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#pragma once
//Role: base class for Client and Server
//provides shared functionality
#include <nall/http/request.hpp>
#include <nall/http/response.hpp>
namespace nall { namespace HTTP {
struct Role {
struct Settings {
int connectionLimit = 1 * 1024; //server
int headSizeLimit = 16 * 1024; //client, server
int bodySizeLimit = 8192 * 1024; //client, server
int chunkSize = 32 * 1024; //client, server
int threadStackSize = 128 * 1024; //server
int timeoutReceive = 15 * 1000; //server
int timeoutSend = 15 * 1000; //server
} settings;
inline auto configure(const string& parameters) -> bool;
inline auto download(int fd, Message& message) -> bool;
inline auto upload(int fd, const Message& message) -> bool;
};
auto Role::configure(const string& parameters) -> bool {
auto document = BML::unserialize(parameters);
for(auto parameter : document) {
auto name = parameter.name();
auto value = parameter.integer();
if(0);
else if(name == "connectionLimit") settings.connectionLimit = value;
else if(name == "headSizeLimit") settings.headSizeLimit = value;
else if(name == "bodySizeLimit") settings.bodySizeLimit = value;
else if(name == "chunkSize") settings.chunkSize = value;
else if(name == "threadStackSize") settings.threadStackSize = value;
else if(name == "timeoutReceive") settings.timeoutReceive = value;
else if(name == "timeoutSend") settings.timeoutSend = value;
}
return true;
}
auto Role::download(int fd, Message& message) -> bool {
auto& head = message._head;
auto& body = message._body;
string chunk;
uint8_t packet[settings.chunkSize], *p = nullptr;
head.reset(), head.reserve(4095);
body.reset(), body.reserve(4095);
bool headReceived = false;
bool chunked = false;
bool chunkReceived = false;
bool chunkFooterReceived = true;
int length = 0;
int chunkLength = 0;
int contentLength = 0;
while(true) {
if(auto limit = settings.headSizeLimit) if(head.size() >= limit) return false;
if(auto limit = settings.bodySizeLimit) if(body.size() >= limit) return false;
if(headReceived && !chunked && body.size() >= contentLength) {
body.resize(contentLength);
break;
}
if(length == 0) {
length = recv(fd, packet, settings.chunkSize, MSG_NOSIGNAL);
if(length <= 0) return false;
p = packet;
}
if(!headReceived) {
head.append((char)*p++);
--length;
if(head.endsWith("\r\n\r\n") || head.endsWith("\n\n")) {
headReceived = true;
if(!message.setHead()) return false;
chunked = message.header["Transfer-Encoding"].value().iequals("chunked");
contentLength = message.header["Content-Length"].value().natural();
}
continue;
}
if(chunked && !chunkReceived) {
char n = *p++;
--length;
if(!chunkFooterReceived) {
if(n == '\n') chunkFooterReceived = true;
continue;
}
chunk.append(n);
if(chunk.endsWith("\r\n") || chunk.endsWith("\n")) {
chunkReceived = true;
chunkLength = chunk.hex();
if(chunkLength == 0) break;
chunk.reset();
}
continue;
}
if(!chunked) {
body.resize(body.size() + length);
memory::copy(body.get() + body.size() - length, p, length);
p += length;
length = 0;
} else {
int transferLength = min(length, chunkLength);
body.resize(body.size() + transferLength);
memory::copy(body.get() + body.size() - transferLength, p, transferLength);
p += transferLength;
length -= transferLength;
chunkLength -= transferLength;
if(chunkLength == 0) {
chunkReceived = false;
chunkFooterReceived = false;
}
}
}
if(!message.setBody()) return false;
return true;
}
auto Role::upload(int fd, const Message& message) -> bool {
auto transfer = [&](const uint8_t* data, uint size) -> bool {
while(size) {
int length = send(fd, data, min(size, settings.chunkSize), MSG_NOSIGNAL);
if(length < 0) return false;
data += length;
size -= length;
}
return true;
};
if(message.head([&](const uint8_t* data, uint size) -> bool { return transfer(data, size); })) {
if(message.body([&](const uint8_t* data, uint size) -> bool { return transfer(data, size); })) {
return true;
}
}
return false;
}
}}
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