Allow custom header injection for HTTP requests

[dotandev]

Developers running behind enterprise proxies or custom firewalls need a way to pass arbitrary authorization headers via the SDK client.

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This issue has been added to the Stellar Wave Program and is worth 200 Points.

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[Sadeequ]

@Sadeequ has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

i am still here help me get some points man, wave is ending soon.

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Congratulations, @Sadeequ! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Sadeequ: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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