMPTY(input_brigade)
>>> - || !APR_BUCKET_IS_EOS(APR_BRIGADE_FIRST(input_brigade)))
>>> - {
>>> - int flush = req->flushall;
>>> + do {
>>> + if (APR_BRIGADE_EMPTY(input_brigade)
>>> + && APR_BRIGADE_EMPTY(header_brigade)) {
>>> + rv = stream_reqbody_read(req, input_brigade, 1);
>>> + if (rv != OK) {
>>> + return rv;
>>> + }
>>> + }
>>>
>>> if (!APR_BRIGADE_EMPTY(input_brigade)) {
>>> /* If this brigade contains EOS, either stop or remove it. */
>>> @@ -290,12 +336,6 @@ static int stream_reqbody_chunked(proxy_
>>> }
>>>
>>> apr_brigade_length(input_brigade, 1, &bytes);
>>> -
>>> - /* Flush only if we did not get the requested #bytes. */
>>> - if (bytes < HUGE_STRING_LEN) {
>>> - flush = 0;
>>> - }
>>> -
>>> hdr_len = apr_snprintf(chunk_hdr, sizeof(chunk_hdr),
>>> "%" APR_UINT64_T_HEX_FMT CRLF,
>>> (apr_uint64_t)bytes);
>>> @@ -312,108 +352,62 @@ static int stream_reqbody_chunked(proxy_
>>> APR_BRIGADE_INSERT_TAIL(input_brigade, e);
>>> }
>>>
>>> - if (!APR_BRIGADE_EMPTY(header_brigade)) {
>>> - /* we never sent the header brigade, so go ahead and
>>> - * take care of that now
>>> - */
>>> - bb = header_brigade;
>>> - APR_BRIGADE_CONCAT(bb, input_brigade);
>>> -
>>> - /* Flush now since we have the header and (enough of) the
>>> - * prefeched body, or racing KeepAliveTimeout on the backend
>>> - * side may kill our connection while we read more client data.
>>> - */
>>> - flush = 1;
>>> - }
>>> - else {
>>> - bb = input_brigade;
>>> - }
>>> + /* If we never sent the header brigade, so go ahead and
>>> + * take care of that now by prepending it.
>>> + */
>>> + APR_BRIGADE_PREPEND(input_brigade, header_brigade);
>>>
>>> - /* Once we hit EOS, flush below this loop with the EOS chunk. */
>>> + /* No flush here since it's done either on the next loop depending
>>> + * on stream_reqbody_read(), or after the loop with the EOS chunk.
>>> + */
>>> rv = ap_proxy_pass_brigade(bucket_alloc, r, p_conn, req->origin,
>>> - bb, flush && !seen_eos);
>>> + input_brigade, 0);
>>> if (rv != OK) {
>>> return rv;
>>> }
>>> -
>>> - if (seen_eos) {
>>> - break;
>>> - }
>>> -
>>> - status = ap_get_brigade(r->input_filters, input_brigade,
>>> - AP_MODE_READBYTES, APR_BLOCK_READ,
>>> - HUGE_STRING_LEN);
>>> -
>>> - if (status != APR_SUCCESS) {
>>> - conn_rec *c = r->connection;
>>> - ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(02608)
>>> - "read request body failed to %pI (%s)"
>>> - " from %s (%s)", p_conn->addr,
>>> - p_conn->hostname ? p_conn->hostname: "",
>>> - c->client_ip, c->remote_host ? c->remote_host:
>>> "");
>>> - return ap_map_http_request_error(status, HTTP_BAD_REQUEST);
>>> - }
>>> - }
>>> -
>>> - if (!APR_BRIGADE_EMPTY(header_brigade)) {
>>> - /* we never sent the header brigade because there was no request
>>> body;
>>> - * send it now
>>> - */
>>> - bb = header_brigade;
>>> - }
>>> - else {
>>> - if (!APR_BRIGADE_EMPTY(input_brigade)) {
>>> - /* input brigade still has an EOS which we can't pass to the
>>> output_filters. */
>>> - e = APR_BRIGADE_LAST(input_brigade);
>>> - AP_DEBUG_ASSERT(APR_BUCKET_IS_EOS(e));
>>> - apr_bucket_delete(e);
>>> - }
>>> - bb = input_brigade;
>>> - }
>>> + } while (!seen_eos);
>>>
>>> e = apr_bucket_immortal_create(ZERO_ASCII CRLF_ASCII
>>> /* <trailers> */
>>> CRLF_ASCII,
>>> 5, bucket_alloc);
>>> - APR_BRIGADE_INSERT_TAIL(bb, e);
>>> + APR_BRIGADE_INSERT_TAIL(input_brigade, e);
>>>
>>> if (apr_table_get(r->subprocess_env, "proxy-sendextracrlf")) {
>>> e = apr_bucket_immortal_create(CRLF_ASCII, 2, bucket_alloc);
>>> - APR_BRIGADE_INSERT_TAIL(bb, e);
>>> + APR_BRIGADE_INSERT_TAIL(input_brigade, e);
>>> }
>>>
>>> /* Now we have headers-only, or the chunk EOS mark; flush it */
>>> - return ap_proxy_pass_brigade(bucket_alloc, r, p_conn, req->origin, bb,
>>> 1);
>>> + return ap_proxy_pass_brigade(bucket_alloc, r, p_conn, req->origin,
>>> + input_brigade, 1);
>>> }
>>>
>>> static int stream_reqbody_cl(proxy_http_req_t *req)
>>> {
>>> request_rec *r = req->r;
>>> - int seen_eos = 0, rv = 0;
>>> - apr_status_t status = APR_SUCCESS;
>>> + int seen_eos = 0, rv = OK;
>>> proxy_conn_rec *p_conn = req->backend;
>>> apr_bucket_alloc_t *bucket_alloc = req->bucket_alloc;
>>> apr_bucket_brigade *header_brigade = req->header_brigade;
>>> apr_bucket_brigade *input_brigade = req->input_brigade;
>>> - apr_bucket_brigade *bb;
>>> apr_bucket *e;
>>> apr_off_t bytes;
>>> apr_off_t bytes_streamed = 0;
>>>
>>> - while (APR_BRIGADE_EMPTY(input_brigade)
>>> - || !APR_BUCKET_IS_EOS(APR_BRIGADE_FIRST(input_brigade)))
>>> - {
>>> - int flush = req->flushall;
>>> + do {
>>> + if (APR_BRIGADE_EMPTY(input_brigade)
>>> + && APR_BRIGADE_EMPTY(header_brigade)) {
>>> + rv = stream_reqbody_read(req, input_brigade, 1);
>>> + if (rv != OK) {
>>> + return rv;
>>> + }
>>> + }
>>>
>>> if (!APR_BRIGADE_EMPTY(input_brigade)) {
>>> apr_brigade_length(input_brigade, 1, &bytes);
>>> bytes_streamed += bytes;
>>>
>>> - /* Flush only if we did not get the requested #bytes. */
>>> - if (bytes < HUGE_STRING_LEN) {
>>> - flush = 0;
>>> - }
>>> -
>>> /* If this brigade contains EOS, either stop or remove it. */
>>> if (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(input_brigade))) {
>>> seen_eos = 1;
>>> @@ -448,48 +442,18 @@ static int stream_reqbody_cl(proxy_http_
>>> }
>>> }
>>>
>>> - if (!APR_BRIGADE_EMPTY(header_brigade)) {
>>> - /* we never sent the header brigade, so go ahead and
>>> - * take care of that now
>>> - */
>>> - bb = header_brigade;
>>> - APR_BRIGADE_CONCAT(bb, input_brigade);
>>> -
>>> - /* Flush now since we have the header and (enough of) the
>>> - * prefeched body, or racing KeepAliveTimeout on the backend
>>> - * side may kill our connection while we read more client data.
>>> - */
>>> - flush = 1;
>>> - }
>>> - else {
>>> - bb = input_brigade;
>>> - }
>>> + /* If we never sent the header brigade, so go ahead and
>>> + * take care of that now by prepending it.
>>> + */
>>> + APR_BRIGADE_PREPEND(input_brigade, header_brigade);
>>>
>>> - /* Once we hit EOS, we are ready to flush. */
>>> + /* Flush here on EOS because we won't stream_reqbody_read() again
>>> */
>>> rv = ap_proxy_pass_brigade(bucket_alloc, r, p_conn, req->origin,
>>> - input_brigade, flush || seen_eos);
>>> + input_brigade, seen_eos);
>>> if (rv != OK) {
>>> return rv;
>>> }
>>> -
>>> - if (seen_eos) {
>>> - break;
>>> - }
>>> -
>>> - status = ap_get_brigade(r->input_filters, input_brigade,
>>> - AP_MODE_READBYTES, APR_BLOCK_READ,
>>> - HUGE_STRING_LEN);
>>> -
>>> - if (status != APR_SUCCESS) {
>>> - conn_rec *c = r->connection;
>>> - ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(02609)
>>> - "read request body failed to %pI (%s)"
>>> - " from %s (%s)", p_conn->addr,
>>> - p_conn->hostname ? p_conn->hostname: "",
>>> - c->client_ip, c->remote_host ? c->remote_host:
>>> "");
>>> - return ap_map_http_request_error(status, HTTP_BAD_REQUEST);
>>> - }
>>> - }
>>> + } while (!seen_eos);
>>>
>>> if (bytes_streamed != req->cl_val) {
>>> ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01087)
>>> @@ -498,22 +462,14 @@ static int stream_reqbody_cl(proxy_http_
>>> return HTTP_BAD_REQUEST;
>>> }
>>>
>>> - if (!APR_BRIGADE_EMPTY(header_brigade)) {
>>> - /* we never sent the header brigade since there was no request
>>> - * body; send it now with the flush flag
>>> - */
>>> - return ap_proxy_pass_brigade(bucket_alloc, r, p_conn, req->origin,
>>> - header_brigade, 1);
>>> - }
>>> -
>>> return OK;
>>> }
>>>
>>> -static int spool_reqbody_cl(proxy_http_req_t *req)
>>> +static int spool_reqbody_cl(proxy_http_req_t *req, apr_off_t
>>> *bytes_spooled)
>>> {
>>> apr_pool_t *p = req->p;
>>> request_rec *r = req->r;
>>> - int seen_eos = 0;
>>> + int seen_eos = 0, rv = OK;
>>> apr_status_t status = APR_SUCCESS;
>>> apr_bucket_alloc_t *bucket_alloc = req->bucket_alloc;
>>> apr_bucket_brigade *input_brigade = req->input_brigade;
>>> @@ -524,17 +480,18 @@ static int spool_reqbody_cl(proxy_http_r
>>> apr_off_t limit;
>>>
>>> body_brigade = apr_brigade_create(p, bucket_alloc);
>>> + *bytes_spooled = 0;
>>>
>>> limit = ap_get_limit_req_body(r);
>>>
>>> - if (APR_BRIGADE_EMPTY(input_brigade)) {
>>> - status = ap_get_brigade(r->input_filters, input_brigade,
>>> - AP_MODE_READBYTES, APR_BLOCK_READ,
>>> - HUGE_STRING_LEN);
>>> - }
>>> - while (status == APR_SUCCESS
>>> - && !APR_BUCKET_IS_EOS(APR_BRIGADE_FIRST(input_brigade)))
>>> - {
>>> + do {
>>> + if (APR_BRIGADE_EMPTY(input_brigade)) {
>>> + rv = stream_reqbody_read(req, input_brigade, 0);
>>> + if (rv != OK) {
>>> + return rv;
>>> + }
>>> + }
>>> +
>>> /* If this brigade contains EOS, either stop or remove it. */
>>> if (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(input_brigade))) {
>>> seen_eos = 1;
>>> @@ -546,13 +503,13 @@ static int spool_reqbody_cl(proxy_http_r
>>>
>>> apr_brigade_length(input_brigade, 1, &bytes);
>>>
>>> - if (req->bytes_spooled + bytes > MAX_MEM_SPOOL) {
>>> + if (*bytes_spooled + bytes > MAX_MEM_SPOOL) {
>>> /*
>>> * LimitRequestBody does not affect Proxy requests (Should it?).
>>> * Let it take effect if we decide to store the body in a
>>> * temporary file on disk.
>>> */
>>> - if (limit && (req->bytes_spooled + bytes > limit)) {
>>> + if (limit && (*bytes_spooled + bytes > limit)) {
>>> ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01088)
>>> "Request body is larger than the configured "
>>> "limit of %" APR_OFF_T_FMT, limit);
>>> @@ -622,23 +579,8 @@ static int spool_reqbody_cl(proxy_http_r
>>>
>>> }
>>>
>>> - req->bytes_spooled += bytes;
>>> -
>>> - if (seen_eos) {
>>> - break;
>>> - }
>>> -
>>> - status = ap_get_brigade(r->input_filters, input_brigade,
>>> - AP_MODE_READBYTES, APR_BLOCK_READ,
>>> - HUGE_STRING_LEN);
>>> - }
>>> - if (status != APR_SUCCESS) {
>>> - conn_rec *c = r->connection;
>>> - ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(02610)
>>> - "read request body failed from %s (%s)",
>>> - c->client_ip, c->remote_host ? c->remote_host: "");
>>> - return ap_map_http_request_error(status, HTTP_BAD_REQUEST);
>>> - }
>>> + *bytes_spooled += bytes;
>>> + } while (!seen_eos);
>>>
>>> APR_BRIGADE_CONCAT(input_brigade, body_brigade);
>>> if (tmpfile) {
>>> @@ -740,7 +682,7 @@ static int ap_proxy_http_prefetch(proxy_
>>> * reasonable size.
>>> */
>>> temp_brigade = apr_brigade_create(p, bucket_alloc);
>>> - block = req->flushall ? APR_NONBLOCK_READ : APR_BLOCK_READ;
>>> + block = req->prefetch_nonblocking ? APR_NONBLOCK_READ : APR_BLOCK_READ;
>>> do {
>>> status = ap_get_brigade(r->input_filters, temp_brigade,
>>> AP_MODE_READBYTES, block,
>>> @@ -791,7 +733,7 @@ static int ap_proxy_http_prefetch(proxy_
>>> */
>>> } while ((bytes_read < MAX_MEM_SPOOL - 80)
>>> && !APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(input_brigade))
>>> - && !req->flushall);
>>> + && !req->prefetch_nonblocking);
>>>
>>> /* Use chunked request body encoding or send a content-length body?
>>> *
>>> @@ -899,16 +841,12 @@ static int ap_proxy_http_prefetch(proxy_
>>> /* If we have to spool the body, do it now, before connecting or
>>> * reusing the backend connection.
>>> */
>>> - rv = spool_reqbody_cl(req);
>>> + rv = spool_reqbody_cl(req, &bytes);
>>> if (rv != OK) {
>>> return rv;
>>> }
>>> - if (bytes_read > 0
>>> - || req->old_te_val
>>> - || req->old_cl_val
>>> - || req->bytes_spooled) {
>>> - add_cl(p, bucket_alloc, header_brigade,
>>> - apr_off_t_toa(p, req->bytes_spooled));
>>> + if (bytes || req->old_te_val || req->old_cl_val) {
>>> + add_cl(p, bucket_alloc, header_brigade, apr_off_t_toa(p,
>>> bytes));
>>> }
>>> }
>>>
>>> @@ -2138,15 +2076,15 @@ static int proxy_http_handler(request_re
>>> * req->expecting_100 (i.e. cleared only if mod_proxy_http sent the
>>> * "100 Continue" according to its policy).
>>> */
>>> - req->do_100_continue = req->flushall = 1;
>>> + req->do_100_continue = req->prefetch_nonblocking = 1;
>>> req->expecting_100 = r->expecting_100;
>>> r->expecting_100 = 0;
>>> }
>>> /* Should we block while prefetching the body or try nonblocking and
>>> flush
>>> * data to the backend ASAP?
>>> */
>>> - else if (apr_table_get(r->subprocess_env, "proxy-flushall")) {
>>> - req->flushall = 1;
>>> + else if (apr_table_get(r->subprocess_env,
>>> "proxy-prefetch-nonblocking")) {
>>> + req->prefetch_nonblocking = 1;
>>> }
>>>
>>> /*
>>>
>>>
>>
