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Code Issues Releases Wiki Activity

ircd::http: Update HTTP send-sides to write to stream_buffer.

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This commit is contained in:
Jason Volk 2017-12-22 17:40:44 -07:00
parent 8178d96f64
commit 51ebd9c346
5 changed files with 251 additions and 179 deletions
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30
include/ircd/http.h
View file

@ -254,20 +254,23 @@ struct ircd::http::request
struct head;
struct content;
using write_closure = std::function<void (const ilist<const_buffer> &)>;
using proffer = std::function<void (const head &)>;
using header = line::header;
request(const string_view &host = {},
// send
request(stream_buffer &,
const string_view &host,
const string_view &method = "GET",
const string_view &path = "/",
const string_view &query = {},
const string_view &content = {},
const write_closure & = nullptr,
const vector_view<const header> & = {});
const size_t &content_length = 0,
const string_view &content_type = {},
const vector_view<const header> & = {},
const bool &termination = true);
// recv
request(parse::capstan &,
content *const & = nullptr,
content *const &,
const proffer & = nullptr,
const headers::closure & = {});
};
@ -315,13 +318,18 @@ struct ircd::http::response
using proffer = std::function<void (const head &)>;
using header = line::header;
response(const code &,
const string_view &content,
const write_closure &,
const vector_view<const header> & = {});
// send
response(stream_buffer &,
const code & = code::OK,
const size_t &content_length = 0,
const string_view &content_type = {},
const string_view &cache_control = {},
const vector_view<const header> & = {},
const bool &termination = true);
// recv
response(parse::capstan &,
content *const & = nullptr,
content *const &,
const proffer & = nullptr,
const headers::closure & = {});

2
include/ircd/resource.h
View file

@ -128,7 +128,7 @@ struct ircd::resource::request::object
struct ircd::resource::response
{
response(client &, const string_view &str, const string_view &ct = "text/plain; charset=utf8", const http::code & = http::OK);
response(client &, const string_view &str, const string_view &content_type, const http::code & = http::OK);
response(client &, const json::object &str, const http::code & = http::OK);
response(client &, const json::array &str, const http::code & = http::OK);
response(client &, const json::members & = {}, const http::code & = http::OK);

315
ircd/http.cc
View file

@ -48,20 +48,25 @@ namespace ircd::http
template<class it, class top = unused_type> struct grammar;
struct parser extern const parser;
size_t printed_size(const vector_view<const line::header> &headers);
size_t print(char *const &buf, const size_t &max, const vector_view<const line::header> &headers);
extern const std::unordered_map<ircd::http::code, ircd::string_view> reason;
size_t serialized(const vector_view<const line::header> &headers);
void writeline(stream_buffer &, const stream_buffer::closure &);
void writeline(stream_buffer &);
}
BOOST_FUSION_ADAPT_STRUCT
(
ircd::http::line::request,
( decltype(ircd::http::line::request::method), method )
( decltype(ircd::http::line::request::path), path )
( decltype(ircd::http::line::request::query), query )
( decltype(ircd::http::line::request::fragment), fragment )
( decltype(ircd::http::line::request::version), version )
ircd::http::query,
( decltype(ircd::http::query::first), first )
( decltype(ircd::http::query::second), second )
)
BOOST_FUSION_ADAPT_STRUCT
(
ircd::http::line::header,
( decltype(ircd::http::line::header::first), first )
( decltype(ircd::http::line::header::second), second )
)
BOOST_FUSION_ADAPT_STRUCT
@ -74,16 +79,12 @@ BOOST_FUSION_ADAPT_STRUCT
BOOST_FUSION_ADAPT_STRUCT
(
ircd::http::line::header,
( decltype(ircd::http::line::header::first), first )
( decltype(ircd::http::line::header::second), second )
)
BOOST_FUSION_ADAPT_STRUCT
(
ircd::http::query,
( decltype(ircd::http::query::first), first )
( decltype(ircd::http::query::second), second )
ircd::http::line::request,
( decltype(ircd::http::line::request::method), method )
( decltype(ircd::http::line::request::path), path )
( decltype(ircd::http::line::request::query), query )
( decltype(ircd::http::line::request::fragment), fragment )
( decltype(ircd::http::line::request::version), version )
)
const decltype(ircd::http::reason) ircd::http::reason
@ -236,35 +237,6 @@ struct ircd::http::parser
}
const ircd::http::parser;
size_t
ircd::http::print(char *const &buf,
const size_t &max,
const vector_view<const line::header> &headers)
{
size_t ret(0);
for(auto it(std::begin(headers)); it != std::end(headers); ++it)
{
ret += fmt::snprintf(buf + ret, max - ret, "%s: %s",
it->first,
it->second);
ret += snprintf(buf + ret, max - ret, "\r\n");
}
return ret;
}
size_t
ircd::http::printed_size(const vector_view<const line::header> &headers)
{
return std::accumulate(std::begin(headers), std::end(headers), size_t(1), []
(auto &ret, const auto &pair)
{
// key : SP value CRLF
return ret += pair.first.size() + 1 + 1 + pair.second.size() + 2;
});
}
ircd::http::request::request(parse::capstan &pc,
content *const &c,
const proffer &proffer,
@ -286,64 +258,77 @@ ircd::http::request::request(parse::capstan &pc,
*c = content{pc, h};
}
ircd::http::request::request(const string_view &host,
/// Compose a request. This prints an HTTP head into the buffer. No real IO is
/// done here. After composing into the buffer, the user can then drive the
/// socket by sending the header and the content as specified.
///
/// If termination is false, no extra CRLF is printed to the buffer allowing
/// additional headers not specified to be appended later.
ircd::http::request::request(stream_buffer &out,
const string_view &host,
const string_view &method,
const string_view &path,
const string_view &query,
const string_view &content,
const write_closure &closure,
const vector_view<const header> &headers)
const size_t &content_length,
const string_view &content_type,
const vector_view<const header> &headers,
const bool &termination)
{
writeline(out, [&method, &path, &query](const mutable_buffer &out) -> size_t
{
assert(!method.empty());
assert(!path.empty());
static const auto &version
assert(!method.empty());
return fmt::sprintf
{
"HTTP/1.1"
};
char request_line[2048]; const auto request_line_len
{
snprintf(request_line, sizeof(request_line), "%s /%s%s%s %s\r\n",
method.c_str(),
path.c_str(),
out, "%s /%s%s%s HTTP/1.1",
method,
path,
query.empty()? "" : "?",
query.empty()? "" : query.c_str(),
version)
query.empty()? "" : query
};
});
char host_line[128] {"Host: "}; const auto host_line_len
writeline(out, [&host](const mutable_buffer &out) -> size_t
{
6 + snprintf(host_line + 6, std::min(sizeof(host_line) - 6, host.size() + 3), "%s\r\n",
host.c_str())
};
char content_len[64]; const auto content_len_len
assert(!host.empty());
return fmt::sprintf
{
snprintf(content_len, sizeof(content_len), "Content-Length: %zu\r\n",
content.size())
out, "Host: %s", host
};
});
char user_headers[printed_size(headers) + 2]; auto user_headers_len
if(content_length)
writeline(out, [&content_type](const mutable_buffer &out) -> size_t
{
print(user_headers, sizeof(user_headers), headers)
};
assert(user_headers_len + 3 == sizeof(user_headers));
user_headers[user_headers_len++] = '\r';
user_headers[user_headers_len++] = '\n';
//user_headers[user_headers_len++] = '\0';
const ilist<const_buffer> vector
return fmt::sprintf
{
{ request_line, size_t(request_line_len) },
{ host_line, size_t(host_line_len) },
{ content_len, size_t(content_len_len) },
{ user_headers, size_t(user_headers_len) },
{ content.data(), content.size() },
out, "Content-Type: %s", content_type?: "text/plain; charset=utf-8"
};
});
closure(vector);
writeline(out, [&content_length](const mutable_buffer &out) -> size_t
{
return fmt::sprintf
{
out, "Content-Length: %zu", content_length
};
});
for(const auto &header : headers)
{
assert(!header.first.empty());
assert(!header.second.empty());
writeline(out, [&header](const mutable_buffer &out) -> size_t
{
return fmt::sprintf
{
out, "%s: %s", header.first, header.second
};
});
}
if(termination)
writeline(out);
}
ircd::http::request::head::head(parse::capstan &pc,
@ -394,84 +379,92 @@ ircd::http::response::response(parse::capstan &pc,
*c = content{pc, h};
}
ircd::http::response::response(const code &code,
const string_view &content,
const write_closure &closure,
const vector_view<const header> &headers)
ircd::http::response::response(stream_buffer &out,
const code &code,
const size_t &content_length,
const string_view &content_type,
const string_view &cache_control,
const vector_view<const header> &headers,
const bool &termination)
{
char status_line[128]; const auto status_line_len
writeline(out, [&code](const mutable_buffer &out) -> size_t
{
snprintf(status_line, sizeof(status_line), "HTTP/1.1 %u %s\r\n",
uint(code),
status(code).data())
return fmt::sprintf
{
out, "HTTP/1.1 %u %s", uint(code), status(code)
};
});
char server_line[128]; const auto server_line_len
if(code >= 200 && code < 300)
writeline(out, [&code](const mutable_buffer &out) -> size_t
{
code >= 200 && code < 300?
snprintf(server_line, sizeof(server_line), "Server: %s (IRCd %s)\r\n",
BRANDING_NAME,
BRANDING_VERSION):
0
return fmt::sprintf
{
out, "Server: %s (IRCd %s)", BRANDING_NAME, BRANDING_VERSION
};
});
char date_line[128], date_buf[96]; const auto date_line_len
if(code < 400)
writeline(out, [](const mutable_buffer &out) -> size_t
{
code < 400?
snprintf(data(date_line), size(date_line), "Date: %s\r\n",
timef(date_buf, ircd::localtime).c_str()):
0
char date_buf[96];
return fmt::sprintf
{
out, "Date: %s", timef(date_buf, ircd::localtime)
};
});
char cache_line[64]; const auto cache_line_len
if((code >= 200 && code < 300) || (code >= 403 && code <= 405) || (code >= 300 && code < 400))
writeline(out, [&cache_control](const mutable_buffer &out) -> size_t
{
//TODO: real cache control subsystem
(code >= 200 && code < 300) || (code >= 403 && code <= 405) || (code >= 300 && code < 400)?
snprintf(cache_line, sizeof(cache_line), "Cache-Control: %s\r\n",
"no-cache"):
0
return fmt::sprintf
{
out, "Cache-Control: %s", cache_control?: "no-cache"
};
});
const bool has_transfer_encoding
{
std::any_of(std::begin(headers), std::end(headers), []
(const auto &header)
{
return header == "Transfer-Encoding";
return iequals(header.first, "transfer-encoding"s);
})
};
char content_len[64]; const auto content_len_len
if((content_length && code != NO_CONTENT) || has_transfer_encoding)
writeline(out, [&content_type](const mutable_buffer &out) -> size_t
{
code != NO_CONTENT && !has_transfer_encoding?
snprintf(content_len, sizeof(content_len), "Content-Length: %zu\r\n",
content.size()):
0
};
const auto user_headers_bufsize
return fmt::sprintf
{
printed_size(headers)
out, "Content-Type: %s", content_type?: "text/plain; charset=utf-8"
};
});
char user_headers[user_headers_bufsize]; const auto user_headers_len
if(code != NO_CONTENT && !has_transfer_encoding)
writeline(out, [&content_length](const mutable_buffer &out) -> size_t
{
print(user_headers, sizeof(user_headers), headers)
};
const ilist<const_buffer> iov
return fmt::sprintf
{
{ status_line, size_t(status_line_len) },
{ server_line, size_t(server_line_len) },
{ date_line, size_t(date_line_len) },
{ cache_line, size_t(cache_line_len) },
{ user_headers, size_t(user_headers_len) },
{ content_len, size_t(content_len_len) },
{ "\r\n", 2 },
{ content.data(), content.size() },
out, "Content-Length: %zu", content_length
};
});
closure(iov);
for(const auto &header : headers)
{
assert(!header.first.empty());
assert(!header.second.empty());
writeline(out, [&header](const mutable_buffer &out) -> size_t
{
return fmt::sprintf
{
out, "%s: %s", header.first, header.second
};
});
}
if(termination)
writeline(out);
}
ircd::http::response::chunked::chunked(const code &code,
@ -491,10 +484,14 @@ ircd::http::response::chunked::chunked(const code &code,
std::copy(begin(user_headers), end(user_headers), headers + 1);
//TODO: bitrot
assert(0);
/*
response
{
code, {}, closure, { headers, headers + num_headers }
};
*/
}
ircd::http::response::chunked::~chunked()
@ -849,13 +846,53 @@ ircd::http::parser::content_length(const string_view &str)
return ret;
}
/// Close over the user's closure to append a newline.
void
ircd::http::writeline(stream_buffer &write,
const stream_buffer::closure &closure)
{
// A new stream_buffer is implicit constructed out of the mutable_buffer
// otherwise presented to this closure as its write window.
write([&closure](stream_buffer write)
{
const auto newline{[](const mutable_buffer &out)
{
return copy(out, "\r\n"_sv);
}};
write(closure);
write(newline);
return write.consumed();
});
}
void
ircd::http::writeline(stream_buffer &write)
{
writeline(write, [](const mutable_buffer &out)
{
return 0;
});
}
size_t
ircd::http::serialized(const vector_view<const line::header> &headers)
{
return std::accumulate(std::begin(headers), std::end(headers), size_t{0}, []
(auto &ret, const auto &pair)
{
// key : SP value CRLF
return ret += pair.first.size() + 1 + 1 + pair.second.size() + 2;
});
}
ircd::http::error::error(const enum code &code,
std::string content)
:ircd::error{generate_skip}
,code{code}
,content{std::move(content)}
{
snprintf(buf, sizeof(buf), "%d %s", int(code), status(code).data());
snprintf(buf, sizeof(buf), "%d %s", int(code), status(code).c_str());
}
ircd::http::code

25
ircd/m/io.cc
View file

@ -598,11 +598,10 @@ const
std::min(addl_headers.size(), size_t(64UL))
};
size_t headers{2 + addl_headers_size};
http::line::header header[headers + 1]
size_t headers{1};
http::line::header header[headers + addl_headers_size]
{
{ "User-Agent", BRANDING_NAME " (IRCd " BRANDING_VERSION ")" },
{ "Content-Type", "application/json" },
};
for(size_t i(0); i < addl_headers_size; ++i)
@ -615,16 +614,32 @@ const
"Authorization", generate_authorization(x_matrix)
};
static const auto content_type
{
"application/json; charset=utf-8"
};
const unique_buffer<mutable_buffer> head_buf{8192};
stream_buffer head{head_buf};
http::request
{
head,
destination,
method,
path,
query,
content,
write_closure(server),
content.size(),
content_type,
{ header, headers }
};
const ilist<const_buffer> vector
{
head.completed(),
content
};
write_closure(server)(vector);
}
namespace ircd::m::name

24
ircd/resource.cc
View file

@ -496,7 +496,7 @@ ircd::resource::response::response(client &client,
}
ircd::resource::response::response(client &client,
const string_view &str,
const string_view &content,
const string_view &content_type,
const http::code &code)
{
@ -507,20 +507,32 @@ ircd::resource::response::response(client &client,
char rtime[64]; const auto rtime_len
{
snprintf(rtime, sizeof(rtime), "%zdus",
request_time)
snprintf(rtime, sizeof(rtime), "%zdus", request_time)
};
char head_buf[2048];
stream_buffer head{head_buf};
http::response
{
code, str, write_closure(client),
head,
code,
content.size(),
content_type,
string_view{}, // cache_control
{
{ "Content-Type", content_type },
{ "Access-Control-Allow-Origin", "*" }, //TODO: XXX
{ "X-IRCd-Request-Timer", string_view{rtime, size_t(rtime_len)} }
}
};
const ilist<const_buffer> vector
{
head.completed(),
content
};
write_closure(client)(vector);
log::debug("client[%s] HTTP %d %s in %ld$us; response in %ld$us (%s) content-length: %zu",
string(remote(client)),
int(code),
@ -528,5 +540,5 @@ ircd::resource::response::response(client &client,
request_time,
(client.request_timer.at<microseconds>().count() - request_time),
content_type,
str.size());
content.size());
}