| #pragma once
|
|
|
| #include "common.h"
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| #include "http.h"
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|
|
| #include <string>
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| #include <unordered_set>
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| #include <list>
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| #include <map>
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| #include <algorithm>
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| #include <cctype>
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|
|
| #include "server-http.h"
|
|
|
| static std::string proxy_header_to_lower(std::string header) {
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| std::transform(header.begin(), header.end(), header.begin(), [](unsigned char c) {
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| return std::tolower(c);
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| });
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| return header;
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| }
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|
|
| static server_http_res_ptr proxy_request(const server_http_req & req, std::string method) {
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| std::string target_url = req.get_param("url");
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| common_http_url parsed_url = common_http_parse_url(target_url);
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|
|
| if (parsed_url.host.empty()) {
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| throw std::runtime_error("invalid target URL: missing host");
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| }
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|
|
| if (parsed_url.path.empty()) {
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| parsed_url.path = "/";
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| }
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|
|
| if (!parsed_url.password.empty()) {
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| throw std::runtime_error("authentication in target URL is not supported");
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| }
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|
|
| if (parsed_url.scheme != "http" && parsed_url.scheme != "https") {
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| throw std::runtime_error("unsupported URL scheme in target URL: " + parsed_url.scheme);
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| }
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|
|
| SRV_INF("proxying %s request to %s://%s:%i%s\n", method.c_str(), parsed_url.scheme.c_str(), parsed_url.host.c_str(), parsed_url.port, parsed_url.path.c_str());
|
|
|
| std::map<std::string, std::string> headers;
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| const std::string proxy_header_prefix = "x-llama-server-proxy-header-";
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| for (auto [key, value] : req.headers) {
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| const std::string lowered_key = proxy_header_to_lower(key);
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| if (!string_starts_with(lowered_key, proxy_header_prefix)) {
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| continue;
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| }
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|
|
| auto new_key = key.substr(proxy_header_prefix.size());
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| if (new_key.empty()) {
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| continue;
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| }
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|
|
| headers[new_key] = value;
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| }
|
|
|
| auto proxy = std::make_unique<server_http_proxy>(
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| method,
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| parsed_url.scheme,
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| parsed_url.host,
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| parsed_url.port,
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| parsed_url.path,
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| headers,
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| req.body,
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| req.files,
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| req.should_stop,
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| 600,
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| 600
|
| );
|
|
|
| return proxy;
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| }
|
|
|
| static server_http_context::handler_t proxy_handler_post = [](const server_http_req & req) -> server_http_res_ptr {
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| return proxy_request(req, "POST");
|
| };
|
|
|
| static server_http_context::handler_t proxy_handler_get = [](const server_http_req & req) -> server_http_res_ptr {
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| return proxy_request(req, "GET");
|
| };
|
|
|
