websocket: introduce blocking sends
—
$ git checkout -f 3e64569a9e1d7e8a1dd6d9a1637d1ec3f6c81ad9
Previous HEAD position was 902d9a1d4e wolfssl: fix CURLOPT_SSLVERSION
HEAD is now at 3e64569a9e websocket: introduce blocking sends
$ git clean -fdx
Removing Makefile
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$ autoreconf -fi
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
libtoolize: Remember to add 'LT_INIT' to configure.ac.
configure.ac:125: installing './compile'
configure.ac:437: installing './config.guess'
configure.ac:437: installing './config.sub'
configure.ac:125: installing './install-sh'
configure.ac:131: installing './missing'
docs/examples/Makefile.am: installing './depcomp'
$ bash -c find . -name config.guess -exec cp /usr/share/misc/config.guess {} \;
$ bash -c find . -name config.sub -exec cp /usr/share/misc/config.sub {} \;
$ chmod +x configure
$ ./configure --disable-shared --without-ssl --disable-docs
checking whether to enable maintainer-specific portions of Makefiles... no
checking whether make supports nested variables... yes
checking whether to enable debug build options... no
checking whether to enable compiler optimizer... (assumed) yes
checking whether to enable strict compiler warnings... no
checking whether to enable compiler warnings as errors... no
checking whether to enable curl debug memory tracking... no
checking whether to enable hiding of library internal symbols... yes
checking whether to enable c-ares for DNS lookups... no
checking whether to disable dependency on -lrt... (assumed no)
checking whether to enable HTTPSRR support... no
checking whether to enable ECH support... no
checking for path separator... :
checking for sed... /usr/bin/sed
checking for grep... /usr/bin/grep
checking that grep -E works... yes
checking for ar... /usr/bin/ar
checking for a BSD-compatible install... /usr/bin/install -c
checking for gcc... ccache gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether ccache gcc accepts -g... yes
checking for ccache gcc option to enable C11 features... none needed
checking whether ccache gcc understands -c and -o together... yes
checking how to run the C preprocessor... ccache gcc -E
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for stdatomic.h... yes
checking if _Atomic is available... yes
checking for a sed that does not truncate output... (cached) /usr/bin/sed
checking for code coverage support... no
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /usr/bin/mkdir -p
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checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
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checking compiler version... gcc '1100' (raw: '11')
checking if compiler is SunPro C... no
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checking whether build target is a native Windows one... no
checking if compiler accepts some basic options... yes
configure: compiler options added: -Werror-implicit-function-declaration
checking if compiler optimizer assumed setting might be used... yes
checking if compiler accepts optimizer enabling options... yes
configure: compiler options added: -O2
checking if compiler accepts strict warning options... yes
configure: compiler options added: -Wno-system-headers
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checking if compiler halts on negative sized arrays... yes
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checking for zlib.h... yes
configure: found both libz and libz.h header
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configure: IDN_LIBS: "-lidn2"
configure: IDN_LDFLAGS: ""
configure: IDN_CPPFLAGS: ""
configure: IDN_DIR: ""
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checking run-time libs availability... fine
checking size of size_t... 8
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checking whether fseeko is declared... yes
checking how to set a socket into non-blocking mode... fcntl O_NONBLOCK
checking whether to enable the threaded resolver... yes
checking whether to link macOS CoreFoundation, CoreServices, and SystemConfiguration frameworks... no
checking whether to use POSIX threads for threaded resolver... auto
checking for pthread.h... yes
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checking whether to enable SSPI support (Windows native builds only)... no
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checking whether to enable Unix domain sockets... auto
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checking whether to support headers-api... yes
configure: disables HSTS due to lack of SSL
checking whether to support WebSockets... no
checking whether hiding of library internal symbols will actually happen... yes
checking if this build supports HTTPS-proxy... no
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating docs/Makefile
config.status: creating docs/examples/Makefile
config.status: creating docs/libcurl/Makefile
config.status: creating docs/libcurl/opts/Makefile
config.status: creating docs/cmdline-opts/Makefile
config.status: creating include/Makefile
config.status: creating include/curl/Makefile
config.status: creating src/Makefile
config.status: creating lib/Makefile
config.status: creating scripts/Makefile
config.status: creating lib/libcurl.vers
config.status: creating tests/Makefile
config.status: creating tests/config
config.status: creating tests/certs/Makefile
config.status: creating tests/certs/scripts/Makefile
config.status: creating tests/data/Makefile
config.status: creating tests/server/Makefile
config.status: creating tests/libtest/Makefile
config.status: creating tests/unit/Makefile
config.status: creating tests/http/config.ini
config.status: creating tests/http/Makefile
config.status: creating tests/http/clients/Makefile
config.status: creating packages/Makefile
config.status: creating packages/vms/Makefile
config.status: creating curl-config
config.status: creating libcurl.pc
config.status: creating lib/curl_config.h
config.status: executing depfiles commands
config.status: executing libtool commands
configure: Configured to build curl/libcurl:
Host setup: x86_64-pc-linux-gnu
Install prefix: /usr/local
Compiler: ccache gcc
CFLAGS: -Werror-implicit-function-declaration -O2 -Wno-system-headers
CFLAGS extras:
CPPFLAGS:
LDFLAGS:
LIBS: -lpsl -lz
curl version: 8.10.0-DEV
SSL: no (--with-{openssl,gnutls,mbedtls,wolfssl,schannel,secure-transport,amissl,bearssl,rustls} )
SSH: no (--with-{libssh,libssh2})
zlib: enabled
brotli: no (--with-brotli)
zstd: no (--with-zstd)
GSS-API: no (--with-gssapi)
GSASL: no (libgsasl not found)
TLS-SRP: no (--enable-tls-srp)
resolver: POSIX threaded
IPv6: enabled
Unix sockets: enabled
IDN: no (--with-{libidn2,winidn})
Build docs: no
Build libcurl: Shared=no, Static=yes
Built-in manual: no (--enable-manual)
--libcurl option: enabled (--disable-libcurl-option)
Verbose errors: enabled (--disable-verbose)
Code coverage: disabled
SSPI: no (--enable-sspi)
ca cert bundle: no
ca cert path:
ca fallback:
LDAP: no (--enable-ldap / --with-ldap-lib / --with-lber-lib)
LDAPS: no (--enable-ldaps)
RTSP: enabled
RTMP: no (--with-librtmp)
PSL: enabled
Alt-svc: enabled (--disable-alt-svc)
Headers API: enabled (--disable-headers-api)
HSTS: no (--enable-hsts)
HTTP1: enabled (internal)
HTTP2: no (--with-nghttp2)
HTTP3: no (--with-ngtcp2 --with-nghttp3, --with-quiche, --with-openssl-quic, --with-msh3)
ECH: no (--enable-ech)
WebSockets: no (--enable-websockets)
Protocols: dict file ftp gopher http imap ipfs ipns mqtt pop3 rtsp smtp telnet tftp
Features: alt-svc AsynchDNS IPv6 Largefile libz PSL threadsafe UnixSockets
configure: WARNING: Cannot find libraries for LDAP support: LDAP disabled
configure: WARNING: libgsasl was not found
configure: WARNING: Cannot find libidn2
$ make -j3
Making all in lib
make[1]: Entering directory '/root/asi_db/builds/curl/_worktrees/w0/lib'
make all-am
make[2]: Entering directory '/root/asi_db/builds/curl/_worktrees/w0/lib'
CC libcurl_la-altsvc.lo
CC libcurl_la-amigaos.lo
CC libcurl_la-asyn-ares.lo
CC libcurl_la-asyn-thread.lo
CC libcurl_la-base64.lo
CC libcurl_la-bufq.lo
CC libcurl_la-bufref.lo
CC libcurl_la-c-hyper.lo
CC libcurl_la-cf-h1-proxy.lo
CC libcurl_la-cf-h2-proxy.lo
CC libcurl_la-cf-haproxy.lo
CC libcurl_la-cf-https-connect.lo
CC libcurl_la-cf-socket.lo
CC libcurl_la-cfilters.lo
CC libcurl_la-conncache.lo
CC libcurl_la-connect.lo
CC libcurl_la-content_encoding.lo
CC libcurl_la-cookie.lo
CC libcurl_la-curl_addrinfo.lo
CC libcurl_la-curl_des.lo
CC libcurl_la-curl_endian.lo
CC libcurl_la-curl_fnmatch.lo
CC libcurl_la-curl_get_line.lo
CC libcurl_la-curl_gethostname.lo
CC libcurl_la-curl_gssapi.lo
CC libcurl_la-curl_memrchr.lo
CC libcurl_la-curl_multibyte.lo
CC libcurl_la-curl_ntlm_core.lo
CC libcurl_la-curl_path.lo
CC libcurl_la-curl_range.lo
CC libcurl_la-curl_rtmp.lo
CC libcurl_la-curl_sasl.lo
CC libcurl_la-curl_sha512_256.lo
CC libcurl_la-curl_sspi.lo
CC libcurl_la-curl_threads.lo
CC libcurl_la-curl_trc.lo
CC libcurl_la-cw-out.lo
CC libcurl_la-dict.lo
CC libcurl_la-dllmain.lo
CC libcurl_la-doh.lo
CC libcurl_la-dynbuf.lo
CC libcurl_la-dynhds.lo
CC libcurl_la-easy.lo
CC libcurl_la-easygetopt.lo
CC libcurl_la-easyoptions.lo
CC libcurl_la-file.lo
CC libcurl_la-escape.lo
CC libcurl_la-fileinfo.lo
CC libcurl_la-fopen.lo
CC libcurl_la-formdata.lo
CC libcurl_la-ftp.lo
CC libcurl_la-ftplistparser.lo
CC libcurl_la-getenv.lo
CC libcurl_la-getinfo.lo
CC libcurl_la-gopher.lo
CC libcurl_la-hash.lo
CC libcurl_la-headers.lo
CC libcurl_la-hmac.lo
CC libcurl_la-hostasyn.lo
CC libcurl_la-hostip.lo
CC libcurl_la-hostip4.lo
CC libcurl_la-hostip6.lo
CC libcurl_la-hostsyn.lo
CC libcurl_la-hsts.lo
CC libcurl_la-http.lo
CC libcurl_la-http2.lo
CC libcurl_la-http1.lo
CC libcurl_la-http_aws_sigv4.lo
CC libcurl_la-http_chunks.lo
CC libcurl_la-http_digest.lo
CC libcurl_la-http_negotiate.lo
CC libcurl_la-http_ntlm.lo
CC libcurl_la-http_proxy.lo
CC libcurl_la-idn.lo
CC libcurl_la-if2ip.lo
CC libcurl_la-imap.lo
CC libcurl_la-inet_ntop.lo
CC libcurl_la-inet_pton.lo
CC libcurl_la-krb5.lo
CC libcurl_la-ldap.lo
CC libcurl_la-llist.lo
CC libcurl_la-macos.lo
CC libcurl_la-md4.lo
CC libcurl_la-md5.lo
CC libcurl_la-memdebug.lo
CC libcurl_la-mime.lo
CC libcurl_la-mprintf.lo
CC libcurl_la-mqtt.lo
CC libcurl_la-multi.lo
CC libcurl_la-netrc.lo
CC libcurl_la-nonblock.lo
CC libcurl_la-noproxy.lo
CC libcurl_la-openldap.lo
CC libcurl_la-parsedate.lo
CC libcurl_la-pingpong.lo
CC libcurl_la-pop3.lo
CC libcurl_la-progress.lo
CC libcurl_la-psl.lo
CC libcurl_la-rand.lo
CC libcurl_la-rename.lo
CC libcurl_la-request.lo
CC libcurl_la-rtsp.lo
CC libcurl_la-select.lo
CC libcurl_la-sendf.lo
CC libcurl_la-setopt.lo
CC libcurl_la-sha256.lo
CC libcurl_la-share.lo
CC libcurl_la-slist.lo
CC libcurl_la-smb.lo
CC libcurl_la-smtp.lo
CC libcurl_la-socks.lo
CC libcurl_la-socketpair.lo
CC libcurl_la-socks_gssapi.lo
CC libcurl_la-socks_sspi.lo
CC libcurl_la-speedcheck.lo
CC libcurl_la-splay.lo
CC libcurl_la-strcase.lo
CC libcurl_la-strdup.lo
CC libcurl_la-strerror.lo
CC libcurl_la-strtok.lo
CC libcurl_la-strtoofft.lo
CC libcurl_la-system_win32.lo
CC libcurl_la-telnet.lo
CC libcurl_la-tftp.lo
CC libcurl_la-timediff.lo
CC libcurl_la-timeval.lo
CC libcurl_la-transfer.lo
CC libcurl_la-url.lo
CC libcurl_la-urlapi.lo
CC libcurl_la-version.lo
CC libcurl_la-version_win32.lo
CC libcurl_la-warnless.lo
CC libcurl_la-ws.lo
CC vauth/libcurl_la-cleartext.lo
CC vauth/libcurl_la-cram.lo
CC vauth/libcurl_la-digest.lo
CC vauth/libcurl_la-digest_sspi.lo
CC vauth/libcurl_la-gsasl.lo
CC vauth/libcurl_la-krb5_gssapi.lo
CC vauth/libcurl_la-krb5_sspi.lo
CC vauth/libcurl_la-ntlm.lo
CC vauth/libcurl_la-ntlm_sspi.lo
CC vauth/libcurl_la-oauth2.lo
CC vauth/libcurl_la-spnego_gssapi.lo
CC vauth/libcurl_la-spnego_sspi.lo
CC vauth/libcurl_la-vauth.lo
CC vtls/libcurl_la-bearssl.lo
CC vtls/libcurl_la-cipher_suite.lo
CC vtls/libcurl_la-gtls.lo
CC vtls/libcurl_la-hostcheck.lo
CC vtls/libcurl_la-keylog.lo
CC vtls/libcurl_la-mbedtls.lo
CC vtls/libcurl_la-mbedtls_threadlock.lo
CC vtls/libcurl_la-openssl.lo
CC vtls/libcurl_la-rustls.lo
CC vtls/libcurl_la-schannel.lo
CC vtls/libcurl_la-schannel_verify.lo
CC vtls/libcurl_la-sectransp.lo
CC vtls/libcurl_la-vtls.lo
CC vtls/libcurl_la-wolfssl.lo
CC vtls/libcurl_la-x509asn1.lo
CC vquic/libcurl_la-curl_msh3.lo
CC vquic/libcurl_la-curl_ngtcp2.lo
CC vquic/libcurl_la-curl_osslq.lo
CC vquic/libcurl_la-curl_quiche.lo
CC vquic/libcurl_la-vquic.lo
CC vquic/libcurl_la-vquic-tls.lo
CC vssh/libcurl_la-libssh.lo
CC vssh/libcurl_la-libssh2.lo
CC vssh/libcurl_la-wolfssh.lo
CCLD libcurl.la
make[2]: Leaving directory '/root/asi_db/builds/curl/_worktrees/w0/lib'
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Making all in docs
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Making all in .
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Making all in src
make[1]: Entering directory '/root/asi_db/builds/curl/_worktrees/w0/src'
CC slist_wc.o
CC terminal.o
CC tool_binmode.o
CC tool_bname.o
CC tool_cb_dbg.o
CC tool_cb_hdr.o
CC tool_cb_prg.o
CC tool_cb_rea.o
CC tool_cb_see.o
CC tool_cb_soc.o
CC tool_cfgable.o
CC tool_cb_wrt.o
CC tool_dirhie.o
CC tool_doswin.o
CC tool_easysrc.o
CC tool_filetime.o
CC tool_findfile.o
CC tool_formparse.o
CC tool_getparam.o
CC tool_getpass.o
CC tool_help.o
CC tool_helpers.o
echo '#include "tool_hugehelp.h"' >> tool_hugehelp.c
CC tool_ipfs.o
CC tool_libinfo.o
CC tool_listhelp.o
CC tool_msgs.o
CC tool_main.o
CC tool_operate.o
CC tool_operhlp.o
CC tool_paramhlp.o
CC tool_parsecfg.o
CC tool_progress.o
CC tool_setopt.o
CC tool_sleep.o
CC tool_stderr.o
CC tool_strdup.o
CC tool_urlglob.o
CC tool_util.o
CC tool_vms.o
CC tool_writeout.o
CC tool_writeout_json.o
CC tool_xattr.o
echo 'extern const void *curl_ca_embed; const void *curl_ca_embed;' > tool_ca_embed.c
CC var.o
CC tool_hugehelp.o
CC tool_ca_embed.o
CC ../lib/base64.o
CC ../lib/curl_multibyte.o
CC ../lib/dynbuf.o
CC ../lib/nonblock.o
CC ../lib/strtoofft.o
CC ../lib/timediff.o
CC ../lib/version_win32.o
CC ../lib/warnless.o
CCLD curl
make[1]: Leaving directory '/root/asi_db/builds/curl/_worktrees/w0/src'
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| @@ -479,6 +479,8 @@ | |
| - curl_multi_remove_handle for any of the above. See section 2.3. | |
| + | - Calling curl_ws_send() from a callback |
| + | |
| 2.2 Better support for same name resolves | |
| If a name resolve has been initiated for name NN and a second easy handle | |
| @@ -109,6 +109,10 @@ Traces reading of upload data from the application in order to send it to the se | |
| Traces writing of download data, received from the server, to the application. | |
| + | ## `ws` |
| + | |
| + | Tracing of WebSocket operations when this protocol is enabled in your build. |
| + | |
| # TRACE GROUPS | |
| Besides the specific component names there are the following group names | |
| @@ -53,6 +53,10 @@ If **CURLWS_RAW_MODE** is enabled in CURLOPT_WS_OPTIONS(3), the | |
| To send a message consisting of multiple frames, set the *CURLWS_CONT* bit | |
| in all frames except the final one. | |
| + | Warning: while it is possible to invoke this function from a callback, |
| + | such a call is blocking in this situation, e.g. only returns after all data |
| + | has been sent or an error is encountered. |
| + | |
| # FLAGS | |
| ## CURLWS_TEXT | |
| @@ -91,6 +91,23 @@ static size_t chunk_read(struct buf_chunk *chunk, | |
| } | |
| } | |
| + | static size_t chunk_unwrite(struct buf_chunk *chunk, size_t len) |
| + | { |
| + | size_t n = chunk->w_offset - chunk->r_offset; |
| + | DEBUGASSERT(chunk->w_offset >= chunk->r_offset); |
| + | if(!n) { |
| + | return 0; |
| + | } |
| + | else if(n <= len) { |
| + | chunk->r_offset = chunk->w_offset = 0; |
| + | return n; |
| + | } |
| + | else { |
| + | chunk->w_offset -= len; |
| + | return len; |
| + | } |
| + | } |
| + | |
| static ssize_t chunk_slurpn(struct buf_chunk *chunk, size_t max_len, | |
| Curl_bufq_reader *reader, | |
| void *reader_ctx, CURLcode *err) | |
| @@ -363,6 +380,49 @@ static void prune_head(struct bufq *q) | |
| } | |
| } | |
| + | static struct buf_chunk *chunk_prev(struct buf_chunk *head, |
| + | struct buf_chunk *chunk) |
| + | { |
| + | while(head) { |
| + | if(head == chunk) |
| + | return NULL; |
| + | if(head->next == chunk) |
| + | return head; |
| + | head = head->next; |
| + | } |
| + | return NULL; |
| + | } |
| + | |
| + | static void prune_tail(struct bufq *q) |
| + | { |
| + | struct buf_chunk *chunk; |
| + | |
| + | while(q->tail && chunk_is_empty(q->tail)) { |
| + | chunk = q->tail; |
| + | q->tail = chunk_prev(q->head, chunk); |
| + | if(q->tail) |
| + | q->tail->next = NULL; |
| + | if(q->head == chunk) |
| + | q->head = q->tail; |
| + | if(q->pool) { |
| + | bufcp_put(q->pool, chunk); |
| + | --q->chunk_count; |
| + | } |
| + | else if((q->chunk_count > q->max_chunks) || |
| + | (q->opts & BUFQ_OPT_NO_SPARES)) { |
| + | /* SOFT_LIMIT allowed us more than max. free spares until |
| + | * we are at max again. Or free them if we are configured |
| + | * to not use spares. */ |
| + | free(chunk); |
| + | --q->chunk_count; |
| + | } |
| + | else { |
| + | chunk->next = q->spare; |
| + | q->spare = chunk; |
| + | } |
| + | } |
| + | } |
| + | |
| static struct buf_chunk *get_non_full_tail(struct bufq *q) | |
| { | |
| struct buf_chunk *chunk; | |
| @@ -428,6 +488,15 @@ CURLcode Curl_bufq_cwrite(struct bufq *q, | |
| return result; | |
| } | |
| + | CURLcode Curl_bufq_unwrite(struct bufq *q, size_t len) |
| + | { |
| + | while(len && q->tail) { |
| + | len -= chunk_unwrite(q->head, len); |
| + | prune_tail(q); |
| + | } |
| + | return len? CURLE_AGAIN : CURLE_OK; |
| + | } |
| + | |
| ssize_t Curl_bufq_read(struct bufq *q, unsigned char *buf, size_t len, | |
| CURLcode *err) | |
| { | |
| @@ -182,6 +182,12 @@ CURLcode Curl_bufq_cwrite(struct bufq *q, | |
| const char *buf, size_t len, | |
| size_t *pnwritten); | |
| + | /** |
| + | * Remove `len` bytes from the end of the buffer queue again. |
| + | * Returns CURLE_AGAIN if less than `len` bytes were in the queue. |
| + | */ |
| + | CURLcode Curl_bufq_unwrite(struct bufq *q, size_t len); |
| + | |
| /** | |
| * Read buf from the start of the buffer queue. The buf is copied | |
| * and the amount of copied bytes is returned. | |
| @@ -221,6 +221,24 @@ void Curl_trc_ftp(struct Curl_easy *data, const char *fmt, ...) | |
| } | |
| #endif /* !CURL_DISABLE_FTP */ | |
| + | #if defined(USE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP) |
| + | struct curl_trc_feat Curl_trc_feat_ws = { |
| + | "WS", |
| + | CURL_LOG_LVL_NONE, |
| + | }; |
| + | |
| + | void Curl_trc_ws(struct Curl_easy *data, const char *fmt, ...) |
| + | { |
| + | DEBUGASSERT(!strchr(fmt, '\n')); |
| + | if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ws)) { |
| + | va_list ap; |
| + | va_start(ap, fmt); |
| + | trc_infof(data, &Curl_trc_feat_ws, fmt, ap); |
| + | va_end(ap); |
| + | } |
| + | } |
| + | #endif /* USE_WEBSOCKETS && !CURL_DISABLE_HTTP */ |
| + | |
| #define TRC_CT_NONE (0) | |
| #define TRC_CT_PROTOCOL (1<<(0)) | |
| #define TRC_CT_NETWORK (1<<(1)) | |
| @@ -240,6 +258,9 @@ static struct trc_feat_def trc_feats[] = { | |
| #ifndef CURL_DISABLE_DOH | |
| { &Curl_doh_trc, TRC_CT_NETWORK }, | |
| #endif | |
| + | #if defined(USE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP) |
| + | { &Curl_trc_feat_ws, TRC_CT_PROTOCOL }, |
| + | #endif |
| }; | |
| struct trc_cft_def { | |
| @@ -89,6 +89,11 @@ void Curl_failf(struct Curl_easy *data, | |
| do { if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ftp)) \ | |
| Curl_trc_ftp(data, __VA_ARGS__); } while(0) | |
| #endif /* !CURL_DISABLE_FTP */ | |
| + | #if defined(USE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP) |
| + | #define CURL_TRC_WS(data, ...) \ |
| + | do { if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ws)) \ |
| + | Curl_trc_ws(data, __VA_ARGS__); } while(0) |
| + | #endif /* USE_WEBSOCKETS && !CURL_DISABLE_HTTP */ |
| #else /* CURL_HAVE_C99 */ | |
| @@ -100,6 +105,9 @@ void Curl_failf(struct Curl_easy *data, | |
| #ifndef CURL_DISABLE_FTP | |
| #define CURL_TRC_FTP Curl_trc_ftp | |
| #endif | |
| + | #if defined(USE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP) |
| + | #define CURL_TRC_WS Curl_trc_ws |
| + | #endif |
| #endif /* !CURL_HAVE_C99 */ | |
| @@ -148,6 +156,11 @@ extern struct curl_trc_feat Curl_trc_feat_ftp; | |
| void Curl_trc_ftp(struct Curl_easy *data, | |
| const char *fmt, ...) CURL_PRINTF(2, 3); | |
| #endif | |
| + | #if defined(USE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP) |
| + | extern struct curl_trc_feat Curl_trc_feat_ws; |
| + | void Curl_trc_ws(struct Curl_easy *data, |
| + | const char *fmt, ...) CURL_PRINTF(2, 3); |
| + | #endif |
| #else /* defined(CURL_DISABLE_VERBOSE_STRINGS) */ | |
| @@ -37,6 +37,7 @@ | |
| #include "ws.h" | |
| #include "easyif.h" | |
| #include "transfer.h" | |
| + | #include "select.h" |
| #include "nonblock.h" | |
| /* The last 3 #include files should be in this order */ | |
| @@ -136,6 +137,9 @@ static void ws_dec_info(struct ws_decoder *dec, struct Curl_easy *data, | |
| } | |
| } | |
| + | static CURLcode ws_send_raw_blocking(CURL *data, struct websocket *ws, |
| + | const char *buffer, size_t buflen); |
| + | |
| typedef ssize_t ws_write_payload(const unsigned char *buf, size_t buflen, | |
| int frame_age, int frame_flags, | |
| curl_off_t payload_offset, | |
| @@ -773,7 +777,7 @@ CURLcode Curl_ws_accept(struct Curl_easy *data, | |
| } | |
| } | |
| #endif | |
| - | DEBUGF(infof(data, "WS, using chunk size %zu", chunk_size)); |
| + | CURL_TRC_WS(data, "WS, using chunk size %zu", chunk_size); |
| Curl_bufq_init2(&ws->recvbuf, chunk_size, WS_CHUNK_COUNT, | |
| BUFQ_OPT_SOFT_LIMIT); | |
| Curl_bufq_init2(&ws->sendbuf, chunk_size, WS_CHUNK_COUNT, | |
| @@ -970,8 +974,8 @@ CURL_EXTERN CURLcode curl_ws_recv(struct Curl_easy *data, void *buffer, | |
| infof(data, "connection expectedly closed?"); | |
| return CURLE_GOT_NOTHING; | |
| } | |
| - | DEBUGF(infof(data, "curl_ws_recv, added %zu bytes from network", |
| - | Curl_bufq_len(&ws->recvbuf))); |
| + | CURL_TRC_WS(data, "curl_ws_recv, added %zu bytes from network", |
| + | Curl_bufq_len(&ws->recvbuf)); |
| } | |
| result = ws_dec_pass(&ws->dec, data, &ws->recvbuf, | |
| @@ -1001,14 +1005,14 @@ CURL_EXTERN CURLcode curl_ws_recv(struct Curl_easy *data, void *buffer, | |
| ctx.payload_len, ctx.bufidx); | |
| *metap = &ws->frame; | |
| *nread = ws->frame.len; | |
| - | /* infof(data, "curl_ws_recv(len=%zu) -> %zu bytes (frame at %" |
| - | CURL_FORMAT_CURL_OFF_T ", %" CURL_FORMAT_CURL_OFF_T " left)", |
| - | buflen, *nread, ws->frame.offset, ws->frame.bytesleft); */ |
| + | CURL_TRC_WS(data, "curl_ws_recv(len=%zu) -> %zu bytes (frame at %" |
| + | CURL_FORMAT_CURL_OFF_T ", %" CURL_FORMAT_CURL_OFF_T " left)", |
| + | buflen, *nread, ws->frame.offset, ws->frame.bytesleft); |
| return CURLE_OK; | |
| } | |
| static CURLcode ws_flush(struct Curl_easy *data, struct websocket *ws, | |
| - | bool complete) |
| + | bool blocking) |
| { | |
| if(!Curl_bufq_is_empty(&ws->sendbuf)) { | |
| CURLcode result; | |
| @@ -1016,7 +1020,11 @@ static CURLcode ws_flush(struct Curl_easy *data, struct websocket *ws, | |
| size_t outlen, n; | |
| while(Curl_bufq_peek(&ws->sendbuf, &out, &outlen)) { | |
| - | if(data->set.connect_only) |
| + | if(blocking) { |
| + | result = ws_send_raw_blocking(data, ws, (char *)out, outlen); |
| + | n = result? 0 : outlen; |
| + | } |
| + | else if(data->set.connect_only || Curl_is_in_callback(data)) |
| result = Curl_senddata(data, out, outlen, &n); | |
| else { | |
| result = Curl_xfer_send(data, out, outlen, FALSE, &n); | |
| @@ -1024,22 +1032,14 @@ static CURLcode ws_flush(struct Curl_easy *data, struct websocket *ws, | |
| result = CURLE_AGAIN; | |
| } | |
| - | if(result) { |
| - | if(result == CURLE_AGAIN) { |
| - | if(!complete) { |
| - | infof(data, "WS: flush EAGAIN, %zu bytes remain in buffer", |
| - | Curl_bufq_len(&ws->sendbuf)); |
| - | return result; |
| - | } |
| - | /* TODO: the current design does not allow for buffered writes. |
| - | * We need to flush the buffer now. There is no ws_flush() later */ |
| - | n = 0; |
| - | continue; |
| - | } |
| - | else if(result) { |
| - | failf(data, "WS: flush, write error %d", result); |
| - | return result; |
| - | } |
| + | if(result == CURLE_AGAIN) { |
| + | CURL_TRC_WS(data, "flush EAGAIN, %zu bytes remain in buffer", |
| + | Curl_bufq_len(&ws->sendbuf)); |
| + | return result; |
| + | } |
| + | else if(result) { |
| + | failf(data, "WS: flush, write error %d", result); |
| + | return result; |
| } | |
| else { | |
| infof(data, "WS: flushed %zu bytes", n); | |
| @@ -1050,6 +1050,83 @@ static CURLcode ws_flush(struct Curl_easy *data, struct websocket *ws, | |
| return CURLE_OK; | |
| } | |
| + | static CURLcode ws_send_raw_blocking(CURL *data, struct websocket *ws, |
| + | const char *buffer, size_t buflen) |
| + | { |
| + | CURLcode result = CURLE_OK; |
| + | size_t nwritten; |
| + | |
| + | (void)ws; |
| + | while(buflen) { |
| + | result = Curl_xfer_send(data, buffer, buflen, FALSE, &nwritten); |
| + | if(result) |
| + | return result; |
| + | DEBUGASSERT(nwritten <= buflen); |
| + | buffer += nwritten; |
| + | buflen -= nwritten; |
| + | if(buflen) { |
| + | curl_socket_t sock = data->conn->sock[FIRSTSOCKET]; |
| + | timediff_t left_ms; |
| + | int ev; |
| + | |
| + | CURL_TRC_WS(data, "ws_send_raw_blocking() partial, %zu left to send", |
| + | buflen); |
| + | left_ms = Curl_timeleft(data, NULL, FALSE); |
| + | if(left_ms < 0) { |
| + | failf(data, "Timeout waiting for socket becoming writable"); |
| + | return CURLE_SEND_ERROR; |
| + | } |
| + | |
| + | /* POLLOUT socket */ |
| + | if(sock == CURL_SOCKET_BAD) |
| + | return CURLE_SEND_ERROR; |
| + | ev = Curl_socket_check(CURL_SOCKET_BAD, CURL_SOCKET_BAD, sock, |
| + | left_ms? left_ms : 500); |
| + | if(ev < 0) { |
| + | failf(data, "Error while waiting for socket becoming writable"); |
| + | return CURLE_SEND_ERROR; |
| + | } |
| + | } |
| + | } |
| + | return result; |
| + | } |
| + | |
| + | static CURLcode ws_send_raw(CURL *data, const void *buffer, |
| + | size_t buflen, size_t *pnwritten) |
| + | { |
| + | struct websocket *ws = data->conn->proto.ws; |
| + | CURLcode result; |
| + | |
| + | if(!ws) { |
| + | failf(data, "Not a websocket transfer"); |
| + | return CURLE_SEND_ERROR; |
| + | } |
| + | if(!buflen) |
| + | return CURLE_OK; |
| + | |
| + | if(Curl_is_in_callback(data)) { |
| + | /* When invoked from inside callbacks, we do a blocking send as the |
| + | * callback will probably not implement partial writes that may then |
| + | * mess up the ws framing subsequently. |
| + | * We need any pending data to be flushed before sending. */ |
| + | result = ws_flush(data, ws, TRUE); |
| + | if(result) |
| + | return result; |
| + | result = ws_send_raw_blocking(data, ws, buffer, buflen); |
| + | } |
| + | else { |
| + | /* We need any pending data to be sent or EAGAIN this call. */ |
| + | result = ws_flush(data, ws, FALSE); |
| + | if(result) |
| + | return result; |
| + | result = Curl_senddata(data, buffer, buflen, pnwritten); |
| + | } |
| + | |
| + | CURL_TRC_WS(data, "ws_send_raw(len=%zu) -> %d, %zu", |
| + | buflen, result, *pnwritten); |
| + | return result; |
| + | } |
| + | |
| CURL_EXTERN CURLcode curl_ws_send(CURL *data, const void *buffer, | |
| size_t buflen, size_t *sent, | |
| curl_off_t fragsize, | |
| @@ -1057,60 +1134,53 @@ CURL_EXTERN CURLcode curl_ws_send(CURL *data, const void *buffer, | |
| { | |
| struct websocket *ws; | |
| ssize_t n; | |
| - | size_t nwritten, space; |
| + | size_t space, payload_added; |
| CURLcode result; | |
| + | CURL_TRC_WS(data, "curl_ws_send(len=%zu, fragsize=%" CURL_FORMAT_CURL_OFF_T |
| + | ", flags=%x), raw=%d", |
| + | buflen, fragsize, flags, data->set.ws_raw_mode); |
| *sent = 0; | |
| if(!data->conn && data->set.connect_only) { | |
| result = Curl_connect_only_attach(data); | |
| if(result) | |
| - | return result; |
| + | goto out; |
| } | |
| if(!data->conn) { | |
| failf(data, "No associated connection"); | |
| - | return CURLE_SEND_ERROR; |
| + | result = CURLE_SEND_ERROR; |
| + | goto out; |
| } | |
| if(!data->conn->proto.ws) { | |
| failf(data, "Not a websocket transfer"); | |
| - | return CURLE_SEND_ERROR; |
| + | result = CURLE_SEND_ERROR; |
| + | goto out; |
| } | |
| ws = data->conn->proto.ws; | |
| + | /* try flushing any content still waiting to be sent. */ |
| + | result = ws_flush(data, ws, FALSE); |
| + | if(result) |
| + | goto out; |
| + | |
| if(data->set.ws_raw_mode) { | |
| + | /* In raw mode, we write directly to the connection */ |
| if(fragsize || flags) { | |
| - | DEBUGF(infof(data, "ws_send: " |
| - | "fragsize and flags cannot be non-zero in raw mode")); |
| + | failf(data, "ws_send, raw mode: fragsize and flags cannot be non-zero"); |
| return CURLE_BAD_FUNCTION_ARGUMENT; | |
| } | |
| - | if(!buflen) |
| - | /* nothing to do */ |
| - | return CURLE_OK; |
| - | /* raw mode sends exactly what was requested, and this is from within |
| - | the write callback */ |
| - | if(Curl_is_in_callback(data)) { |
| - | result = Curl_xfer_send(data, buffer, buflen, FALSE, &nwritten); |
| - | } |
| - | else |
| - | result = Curl_senddata(data, buffer, buflen, &nwritten); |
| - | |
| - | infof(data, "WS: wanted to send %zu bytes, sent %zu bytes", |
| - | buflen, nwritten); |
| - | *sent = nwritten; |
| - | return result; |
| + | result = ws_send_raw(data, buffer, buflen, sent); |
| + | goto out; |
| } | |
| /* Not RAW mode, buf we do the frame encoding */ | |
| - | result = ws_flush(data, ws, FALSE); |
| - | if(result) |
| - | return result; |
| - | |
| - | /* TODO: the current design does not allow partial writes, afaict. |
| - | * It is not clear how the application is supposed to react. */ |
| space = Curl_bufq_space(&ws->sendbuf); | |
| - | DEBUGF(infof(data, "curl_ws_send(len=%zu), sendbuf len=%zu space %zu", |
| - | buflen, Curl_bufq_len(&ws->sendbuf), space)); |
| - | if(space < 14) |
| - | return CURLE_AGAIN; |
| + | CURL_TRC_WS(data, "curl_ws_send(len=%zu), sendbuf=%zu space_left=%zu", |
| + | buflen, Curl_bufq_len(&ws->sendbuf), space); |
| + | if(space < 14) { |
| + | result = CURLE_AGAIN; |
| + | goto out; |
| + | } |
| if(flags & CURLWS_OFFSET) { | |
| if(fragsize) { | |
| @@ -1118,7 +1188,7 @@ CURL_EXTERN CURLcode curl_ws_send(CURL *data, const void *buffer, | |
| n = ws_enc_write_head(data, &ws->enc, flags, fragsize, | |
| &ws->sendbuf, &result); | |
| if(n < 0) | |
| - | return result; |
| + | goto out; |
| } | |
| else { | |
| if((curl_off_t)buflen > ws->enc.payload_remain) { | |
| @@ -1132,16 +1202,66 @@ CURL_EXTERN CURLcode curl_ws_send(CURL *data, const void *buffer, | |
| n = ws_enc_write_head(data, &ws->enc, flags, (curl_off_t)buflen, | |
| &ws->sendbuf, &result); | |
| if(n < 0) | |
| - | return result; |
| + | goto out; |
| } | |
| n = ws_enc_write_payload(&ws->enc, data, | |
| buffer, buflen, &ws->sendbuf, &result); | |
| if(n < 0) | |
| - | return result; |
| + | goto out; |
| + | payload_added = (size_t)n; |
| + | |
| + | while(!result && (buflen || !Curl_bufq_is_empty(&ws->sendbuf))) { |
| + | /* flush, blocking when in callback */ |
| + | result = ws_flush(data, ws, Curl_is_in_callback(data)); |
| + | if(!result) { |
| + | DEBUGASSERT(payload_added <= buflen); |
| + | /* all buffered data sent. Try sending the rest if there is any. */ |
| + | *sent += payload_added; |
| + | buffer = (const char *)buffer + payload_added; |
| + | buflen -= payload_added; |
| + | payload_added = 0; |
| + | if(buflen) { |
| + | n = ws_enc_write_payload(&ws->enc, data, |
| + | buffer, buflen, &ws->sendbuf, &result); |
| + | if(n < 0) |
| + | goto out; |
| + | payload_added = Curl_bufq_len(&ws->sendbuf); |
| + | } |
| + | } |
| + | else if(result == CURLE_AGAIN) { |
| + | /* partially sent. how much of the call data has been part of it? what |
| + | * should we report to out caller so it can retry/send the rest? */ |
| + | if(payload_added < buflen) { |
| + | /* We did not add everything the caller wanted. Return just |
| + | * the partial write to our buffer. */ |
| + | *sent = payload_added; |
| + | result = CURLE_OK; |
| + | goto out; |
| + | } |
| + | else if(!buflen) { |
| + | /* We have no payload to report a partial write. EAGAIN would make |
| + | * the caller repeat this and add the frame again. |
| + | * Flush blocking seems the only way out of this. */ |
| + | *sent = (size_t)n; |
| + | result = ws_flush(data, ws, TRUE); |
| + | goto out; |
| + | } |
| + | /* We added the complete data to our sendbuf. Report one byte less as |
| + | * sent. This parital success should make the caller invoke us again |
| + | * with the last byte. */ |
| + | *sent = payload_added - 1; |
| + | result = Curl_bufq_unwrite(&ws->sendbuf, 1); |
| + | if(!result) |
| + | result = CURLE_AGAIN; |
| + | } |
| + | } |
| - | *sent = (size_t)n; |
| - | return ws_flush(data, ws, TRUE); |
| + | out: |
| + | CURL_TRC_WS(data, "curl_ws_send(len=%zu, fragsize=%" CURL_FORMAT_CURL_OFF_T |
| + | ", flags=%x, raw=%d) -> %d, %zu", |
| + | buflen, fragsize, flags, data->set.ws_raw_mode, result, *sent); |
| + | return result; |
| } | |
| static void ws_free(struct connectdata *conn) | |