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Commite653e47

Browse files
carundeanberris
authored andcommitted
example: send response content-length as part of http header from server to client (issue#681)
1 parenta809089 commite653e47

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3 files changed

+23
-10
lines changed

3 files changed

+23
-10
lines changed

‎libs/network/example/http/async_server_file_upload.cpp

Lines changed: 12 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -191,6 +191,7 @@ struct connection_handler {
191191
voidoperator()(server::requestconst& req,const server::connection_ptr& conn) {
192192
static std::map<std::string, std::string> headers = {
193193
{"Connection","close"},
194+
{"Content-Length","0"},
194195
{"Content-Type","text/plain"}
195196
};
196197

@@ -206,24 +207,29 @@ struct connection_handler {
206207
// Wait until the data transfer is done by the IO threads
207208
uploader->wait_for_completion();
208209

209-
// Respond to the client
210-
conn->set_status(server::connection::ok);
211-
conn->set_headers(headers);
212210
auto end =std::chrono::high_resolution_clock::now();
213211
std::chrono::duration<double, std::milli> diff = end - start;
214212
std::ostringstream stm;
215213
stm <<"Took" << diff.count() <<" milliseconds for the transfer." << std::endl;
216-
conn->write(stm.str());
214+
auto body = stm.str();
215+
// Respond to the client
216+
headers["Content-Length"] =std::to_string(body.size());
217+
conn->set_status(server::connection::ok);
218+
conn->set_headers(headers);
219+
conn->write(body);
217220
}catch (const file_uploader_exception& e) {
221+
const std::string err = e.what();
222+
headers["Content-Length"] =std::to_string(err.size());
218223
conn->set_status(server::connection::bad_request);
219224
conn->set_headers(headers);
220-
const std::string err = e.what();
221225
conn->write(err);
222226
}
223227
}else {
228+
static std::stringbody("Only path allowed is /upload");
229+
headers["Content-Length"] =std::to_string(body.size());
224230
conn->set_status(server::connection::bad_request);
225231
conn->set_headers(headers);
226-
conn->write("Only path allowed is /upload.");
232+
conn->write(body);
227233
}
228234
}
229235
};

‎libs/network/example/http/hello_world_async_server_with_work_queue.cpp

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -125,13 +125,16 @@ void process_request(work_queue& queue) {
125125
// some heavy work!
126126
std::this_thread::sleep_for(std::chrono::seconds(10));
127127

128-
std::map<std::string, std::string> headers = {
128+
static std::map<std::string, std::string> headers = {
129+
{"Content-Length","0"},
129130
{"Content-Type","text/plain"},
130131
};
131132

133+
std::stringbody("Hello, world!");
134+
headers["Content-Length"] =std::to_string(body.size());
132135
request->conn->set_status(server::connection::ok);
133136
request->conn->set_headers(headers);
134-
request->conn->write("Hello, world!");
137+
request->conn->write(body);
135138
}
136139

137140
std::this_thread::sleep_for(std::chrono::microseconds(1000));

‎libs/network/example/http/hello_world_server.cpp

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -30,13 +30,17 @@ struct hello_world {
3030
std::ostringstream data;
3131
data <<"Hello," << ip <<':' << port <<'!';
3232

33-
std::map<std::string, std::string> headers = {
33+
static std::map<std::string, std::string> headers = {
34+
{"Content-Length","0"},
3435
{"Content-Type","text/plain"},
3536
};
3637

38+
auto body = data.str();
39+
headers["Content-Length"] =std::to_string(body.size());
40+
3741
connection->set_status(server::connection::ok);
3842
connection->set_headers(headers);
39-
connection->write(data.str());
43+
connection->write(body);
4044
}
4145
};
4246

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