### Perform HTTP GET Request

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Example of initializing a request and executing a GET call with the updated API.

```text
let mut req = ScReq::new();
let url = "https://www.baidu.com/";
let resp = req.get(url, None).unwrap();   // None = no extra headers/options
println!("{}", resp.header());
```

--------------------------------

### Perform a GET Request

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Execute a GET request and access the response headers, body, and JSON content.

```rust
use reqrio::*;

fn main() {
    let mut req = ScReq::new();
    let mut res = req.get("https://www.baidu.com", None).unwrap();
    let header = res.header();
    let body = res.decode_body().unwrap();
    let json = res.json().unwrap();
}
```

--------------------------------

### Get and set JSON values by XPath

Source: https://github.com/xllgl2017/reqrio/blob/main/json/README.md

Shows how to modify and retrieve nested JSON values using XPath-like syntax.

```rust
fn get_set_value(){
    let mut data=json::object!{"code": 0, "msg": "success", "data":[{"entityId": 1116288, "skuBatchProperty": 2}]};
    data.set_value_by_xpath(".data.[0].entityId", 123).unwrap();
    data.get_value_by_xpath(".data.[1].skuBatchProperty").unwrap();
}
```

--------------------------------

### Initialize a Session

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Create and configure a new ScReq session with custom headers, ALPN, and timeouts.

```rust
use reqrio::*;

fn main() {
    let headers = json::object! {
        "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
        "Accept-Encoding": "gzip, deflate, br, zstd",
        "Accept-Language": "zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6",
        "Cache-Control": "no-cache",
        "Connection": "keep-alive",
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0",
        "sec-ch-ua": r#""Microsoft Edge";v="143", "Chromium";v="143", "Not A(Brand";v="24""#,
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": r#""Windows""#
    };

    let mut req = ScReq::new()
        .with_alpn(ALPN::Http20)
        .with_header_json(headers).unwrap()
        .with_timeout(Timeout::new_same(3000, 3));
}
```

--------------------------------

### Open and interact with a WebSocket

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Demonstrates establishing a connection to a WebSocket server, sending a text frame, and reading the response.

```rust
use reqrio::*;

fn main() {
    let mut ws = WebSocket::open("wss://echo.websocket.org").unwrap();
    ws.write_frame(WsFrame::new_text(true, "Hello")).unwrap();
    let frame = ws.read_frame().unwrap();
    println!("Received: {:?}", frame);
}
```

--------------------------------

### Issue a Certificate in Rust

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Shows how to configure a root signer, set subject details, add extensions, and sign a certificate.

```rust
fn dd() {
    let mut ca_signer = CertSigner::root_siger(2048).unwrap();
    ca_signer.set_expire(10).unwrap();
    //Country code, only two characters
    ca_signer.add_subject(DnType::Country, "XX").unwrap();
    ca_signer.add_subject(DnType::StateOrProvince, "XXX").unwrap();
    ca_signer.add_subject(DnType::Locality, "XXX").unwrap();
    ca_signer.add_subject(DnType::Organization, "XXX").unwrap();
    ca_signer.add_subject(DnType::OrganizationalUnit, "XXX").unwrap();
    ca_signer.add_subject(DnType::Common, "XXX").unwrap();
    //Certificate Purpose
    ca_signer.add_extension(CertExtend::KeyUsage(vec![KeyUsage::Critical, KeyUsage::KeyCertSign, KeyUsage::CrlSign])).unwrap();
    ca_signer.add_extension(CertExtend::KeyIdentifier(vec![KeyIdentifier::Hash])).unwrap();
    ca_signer.add_extension(CertExtend::BasicConstraints(vec![BasicConstraint::Critical, BasicConstraint::Ca(true)])).unwrap();
    ca_signer.sign_by_self().unwrap();
    fs::write("ca.der", ca_signer.cert.as_der().as_slice()).unwrap();
}
```

--------------------------------

### Create JSON objects and arrays

Source: https://github.com/xllgl2017/reqrio/blob/main/json/README.md

Demonstrates the initialization of JSON objects and arrays using the object! and array! macros.

```rust
fn main() {
    let object = object! {
        "foo": 42,
        "bar": false,
    };
    let array = array![
        {
            "foo": 42,
            "bar": fase
        }
    ];
}
```

--------------------------------

### Read and Write Certificates in Rust

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Demonstrates loading certificate chains and private keys from PEM files and writing them to DER format.

```rust
use std::fs;

fn dd() {
    //Read certificate chain
    let certificates = Certificate::from_pem_file(pem)?;
    //Read certificate private key
    let certificate_key = RsaKey::from_pri_pem_file(key)?;
    //Certificate writing
    fs::write("1.der", certificates[0].as_der().as_slice()).unwrap();
}
```

--------------------------------

### RSA Key Generation and Encryption in Rust

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Demonstrates generating RSA keys, exporting to PEM/DER, and performing encryption/decryption operations.

```rust
fn dd() {
    let key = RsaKey::gen_new_key(2048).unwrap();
    println!("{}", key.to_pri_pem().unwrap());
    println!("{}", key.to_pub_pem().unwrap());
    println!("{:?}", key.to_pri_der());
    println!("{:?}", key.to_pub_der());
    let nkey = RsaKey::from_pub_der(key.to_pub_der()).unwrap();
    let rsa = RsaCipher::from_key(nkey).unwrap();
    let encrypted = rsa.encrypt("adsdfds", true).unwrap();
    println!("{} {:?}", encrypted.len(), encrypted);

    let nkey = RsaKey::from_pri_der(key.to_pri_der()).unwrap();
    let rsa = RsaCipher::from_key(nkey).unwrap();
    let decrypted = rsa.decrypt(encrypted.as_slice(), true).unwrap();
    println!("{} {:?}", decrypted.len(), decrypted);
}
```

--------------------------------

### Configure Custom ClientHello

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Construct a custom TLS fingerprint from a decoded hex ClientHello string.

```rust
let client_hello = hex_decode(fingerprint["tls_finger"].to_string()) ?;
req.set_fingerprint(Fingerprint::from_client_hello(client_hello, "<token>")) ?;
```

--------------------------------

### Update Request Interface Usage

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Demonstrates the migration from the v0.2.0 request pattern to the simplified v0.3.0 interface.

```text
// Before (v0.2.0)
// let req = ScReq::new();
// req.set_url(url).unwrap();
// let resp=req.get().unwrap();

// After (v0.3.0)
let mut req = ScReq::new();
let resp = req.get(url, None)?;   // 2nd arg = optional headers/options (None to skip)
```

--------------------------------

### Hashing and HMAC Usage in Rust

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Shows how to use the Hasher API for MD5 and HMAC operations.

```rust
fn dd() {
    let mut hasher = Hasher::new(HashType::MD5).unwrap();
    hasher.update("dfsdf").unwrap();
    let md5 = hasher.finalize().unwrap();

    let md5 = hash::md5("dfsdf").unwrap();
    let md5_hex = hash::md5_hex("sdsdf").unwrap();

    let mut hmac = Hmac::new("key", HashType::Sha256).unwrap();
    hmac.update("fs").unwrap();
    let bs = hmac.finalize().unwrap();
}
```

--------------------------------

### Build record message

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Constructs a record message for transmission.

```text
Connection::make_message(RecordType, out, int)
```

--------------------------------

### Perform Cipher Encryption and Decryption in Rust

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Illustrates DES CBC encryption/decryption and convenient AES-based base64 encoding.

```rust
fn dd() {
    let mut aes = Cipher::des_cbc();
    aes.set_secret_key("12345678", Some("12345678"));
    let encrypted = aes.encrypt("1234567812345678jhjfhhhhhhhhhhhhhhdhhhhhhhgfdsfdsefdutrythdyrfgytyth8").unwrap();
    println!("{:?}", encrypted);
    let b64 = base64::b64encode(encrypted).unwrap();
    println!("encrypted: {}", b64);

    let de_bs = base64::b64decode(b64).unwrap();
    println!("decrypted: {:?}", de_bs);
    println!("{:?}", aes.decrypt(de_bs).unwrap());

    //Convenient AES based 64 encryption
    let res = cipher::en_b64(CipherType::AES_128_CBC, "1234567812345678", Some("1234567812345678"), "dada");
}
```

--------------------------------

### Perform a POST Request with a Serialize Struct

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Send a serialized struct as a JSON body in a POST request, requiring the serde feature.

```rust
use reqrio::*;
use serde::Serialize;

fn main() {
    #[derive(Serialize)]
    struct Data {
        field1: String,
        field2: bool,
    }

    let mut req = ScReq::new();
    let url = "https://www.baidu.com/api";
    let resp = req.post(url, Body::json(&Data { field1: "value".to_string(), field2: false }).unwrap()).unwrap();
}
```

--------------------------------

### Configure Custom HTTP/2 Fingerprint

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Sets custom HTTP/2 parameters including settings, window size, and priority to control connection scheduling.

```text
let h2 = H2Finger {
    setting: vec![
        H2Setting::EnablePush(0),               // 0 = disable server push
        H2Setting::HeaderTableSize(4096),
        H2Setting::InitialWindowSize(8192),
        H2Setting::MaxHeaderListSize(242144),
    ],
    window_size: 2147418112,
    weight: 234,        // priority weight
    priority: true,     // enable priority
};
```

--------------------------------

### Perform a Form POST Request

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Send form-encoded data via a POST request.

```rust
use reqrio::*;

fn main() {
    let mut req = ScReq::new();
    let url = "https://www.baidu.com/api";
    let data = json::object! {
        "field1": "value1",
        "field2": "value2"
    };
    let resp = req.post(url, data.form()).unwrap();
}
```

--------------------------------

### Configure mTLS Client in Rust

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Enable mutual TLS by providing client certificate and private key paths to the ScReq instance.

```rust
 use reqrio::*;
 
 let mut req=ScReq::new();
 let certs=Certificate::from_pem_file("path/to/cert").unwrap();
 let key=RsaKey::from_pri_pem_file("path/to/cert/key").unwrap();
 req.set_mtls(certs,key);
```

--------------------------------

### Generate communication keys

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Generates keys after the client exchange key phase.

```text
Connection::make_cipher(bool)
```

--------------------------------

### Perform a JSON POST Request

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Send JSON data via a POST request.

```rust
use reqrio::*;

fn main() {
    let mut req = ScReq::new();
    let url = "https://www.baidu.com/api";
    let data = json::object! {
        "field1": "value1",
        "field2": "value2"
    };
    let resp = req.post(url, data).unwrap();
}
```

--------------------------------

### mTLS Configuration

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Configuring mutual TLS (mTLS) for the client by providing a certificate and private key.

```APIDOC
## mTLS Configuration

### Description
Enables mutual TLS (mTLS) on the client side by configuring a client certificate and private key through `ClientConfig`.

### Example
```rust
use reqrio::*;

let mut req = ScReq::new();
let certs = Certificate::from_pem_file("path/to/cert").unwrap();
let key = RsaKey::from_pri_pem_file("path/to/cert/key").unwrap();
req.set_mtls(certs, key);
```
```

--------------------------------

### Set TLS Fingerprints

Source: https://github.com/xllgl2017/reqrio/blob/main/reqrio/README.md

Apply JA3 or JA4 fingerprints to a request using a token.

```rust
req.set_ja3("<ja3>", "<token>");
req.set_ja4("<ja4>", "<token>");
```

--------------------------------

### Reqrio C Export Functions

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

A comprehensive list of C export functions available in Reqrio for handling HTTP requests and WebSocket communication.

```APIDOC
## Reqrio C Export Functions

### Description
Reqrio provides a set of C export functions that can be invoked from various programming languages to perform HTTP and WebSocket operations. Users must manually manage instances to avoid memory leaks.

### Functions
- **ScReq_new**() -> void *
- **ScReq_set_header_json**(void *, const char *) -> int
- **ScReq_add_header**(void *, const char *, const char *) -> int
- **ScReq_set_alpn**(void *, const char *) -> int
- **ScReq_set_random_fingerprint**(void *) -> int
- **ScReq_set_fingerprint**(void *, const char *) -> int
- **ScReq_set_ja3**(void *, const char *) -> int
- **ScReq_set_ja4**(void *, const char *) -> int
- **ScReq_set_proxy**(void *, const char *) -> int
- **ScReq_set_url**(void *, const char *) -> int
- **ScReq_add_param**(void *, const char *, const char *) -> int
- **ScReq_set_data**(void *, const char *) -> int
- **ScReq_set_json**(void *, const char *) -> int
- **ScReq_set_bytes**(void *, const char *, uint32_t) -> int
- **ScReq_set_text**(void *, const char *) -> int
- **ScReq_set_timeout**(void *, const char *) -> int
- **ScReq_set_cookie**(void *, const char *) -> int
- **ScReq_add_cookie**(void *, const char *, const char *) -> int
- **ScReq_set_callback**(void *, extern "C" fn(const char *, uint32_t)) -> int
- **ScReq_reconnect**(void *) -> int
- **ScReq_stream_io**(void *, Method) -> char *
- **ScReq_drop**(void *) -> -
- **char_free**(char *) -> -
- **ws_build**() -> void *
- **ws_add_header**(void *, const char *, const char *) -> int
- **ws_set_proxy**(void *, const char *) -> int
- **ws_set_url**(void *, const char *) -> int
- **ws_set_uri**(void *, const char *) -> int
- **ws_open**(void *) -> void *
- **ws_open_raw**(const char *, const char *) -> void *
- **ws_read**(void *) -> char *
- **ws_write**(void *, int, bool, const char *) -> int
- **ws_close**(void *) -> -

### Notes
- Functions return -1 if unavailable.
- Instances must be manually released to prevent memory leaks.
```

--------------------------------

### Exported Functions

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Reference for the exported C-style functions for cryptographic operations.

```APIDOC
## Exported Functions

### Cipher Operations
- **Cipher_new** (CipherType) -> void *
- **Cipher_set_secret_key** (void *, const uint8_t *, size_t, const uint8_t *, size_t) -> int
- **Cipher_encrypt** (void *, const uint8_t *, size_t, uint8_t **, size_t) -> int
- **Cipher_decrypt** (void *, const uint8_t *, size_t, uint8_t **, size_t) -> int
- **Cipher_free** (void *) -> void

### Hasher Operations
- **Hasher_new** (HashType) -> void *
- **Hasher_update** (void *, const uint8_t *, size_t) -> int
- **Hasher_finalize** (void *, uint8_t **, size_t) -> int
- **Hasher_free** (void *) -> void

### HMAC Operations
- **Hmac_new** (uint8_t **, size_t, HashType) -> void *
- **Hmac_update** (void *, const uint8_t *, size_t) -> int
- **Hmac_finalize** (void *, uint8_t **, size_t) -> int
- **Hmac_free** (void *) -> void

### Encoding/Decoding
- **Base64_new** () -> void *
- **Base64_encode** (void *, const uint8_t *, size_t) -> char *
- **Base64_decode** (void *, const uint8_t *, size_t, uint8_t **, size_t) -> int
- **Base64_free** (void *) -> void
- **url_encode** (const char *) -> char *
- **url_decode** (const char *) -> char *
- **hex_encode** (const unt8_t, size_t) -> char *
- **hex_decode** (const char *, uint8_t **, size_t) -> int
```

--------------------------------

### Configure Custom TLS Fingerprint

Source: https://github.com/xllgl2017/reqrio/blob/main/CHANGELOG.md

Defines a custom TLS fingerprint by specifying cipher suites and extensions to simulate specific browser behavior.

```text
let finger = TlsFinger::Custom {
    suites: vec![
        CipherSuite::TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256.into(),
        CipherSuite::TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384.into(),
        CipherSuite::TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256.into(),
        CipherSuite::TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA.into(),
        CipherSuite::TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA.into(),
        CipherSuite::TLS_AES_128_GCM_SHA256.into(),
        CipherSuite::TLS_AES_256_GCM_SHA384.into(),
        CipherSuite::TLS_CHACHA20_POLY1305_SHA256.into(),
    ],
    extensions: vec![
        ExtensionType::StatusRequest.into(),
        Extension::new(ExtensionType::SupportedGroup, ExtensionValue::Curves(vec![
            NamedCurve::X25519.into(),
            NamedCurve::SecP256r1.into(),
            NamedCurve::SecP384r1.into(),
            NamedCurve::SecP521r1.into(),
        ]))
    ]
}
```

--------------------------------

### Read record message

Source: https://github.com/xllgl2017/reqrio/blob/main/reqtls/README.md

Reads a record message from the connection.

```text
Connection::read_message(int,out)
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.