acl/app/wizard_demo/httpd_proxy/http_transfer.cpp

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#include "stdafx.h"
#include "http_transfer.h"
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http_transfer::http_transfer(acl::http_method_t method, request_t* req,
response_t* res, int port)
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: port_(port)
, method_(method)
, req_(req)
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, res_(res)
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, client_(NULL)
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{
box_ = new acl::fiber_tbox<bool>;
acl::socket_stream& sin = req_->getSocketStream();
req_in_.open(sin.sock_handle());
acl::socket_stream& sout = res_->getSocketStream();
res_out_.open(sout.sock_handle());
res_client_ = res_->getClient();
}
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http_transfer::~http_transfer(void) {
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req_in_.unbind_sock();
res_out_.unbind_sock();
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delete client_;
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delete box_;
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}
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void http_transfer::wait(bool* keep_alive) {
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bool* res = box_->pop();
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assert(res);
*keep_alive = *res;
delete res;
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}
void http_transfer::run(void) {
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bool* res = new bool;
switch (method_) {
case acl::HTTP_METHOD_GET:
*res = transfer_get();
break;
case acl::HTTP_METHOD_POST:
*res = transfer_post();
break;
default:
logger_error("not support method: %d", (int) method_);
*res = false;
break;
}
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box_->push(res);
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}
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bool http_transfer::open_peer(request_t* req, acl::socket_stream* conn)
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{
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const char* host = req->getRemoteHost();
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if (host == NULL || *host == 0) {
logger_error("no Host in request head");
return false;
}
acl::string buf(host);
char* ptr = strrchr(buf.c_str(), ':');
if (ptr != NULL && *(ptr + 1) != 0) {
*ptr++ = 0;
int port = atoi(ptr);
if (port > 0 && port < 65535) {
port_ = port;
}
}
acl::string addr;
addr.format("%s|%d", buf.c_str(), port_);
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if (!conn->open(addr, 0, 0)) {
logger_error("connect %s error %s",
addr.c_str(), acl::last_serror());
return false;
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}
logger("connect %s ok", addr.c_str());
bool is_request = true, unzip = false, fixed_stream = true;
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client_ = new acl::http_client(conn, is_request, unzip, fixed_stream);
return true;
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}
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bool http_transfer::transfer_request_head(acl::socket_stream* conn) {
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acl::string header;
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req_->sprint_header(header, NULL);
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if (header.empty()) {
logger_error("http request head empty");
return false;
}
header += "\r\n";
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if (conn->write(header) == -1) {
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logger_error("write request header error");
return false;
}
printf(">>>send head: [%s]\r\n", header.c_str());
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return true;
}
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bool http_transfer::transfer_request_body(acl::socket_stream* conn) {
long long length = req_->getContentLength();
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if (length <= 0) {
return true;
}
long long n = 0;
char buf[8192];
while (n < length) {
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int ret = req_in_.read(buf, sizeof(buf), false);
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if (ret == -1) {
logger_error("read request body error");
return false;
}
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if (conn->write(buf, ret) == -1) {
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logger_error("send request body error");
return false;
}
n += ret;
}
return true;
}
bool http_transfer::transfer_get(void) {
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if (!open_peer(req_, &conn_)) {
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logger_error("open server error");
return false;
}
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if (!transfer_request_head(&conn_)) {
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logger_error("transfer_request_head error");
return false;
} else {
return transfer_response();
}
}
bool http_transfer::transfer_post(void) {
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if (!open_peer(req_, &conn_)) {
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logger_error("open server error");
return false;
}
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if (!transfer_request_head(&conn_)) {
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logger_error("transfer_request_head error");
return false;
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} else if (!transfer_request_body(&conn_)) {
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logger_error("transfer_request_body error");
return false;
} else {
return transfer_response();
}
}
bool http_transfer::transfer_response(void) {
assert(client_);
if (!client_->read_head()) {
logger_error("read response head error");
return false;
}
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bool keep_alive = false; // xxxx
client_->header_update("Connection", "Close");
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acl::string header;
client_->sprint_header(header, NULL);
if (header.empty()) {
logger_error("response header empty");
return false;
}
header += "\r\n";
printf("response head:\r\n[%s]\r\n", header.c_str());
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//acl::ostream* out = &res_->getOutputStream();
if (res_out_.write(header) == -1) {
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logger_error("send response head error");
return false;
}
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//acl::http_client* out_client = res_->getClient();
//assert(out_client);
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long long length = client_->body_length();
if (length == 0) {
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return client_->is_server_keep_alive() && keep_alive;
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}
HTTP_HDR_RES* hdr_res = client_->get_respond_head(NULL);
assert(hdr_res);
bool chunked = hdr_res->hdr.chunked ? true : false;
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char buf[8192];
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while (true) {
int ret = client_->read_body(buf, sizeof(buf));
if (ret <= 0) {
break;
} else if (chunked) {
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if (!res_client_->write_chunk(res_out_, buf, ret)) {
logger_error("send response body error");
return false;
}
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} else if (res_out_.write(buf, ret) == -1) {
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logger_error("send response body error");
return false;
}
}
if (chunked) {
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if (!res_client_->write_chunk_trailer(res_out_)) {
logger_error("write chunked trailer error");
return false;
}
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}
return client_->is_server_keep_alive() && false;
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}