1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#include "common.hh"
#include "http_protocol.hh"
#include "logger.hh"
#include "strutil.hh"
#include "transport_base.hh"
#include "transport_http.hh"
namespace {
class HttpTransport : public TransportBase {
public:
HttpTransport(std::shared_ptr<Logger> logger,
std::shared_ptr<Looper> looper,
std::shared_ptr<TaskRunner> runner,
Transport::Handler* handler)
: TransportBase(logger, looper, runner, handler) {
}
bool setup(Logger* logger, Config const* config) override {
if (!TransportBase::setup(logger, config))
return false;
extra_.resize(clients());
return true;
}
bool client_handle(Client* client) override {
auto& extra = extra_[client->index_];
auto req = HttpRequest::parse(client->in_.get());
if (!req) {
client->expect_in_ = 1; // Don't know how big the request will be
if (client->in_closed_ || extra.close_connection_) {
if (client->out_->empty()) {
client_abort(client);
return false;
}
// Wait for output to be sent (or timeout, whichever is first).
}
return true;
}
if (req->good()) {
if (supported_request(req.get())) {
extra.close_connection_ = close_connection(req.get());
extra.version_ = req->proto_version();
// Stop reading in_ buffer until request is handled.
client->expect_in_ = 0;
return TransportBase::client_request(
client, 0, std::make_unique<WrapRequest>(std::move(req)));
} else {
return client_fatal_response(client, 505);
}
} else {
return client_fatal_response(client, 400);
}
}
static bool supported_request(HttpRequest const* request) {
if (request->proto() != "HTTP")
return false;
auto version = request->proto_version();
return version.major == 1;
}
static bool close_connection(HttpRequest const* request) {
if (request->proto_version().major == 1 &&
request->proto_version().minor == 1) {
return request->first_header("connection") == "close";
}
return true;
}
void client_new(Client* client) override {
TransportBase::client_new(client);
auto& extra = extra_[client->index_];
extra.close_connection_ = true;
extra.version_.major = 1;
extra.version_.minor = 0;
}
bool client_fatal_response(Client* client, uint16_t status_code) {
auto& extra = extra_[client->index_];
extra.close_connection_ = true;
client->expect_in_ = 0;
client->in_->clear();
return client_response(client, 0, create_data(status_code, ""));
}
bool client_response_header(Client* client, uint32_t id) override {
auto& extra = extra_[client->index_];
assert(client->responses_.count(id));
auto& cli_response = client->responses_[id];
auto status_code = cli_response.response_->code();
auto builder = HttpResponseBuilder::create(
"HTTP", extra.version_,
status_code,
std::string(http_standard_message(status_code)));
bool have_content_length = false;
for (auto const& pair : cli_response.response_->headers()) {
if (!have_content_length && pair.first == "Content-Length")
have_content_length = true;
builder->add_header(pair.first, pair.second);
}
if (!have_content_length)
extra.close_connection_ = true;
if (extra.close_connection_)
builder->add_header("Connection", "close");
if (!builder->build(client->out_.get())) {
logger_->warn("Output buffer full for client: %zu", client->index_);
client_abort(client);
return false;
}
return client_flush(client);
}
bool client_response_footer(Client* client, uint32_t) override {
auto const& extra = extra_[client->index_];
if (extra.close_connection_ && client->out_->empty()) {
client_abort(client);
return false;
}
return true;
}
private:
class WrapRequest : public UrlRequest {
public:
explicit WrapRequest(std::unique_ptr<HttpRequest> req)
: req_(std::move(req)) {}
std::string_view method() const override {
return req_->method();
}
std::string_view url() const override {
return req_->url();
}
std::optional<std::string> header_one(
std::string_view name) const override {
auto it = req_->header(name);
if (it->valid())
return it->value();
return std::nullopt;
}
std::vector<std::string> header_all(
std::string_view name) const override {
std::vector<std::string> ret;
for (auto it = req_->header(name); it->valid(); it->next()) {
auto tmp = str::split(it->value(), ',');
for (auto str : tmp)
ret.push_back(std::string(str::trim(str)));
}
return ret;
}
private:
std::unique_ptr<HttpRequest> req_;
};
struct Extra {
bool close_connection_;
Version version_;
};
std::vector<Extra> extra_;
};
class HttpFactory : public Transport::Factory {
public:
std::unique_ptr<Transport> create(
std::shared_ptr<Logger> logger,
std::shared_ptr<Looper> looper,
std::shared_ptr<TaskRunner> runner,
Logger* config_logger,
Config const* config,
Transport::Handler* handler) {
auto transport = std::make_unique<HttpTransport>(
logger, looper, runner, handler);
if (transport->setup(config_logger, config))
return transport;
return nullptr;
}
};
} // namespace
std::unique_ptr<Transport::Factory> create_transport_factory_http() {
return std::make_unique<HttpFactory>();
}
|
