emsApplication/sdk/include/hv/HttpResponseWriter.h

101 lines
2.6 KiB
C++

#ifndef HV_HTTP_RESPONSE_WRITER_H_
#define HV_HTTP_RESPONSE_WRITER_H_
#include "Channel.h"
#include "HttpMessage.h"
namespace hv {
class HV_EXPORT HttpResponseWriter : public SocketChannel {
public:
HttpResponsePtr response;
enum State {
SEND_BEGIN = 0,
SEND_HEADER,
SEND_BODY,
SEND_CHUNKED,
SEND_CHUNKED_END,
SEND_END,
} state: 8, end: 8;
HttpResponseWriter(hio_t* io, const HttpResponsePtr& resp)
: SocketChannel(io)
, response(resp)
, state(SEND_BEGIN)
, end(SEND_BEGIN)
{}
~HttpResponseWriter() {}
// Begin -> End
// Begin -> WriteResponse -> End
// Begin -> WriteStatus -> WriteHeader -> WriteBody -> End
// Begin -> EndHeaders("Content-Type", "text/event-stream") -> write -> write -> ... -> close
// Begin -> EndHeaders("Content-Length", content_length) -> WriteBody -> WriteBody -> ... -> End
// Begin -> EndHeaders("Transfer-Encoding", "chunked") -> WriteChunked -> WriteChunked -> ... -> End
int Begin() {
state = end = SEND_BEGIN;
return 0;
}
int WriteStatus(http_status status_codes) {
response->status_code = status_codes;
return 0;
}
int WriteHeader(const char* key, const char* value) {
response->SetHeader(key, value);
return 0;
}
template<typename T>
int WriteHeader(const char* key, T num) {
response->SetHeader(key, hv::to_string(num));
return 0;
}
int WriteCookie(const HttpCookie& cookie) {
response->cookies.push_back(cookie);
return 0;
}
int EndHeaders(const char* key = NULL, const char* value = NULL);
template<typename T>
int EndHeaders(const char* key, T num) {
std::string value = hv::to_string(num);
return EndHeaders(key, value.c_str());
}
int WriteChunked(const char* buf, int len = -1);
int WriteChunked(const std::string& str) {
return WriteChunked(str.c_str(), str.size());
}
int EndChunked() {
return WriteChunked(NULL, 0);
}
int WriteBody(const char* buf, int len = -1);
int WriteBody(const std::string& str) {
return WriteBody(str.c_str(), str.size());
}
int WriteResponse(HttpResponse* resp);
int SSEvent(const std::string& data, const char* event = "message");
int End(const char* buf = NULL, int len = -1);
int End(const std::string& str) {
return End(str.c_str(), str.size());
}
};
}
typedef std::shared_ptr<hv::HttpResponseWriter> HttpResponseWriterPtr;
#endif // HV_HTTP_RESPONSE_WRITER_H_